./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix001.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix001.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix001.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix001.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:59:09,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:59:09,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:59:09,266 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:59:09,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:59:09,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:59:09,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:59:09,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:59:09,285 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:59:09,285 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:59:09,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:59:09,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:59:09,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:59:09,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:59:09,287 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:59:09,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:59:09,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:59:09,287 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:59:09,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:59:09,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:59:09,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:59:09,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:59:09,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:59:09,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:59:09,289 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:59:09,290 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:59:09,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:59:09,290 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:59:09,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:59:09,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:59:09,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:59:09,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:59:09,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:59:09,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:59:09,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:59:09,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:59:09,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:59:09,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:59:09,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:59:09,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:59:09,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:59:09,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:59:09,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:59:09,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:59:09,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:59:09,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:59:09,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:59:09,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:59:09,449 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:59:09,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix001.opt.i [2024-05-12 12:59:10,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:59:10,648 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:59:10,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.opt.i [2024-05-12 12:59:10,660 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d4ff2d5/49cb1ae9e40a46e9aab7e8f25996d397/FLAG54d65643c [2024-05-12 12:59:10,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d4ff2d5/49cb1ae9e40a46e9aab7e8f25996d397 [2024-05-12 12:59:10,673 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:59:10,674 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:59:10,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix001.opt.yml/witness.yml [2024-05-12 12:59:10,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:59:10,827 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:59:10,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:59:10,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:59:10,842 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:59:10,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:59:10" (1/2) ... [2024-05-12 12:59:10,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110da5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:10, skipping insertion in model container [2024-05-12 12:59:10,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:59:10" (1/2) ... [2024-05-12 12:59:10,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b950102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:59:10, skipping insertion in model container [2024-05-12 12:59:10,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:59:10" (2/2) ... [2024-05-12 12:59:10,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110da5dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:10, skipping insertion in model container [2024-05-12 12:59:10,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:59:10" (2/2) ... [2024-05-12 12:59:10,848 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:59:10,998 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:59:10,999 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-05-12 12:59:11,000 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-05-12 12:59:11,000 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] (((((((((((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-05-12 12:59:11,000 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:59:11,000 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-05-12 12:59:11,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:59:11,205 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.opt.i[944,957] [2024-05-12 12:59:11,387 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:59:11,395 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 12:59:11,425 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix001.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:59:11,508 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:59:11,541 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:59:11,541 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11 WrapperNode [2024-05-12 12:59:11,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:59:11,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:59:11,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:59:11,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:59:11,548 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 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,562 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 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,602 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 157 [2024-05-12 12:59:11,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:59:11,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:59:11,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:59:11,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:59:11,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,649 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 12:59:11,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:59:11,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:59:11,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:59:11,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:59:11,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (1/1) ... [2024-05-12 12:59:11,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:59:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:59:11,755 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) [2024-05-12 12:59:11,807 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 [2024-05-12 12:59:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:59:11,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:59:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:59:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:59:11,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:59:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:59:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:59:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:59:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 12:59:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 12:59:11,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 12:59:11,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 12:59:11,838 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 12:59:11,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 12:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:59:11,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:59:11,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:59:11,841 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:59:11,952 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:59:11,953 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:59:12,276 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:59:12,276 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:59:12,427 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:59:12,428 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:59:12,428 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:59:12 BoogieIcfgContainer [2024-05-12 12:59:12,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:59:12,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:59:12,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:59:12,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:59:12,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:59:10" (1/4) ... [2024-05-12 12:59:12,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf5ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:59:12, skipping insertion in model container [2024-05-12 12:59:12,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:59:10" (2/4) ... [2024-05-12 12:59:12,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf5ff4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:59:12, skipping insertion in model container [2024-05-12 12:59:12,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:59:11" (3/4) ... [2024-05-12 12:59:12,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf5ff4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:59:12, skipping insertion in model container [2024-05-12 12:59:12,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:59:12" (4/4) ... [2024-05-12 12:59:12,436 INFO L112 eAbstractionObserver]: Analyzing ICFG mix001.opt.i [2024-05-12 12:59:12,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:59:12,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 12:59:12,450 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:59:12,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:59:12,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 112 flow [2024-05-12 12:59:12,539 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-05-12 12:59:12,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:59:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-05-12 12:59:12,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 112 flow [2024-05-12 12:59:12,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 47 transitions, 103 flow [2024-05-12 12:59:12,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:59:12,555 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;@32b4b231, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:59:12,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 12:59:12,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:59:12,558 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:59:12,558 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:59:12,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:12,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:59:12,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:12,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1416930652, now seen corresponding path program 1 times [2024-05-12 12:59:12,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:12,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791810657] [2024-05-12 12:59:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:13,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:13,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791810657] [2024-05-12 12:59:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791810657] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:13,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:13,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:59:13,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554639867] [2024-05-12 12:59:13,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:59:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:13,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:59:13,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:59:13,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 50 [2024-05-12 12:59:13,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:13,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:13,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 50 [2024-05-12 12:59:13,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:14,453 INFO L124 PetriNetUnfolderBase]: 2349/4004 cut-off events. [2024-05-12 12:59:14,453 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-05-12 12:59:14,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7484 conditions, 4004 events. 2349/4004 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26712 event pairs, 1832 based on Foata normal form. 121/3775 useless extension candidates. Maximal degree in co-relation 7469. Up to 3411 conditions per place. [2024-05-12 12:59:14,477 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 41 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-05-12 12:59:14,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 229 flow [2024-05-12 12:59:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:59:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:59:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-05-12 12:59:14,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-05-12 12:59:14,488 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 103 flow. Second operand 3 states and 105 transitions. [2024-05-12 12:59:14,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 229 flow [2024-05-12 12:59:14,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:14,494 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 135 flow [2024-05-12 12:59:14,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2024-05-12 12:59:14,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-05-12 12:59:14,506 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 135 flow [2024-05-12 12:59:14,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:14,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:14,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:14,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:59:14,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:14,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -165670141, now seen corresponding path program 1 times [2024-05-12 12:59:14,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:14,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997728728] [2024-05-12 12:59:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:15,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997728728] [2024-05-12 12:59:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997728728] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:15,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:15,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:59:15,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393946931] [2024-05-12 12:59:15,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:15,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:59:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:15,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:59:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:59:15,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-05-12 12:59:15,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:15,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:15,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-05-12 12:59:15,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:15,810 INFO L124 PetriNetUnfolderBase]: 3428/5182 cut-off events. [2024-05-12 12:59:15,810 INFO L125 PetriNetUnfolderBase]: For 787/787 co-relation queries the response was YES. [2024-05-12 12:59:15,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11394 conditions, 5182 events. 3428/5182 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31141 event pairs, 1817 based on Foata normal form. 3/4952 useless extension candidates. Maximal degree in co-relation 11379. Up to 4908 conditions per place. [2024-05-12 12:59:15,835 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 54 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-05-12 12:59:15,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 76 transitions, 327 flow [2024-05-12 12:59:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:59:15,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:59:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-05-12 12:59:15,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-05-12 12:59:15,837 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 135 flow. Second operand 4 states and 130 transitions. [2024-05-12 12:59:15,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 76 transitions, 327 flow [2024-05-12 12:59:15,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:59:15,839 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 181 flow [2024-05-12 12:59:15,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-05-12 12:59:15,840 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-05-12 12:59:15,840 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 181 flow [2024-05-12 12:59:15,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:15,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:15,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:59:15,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:15,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash -840805339, now seen corresponding path program 1 times [2024-05-12 12:59:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:15,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093693550] [2024-05-12 12:59:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:16,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:16,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093693550] [2024-05-12 12:59:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093693550] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:59:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659238818] [2024-05-12 12:59:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:59:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:59:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:59:16,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-05-12 12:59:16,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2024-05-12 12:59:16,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:16,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-05-12 12:59:16,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:17,299 INFO L124 PetriNetUnfolderBase]: 3421/5571 cut-off events. [2024-05-12 12:59:17,299 INFO L125 PetriNetUnfolderBase]: For 2127/2127 co-relation queries the response was YES. [2024-05-12 12:59:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12940 conditions, 5571 events. 3421/5571 cut-off events. For 2127/2127 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36020 event pairs, 1630 based on Foata normal form. 3/5235 useless extension candidates. Maximal degree in co-relation 12923. Up to 4875 conditions per place. [2024-05-12 12:59:17,329 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 65 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-05-12 12:59:17,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 435 flow [2024-05-12 12:59:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:59:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:59:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-05-12 12:59:17,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.644 [2024-05-12 12:59:17,334 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 181 flow. Second operand 5 states and 161 transitions. [2024-05-12 12:59:17,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 435 flow [2024-05-12 12:59:17,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 416 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:17,339 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 227 flow [2024-05-12 12:59:17,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-05-12 12:59:17,340 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-05-12 12:59:17,341 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 227 flow [2024-05-12 12:59:17,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 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) [2024-05-12 12:59:17,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:17,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:59:17,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:17,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1739414448, now seen corresponding path program 1 times [2024-05-12 12:59:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:17,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982151013] [2024-05-12 12:59:17,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:18,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982151013] [2024-05-12 12:59:18,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982151013] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:59:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166360362] [2024-05-12 12:59:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:18,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:59:18,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:18,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:59:18,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:59:18,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 12:59:18,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2024-05-12 12:59:18,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:18,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 12:59:18,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:19,168 INFO L124 PetriNetUnfolderBase]: 4816/7282 cut-off events. [2024-05-12 12:59:19,168 INFO L125 PetriNetUnfolderBase]: For 4407/4407 co-relation queries the response was YES. [2024-05-12 12:59:19,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18727 conditions, 7282 events. 4816/7282 cut-off events. For 4407/4407 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 43866 event pairs, 2155 based on Foata normal form. 2/6923 useless extension candidates. Maximal degree in co-relation 18709. Up to 6829 conditions per place. [2024-05-12 12:59:19,207 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 60 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2024-05-12 12:59:19,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 437 flow [2024-05-12 12:59:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:59:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:59:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-05-12 12:59:19,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-05-12 12:59:19,209 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 227 flow. Second operand 5 states and 140 transitions. [2024-05-12 12:59:19,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 437 flow [2024-05-12 12:59:19,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 404 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:19,212 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 253 flow [2024-05-12 12:59:19,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-05-12 12:59:19,213 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-05-12 12:59:19,213 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 253 flow [2024-05-12 12:59:19,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 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) [2024-05-12 12:59:19,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:19,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:59:19,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:19,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -291432379, now seen corresponding path program 1 times [2024-05-12 12:59:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835017590] [2024-05-12 12:59:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:19,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:20,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:20,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:20,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835017590] [2024-05-12 12:59:20,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835017590] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:20,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:20,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:20,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125475073] [2024-05-12 12:59:20,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:20,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:20,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:20,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 12:59:20,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-05-12 12:59:20,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:20,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 12:59:20,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:21,027 INFO L124 PetriNetUnfolderBase]: 4760/7038 cut-off events. [2024-05-12 12:59:21,027 INFO L125 PetriNetUnfolderBase]: For 7264/7264 co-relation queries the response was YES. [2024-05-12 12:59:21,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19606 conditions, 7038 events. 4760/7038 cut-off events. For 7264/7264 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41745 event pairs, 1235 based on Foata normal form. 6/6781 useless extension candidates. Maximal degree in co-relation 19586. Up to 6632 conditions per place. [2024-05-12 12:59:21,067 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 88 selfloop transitions, 20 changer transitions 0/121 dead transitions. [2024-05-12 12:59:21,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 121 transitions, 627 flow [2024-05-12 12:59:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-05-12 12:59:21,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085714285714285 [2024-05-12 12:59:21,069 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 253 flow. Second operand 7 states and 213 transitions. [2024-05-12 12:59:21,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 121 transitions, 627 flow [2024-05-12 12:59:21,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 121 transitions, 598 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:21,074 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 319 flow [2024-05-12 12:59:21,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=319, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-05-12 12:59:21,074 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-05-12 12:59:21,075 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 319 flow [2024-05-12 12:59:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 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) [2024-05-12 12:59:21,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:21,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:59:21,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:21,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1946689483, now seen corresponding path program 1 times [2024-05-12 12:59:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:21,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273382629] [2024-05-12 12:59:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:21,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273382629] [2024-05-12 12:59:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273382629] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:21,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:21,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:21,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754385037] [2024-05-12 12:59:21,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:21,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:21,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:21,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:21,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:21,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 12:59:21,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:21,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:21,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 12:59:21,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:22,936 INFO L124 PetriNetUnfolderBase]: 4795/7299 cut-off events. [2024-05-12 12:59:22,937 INFO L125 PetriNetUnfolderBase]: For 9761/9761 co-relation queries the response was YES. [2024-05-12 12:59:22,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21505 conditions, 7299 events. 4795/7299 cut-off events. For 9761/9761 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 44314 event pairs, 1532 based on Foata normal form. 4/7013 useless extension candidates. Maximal degree in co-relation 21484. Up to 6758 conditions per place. [2024-05-12 12:59:22,981 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 76 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-05-12 12:59:22,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 103 transitions, 601 flow [2024-05-12 12:59:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:59:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:59:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-05-12 12:59:22,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-05-12 12:59:22,983 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 319 flow. Second operand 6 states and 168 transitions. [2024-05-12 12:59:22,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 103 transitions, 601 flow [2024-05-12 12:59:22,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 545 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:22,990 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 340 flow [2024-05-12 12:59:22,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2024-05-12 12:59:22,992 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-05-12 12:59:22,993 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 340 flow [2024-05-12 12:59:22,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:22,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:22,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:22,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:59:22,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:22,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1912446344, now seen corresponding path program 1 times [2024-05-12 12:59:22,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777907579] [2024-05-12 12:59:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777907579] [2024-05-12 12:59:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777907579] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:23,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:59:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538150493] [2024-05-12 12:59:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:59:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:59:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:59:23,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 50 [2024-05-12 12:59:23,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:23,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:23,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 50 [2024-05-12 12:59:23,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:23,439 INFO L124 PetriNetUnfolderBase]: 1642/3483 cut-off events. [2024-05-12 12:59:23,439 INFO L125 PetriNetUnfolderBase]: For 5637/5913 co-relation queries the response was YES. [2024-05-12 12:59:23,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 3483 events. 1642/3483 cut-off events. For 5637/5913 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 28566 event pairs, 557 based on Foata normal form. 2/3184 useless extension candidates. Maximal degree in co-relation 8105. Up to 2186 conditions per place. [2024-05-12 12:59:23,461 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 28 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-05-12 12:59:23,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 372 flow [2024-05-12 12:59:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:59:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:59:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-05-12 12:59:23,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2024-05-12 12:59:23,463 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 340 flow. Second operand 3 states and 109 transitions. [2024-05-12 12:59:23,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 372 flow [2024-05-12 12:59:23,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 340 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:23,466 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 268 flow [2024-05-12 12:59:23,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-05-12 12:59:23,468 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2024-05-12 12:59:23,468 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 268 flow [2024-05-12 12:59:23,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:23,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:23,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:23,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:59:23,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:23,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash 246251025, now seen corresponding path program 1 times [2024-05-12 12:59:23,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:23,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875519470] [2024-05-12 12:59:23,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:23,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:24,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:24,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875519470] [2024-05-12 12:59:24,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875519470] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:24,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:24,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:24,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114302807] [2024-05-12 12:59:24,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:24,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:24,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:24,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:24,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:24,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:24,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:24,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:25,317 INFO L124 PetriNetUnfolderBase]: 5075/7363 cut-off events. [2024-05-12 12:59:25,318 INFO L125 PetriNetUnfolderBase]: For 15574/15580 co-relation queries the response was YES. [2024-05-12 12:59:25,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22117 conditions, 7363 events. 5075/7363 cut-off events. For 15574/15580 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 41091 event pairs, 1627 based on Foata normal form. 6/7365 useless extension candidates. Maximal degree in co-relation 22095. Up to 7149 conditions per place. [2024-05-12 12:59:25,349 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 75 selfloop transitions, 16 changer transitions 4/105 dead transitions. [2024-05-12 12:59:25,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 610 flow [2024-05-12 12:59:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:59:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:59:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-05-12 12:59:25,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-05-12 12:59:25,351 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 268 flow. Second operand 6 states and 160 transitions. [2024-05-12 12:59:25,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 610 flow [2024-05-12 12:59:25,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 105 transitions, 588 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:25,357 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 338 flow [2024-05-12 12:59:25,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-05-12 12:59:25,358 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2024-05-12 12:59:25,358 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 338 flow [2024-05-12 12:59:25,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:25,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:25,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:25,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:59:25,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:25,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash 767087395, now seen corresponding path program 2 times [2024-05-12 12:59:25,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:25,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707974471] [2024-05-12 12:59:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:25,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:26,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:26,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707974471] [2024-05-12 12:59:26,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707974471] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:26,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:26,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:59:26,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435654779] [2024-05-12 12:59:26,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:59:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:26,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:59:26,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:59:26,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:26,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:26,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:26,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:27,139 INFO L124 PetriNetUnfolderBase]: 4431/6454 cut-off events. [2024-05-12 12:59:27,139 INFO L125 PetriNetUnfolderBase]: For 16689/16702 co-relation queries the response was YES. [2024-05-12 12:59:27,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20521 conditions, 6454 events. 4431/6454 cut-off events. For 16689/16702 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35560 event pairs, 1460 based on Foata normal form. 12/6462 useless extension candidates. Maximal degree in co-relation 20497. Up to 6261 conditions per place. [2024-05-12 12:59:27,194 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 70 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-05-12 12:59:27,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 572 flow [2024-05-12 12:59:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:59:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:59:27,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-05-12 12:59:27,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-05-12 12:59:27,196 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 338 flow. Second operand 6 states and 151 transitions. [2024-05-12 12:59:27,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 572 flow [2024-05-12 12:59:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 536 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:27,210 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 342 flow [2024-05-12 12:59:27,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-05-12 12:59:27,211 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2024-05-12 12:59:27,211 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 342 flow [2024-05-12 12:59:27,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:27,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:27,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:27,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:59:27,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:27,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash 976590277, now seen corresponding path program 1 times [2024-05-12 12:59:27,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:27,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313004969] [2024-05-12 12:59:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:27,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:28,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313004969] [2024-05-12 12:59:28,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313004969] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:28,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:28,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179570077] [2024-05-12 12:59:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:28,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:28,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:28,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:28,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:28,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:29,161 INFO L124 PetriNetUnfolderBase]: 4624/6756 cut-off events. [2024-05-12 12:59:29,165 INFO L125 PetriNetUnfolderBase]: For 19606/19616 co-relation queries the response was YES. [2024-05-12 12:59:29,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22025 conditions, 6756 events. 4624/6756 cut-off events. For 19606/19616 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 37405 event pairs, 1411 based on Foata normal form. 10/6757 useless extension candidates. Maximal degree in co-relation 21999. Up to 6349 conditions per place. [2024-05-12 12:59:29,195 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 98 selfloop transitions, 42 changer transitions 0/150 dead transitions. [2024-05-12 12:59:29,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 150 transitions, 1052 flow [2024-05-12 12:59:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-05-12 12:59:29,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-05-12 12:59:29,198 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 342 flow. Second operand 8 states and 214 transitions. [2024-05-12 12:59:29,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 150 transitions, 1052 flow [2024-05-12 12:59:29,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 150 transitions, 987 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 12:59:29,212 INFO L231 Difference]: Finished difference. Result has 80 places, 97 transitions, 632 flow [2024-05-12 12:59:29,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=632, PETRI_PLACES=80, PETRI_TRANSITIONS=97} [2024-05-12 12:59:29,214 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-05-12 12:59:29,214 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 97 transitions, 632 flow [2024-05-12 12:59:29,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:29,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:29,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:29,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:59:29,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:29,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:29,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1211490001, now seen corresponding path program 2 times [2024-05-12 12:59:29,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:29,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20994502] [2024-05-12 12:59:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:29,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20994502] [2024-05-12 12:59:30,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20994502] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:30,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:30,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:30,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615050891] [2024-05-12 12:59:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:30,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:30,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:30,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:30,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:30,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 97 transitions, 632 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:30,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:30,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:30,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:31,157 INFO L124 PetriNetUnfolderBase]: 4664/6810 cut-off events. [2024-05-12 12:59:31,157 INFO L125 PetriNetUnfolderBase]: For 24983/24997 co-relation queries the response was YES. [2024-05-12 12:59:31,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24101 conditions, 6810 events. 4664/6810 cut-off events. For 24983/24997 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 37635 event pairs, 1420 based on Foata normal form. 16/6817 useless extension candidates. Maximal degree in co-relation 24071. Up to 6391 conditions per place. [2024-05-12 12:59:31,193 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 90 selfloop transitions, 49 changer transitions 0/149 dead transitions. [2024-05-12 12:59:31,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 149 transitions, 1160 flow [2024-05-12 12:59:31,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-05-12 12:59:31,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-05-12 12:59:31,197 INFO L175 Difference]: Start difference. First operand has 80 places, 97 transitions, 632 flow. Second operand 7 states and 184 transitions. [2024-05-12 12:59:31,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 149 transitions, 1160 flow [2024-05-12 12:59:31,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 149 transitions, 1126 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:31,223 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 781 flow [2024-05-12 12:59:31,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=781, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2024-05-12 12:59:31,224 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-05-12 12:59:31,224 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 781 flow [2024-05-12 12:59:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:31,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:31,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:59:31,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:31,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:31,226 INFO L85 PathProgramCache]: Analyzing trace with hash -321545856, now seen corresponding path program 1 times [2024-05-12 12:59:31,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:31,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097656129] [2024-05-12 12:59:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:31,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:32,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097656129] [2024-05-12 12:59:32,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097656129] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:32,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:32,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570560904] [2024-05-12 12:59:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:32,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:32,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 781 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:32,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:32,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:32,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:33,231 INFO L124 PetriNetUnfolderBase]: 4710/6889 cut-off events. [2024-05-12 12:59:33,232 INFO L125 PetriNetUnfolderBase]: For 27904/27912 co-relation queries the response was YES. [2024-05-12 12:59:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24753 conditions, 6889 events. 4710/6889 cut-off events. For 27904/27912 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 37963 event pairs, 1306 based on Foata normal form. 12/6887 useless extension candidates. Maximal degree in co-relation 24721. Up to 6476 conditions per place. [2024-05-12 12:59:33,273 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 116 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2024-05-12 12:59:33,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1313 flow [2024-05-12 12:59:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:33,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-05-12 12:59:33,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2024-05-12 12:59:33,275 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 781 flow. Second operand 7 states and 185 transitions. [2024-05-12 12:59:33,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 1313 flow [2024-05-12 12:59:33,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 1189 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 12:59:33,305 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 792 flow [2024-05-12 12:59:33,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=792, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-05-12 12:59:33,306 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 31 predicate places. [2024-05-12 12:59:33,306 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 792 flow [2024-05-12 12:59:33,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:33,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:33,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:59:33,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:33,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1084682597, now seen corresponding path program 3 times [2024-05-12 12:59:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:33,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561346695] [2024-05-12 12:59:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:33,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561346695] [2024-05-12 12:59:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561346695] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753443985] [2024-05-12 12:59:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:34,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:34,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 792 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:34,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:34,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:34,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:35,418 INFO L124 PetriNetUnfolderBase]: 4769/6973 cut-off events. [2024-05-12 12:59:35,418 INFO L125 PetriNetUnfolderBase]: For 30438/30441 co-relation queries the response was YES. [2024-05-12 12:59:35,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25742 conditions, 6973 events. 4769/6973 cut-off events. For 30438/30441 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 38521 event pairs, 1378 based on Foata normal form. 7/6968 useless extension candidates. Maximal degree in co-relation 25710. Up to 6517 conditions per place. [2024-05-12 12:59:35,456 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 96 selfloop transitions, 55 changer transitions 0/161 dead transitions. [2024-05-12 12:59:35,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 161 transitions, 1368 flow [2024-05-12 12:59:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:35,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:35,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 12:59:35,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 12:59:35,458 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 792 flow. Second operand 7 states and 182 transitions. [2024-05-12 12:59:35,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 161 transitions, 1368 flow [2024-05-12 12:59:35,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1329 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 12:59:35,493 INFO L231 Difference]: Finished difference. Result has 91 places, 118 transitions, 980 flow [2024-05-12 12:59:35,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=980, PETRI_PLACES=91, PETRI_TRANSITIONS=118} [2024-05-12 12:59:35,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 35 predicate places. [2024-05-12 12:59:35,494 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 118 transitions, 980 flow [2024-05-12 12:59:35,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:35,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:35,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:35,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:59:35,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:35,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash 8551220, now seen corresponding path program 2 times [2024-05-12 12:59:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887915190] [2024-05-12 12:59:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:36,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:36,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887915190] [2024-05-12 12:59:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887915190] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:36,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:36,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:36,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057291173] [2024-05-12 12:59:36,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:36,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:36,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:36,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:36,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:36,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 118 transitions, 980 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:36,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:36,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:36,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:37,643 INFO L124 PetriNetUnfolderBase]: 4815/7039 cut-off events. [2024-05-12 12:59:37,643 INFO L125 PetriNetUnfolderBase]: For 34298/34320 co-relation queries the response was YES. [2024-05-12 12:59:37,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26681 conditions, 7039 events. 4815/7039 cut-off events. For 34298/34320 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38893 event pairs, 1288 based on Foata normal form. 20/7047 useless extension candidates. Maximal degree in co-relation 26647. Up to 6596 conditions per place. [2024-05-12 12:59:37,695 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 125 selfloop transitions, 33 changer transitions 0/168 dead transitions. [2024-05-12 12:59:37,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1524 flow [2024-05-12 12:59:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 12:59:37,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 12:59:37,697 INFO L175 Difference]: Start difference. First operand has 91 places, 118 transitions, 980 flow. Second operand 7 states and 182 transitions. [2024-05-12 12:59:37,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1524 flow [2024-05-12 12:59:37,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 168 transitions, 1403 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:37,749 INFO L231 Difference]: Finished difference. Result has 94 places, 121 transitions, 968 flow [2024-05-12 12:59:37,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=968, PETRI_PLACES=94, PETRI_TRANSITIONS=121} [2024-05-12 12:59:37,749 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 38 predicate places. [2024-05-12 12:59:37,750 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 121 transitions, 968 flow [2024-05-12 12:59:37,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:37,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:37,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:37,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:59:37,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:37,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:37,751 INFO L85 PathProgramCache]: Analyzing trace with hash -315981883, now seen corresponding path program 4 times [2024-05-12 12:59:37,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:37,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666180568] [2024-05-12 12:59:37,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:38,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666180568] [2024-05-12 12:59:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666180568] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789545523] [2024-05-12 12:59:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:38,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:38,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:38,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:38,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 121 transitions, 968 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:38,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:38,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:38,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:39,870 INFO L124 PetriNetUnfolderBase]: 4804/7024 cut-off events. [2024-05-12 12:59:39,870 INFO L125 PetriNetUnfolderBase]: For 37005/37010 co-relation queries the response was YES. [2024-05-12 12:59:39,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26626 conditions, 7024 events. 4804/7024 cut-off events. For 37005/37010 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 38750 event pairs, 1390 based on Foata normal form. 8/7016 useless extension candidates. Maximal degree in co-relation 26591. Up to 6570 conditions per place. [2024-05-12 12:59:39,912 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 95 selfloop transitions, 55 changer transitions 0/160 dead transitions. [2024-05-12 12:59:39,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 160 transitions, 1394 flow [2024-05-12 12:59:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 12:59:39,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-05-12 12:59:39,915 INFO L175 Difference]: Start difference. First operand has 94 places, 121 transitions, 968 flow. Second operand 7 states and 177 transitions. [2024-05-12 12:59:39,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 160 transitions, 1394 flow [2024-05-12 12:59:39,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 160 transitions, 1268 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-05-12 12:59:39,950 INFO L231 Difference]: Finished difference. Result has 96 places, 121 transitions, 967 flow [2024-05-12 12:59:39,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=967, PETRI_PLACES=96, PETRI_TRANSITIONS=121} [2024-05-12 12:59:39,951 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-05-12 12:59:39,951 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 121 transitions, 967 flow [2024-05-12 12:59:39,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:39,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:39,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:39,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 12:59:39,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:39,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -114625506, now seen corresponding path program 3 times [2024-05-12 12:59:39,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391904108] [2024-05-12 12:59:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:39,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391904108] [2024-05-12 12:59:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391904108] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:40,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:59:40,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187720688] [2024-05-12 12:59:40,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:59:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:59:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:59:40,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:40,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 121 transitions, 967 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:40,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:40,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:40,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:42,025 INFO L124 PetriNetUnfolderBase]: 4794/7005 cut-off events. [2024-05-12 12:59:42,025 INFO L125 PetriNetUnfolderBase]: For 38728/38741 co-relation queries the response was YES. [2024-05-12 12:59:42,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26692 conditions, 7005 events. 4794/7005 cut-off events. For 38728/38741 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38596 event pairs, 1288 based on Foata normal form. 14/7008 useless extension candidates. Maximal degree in co-relation 26656. Up to 6573 conditions per place. [2024-05-12 12:59:42,080 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 118 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2024-05-12 12:59:42,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1405 flow [2024-05-12 12:59:42,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:59:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:59:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 12:59:42,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-05-12 12:59:42,082 INFO L175 Difference]: Start difference. First operand has 96 places, 121 transitions, 967 flow. Second operand 7 states and 178 transitions. [2024-05-12 12:59:42,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1405 flow [2024-05-12 12:59:42,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 163 transitions, 1210 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-05-12 12:59:42,128 INFO L231 Difference]: Finished difference. Result has 95 places, 121 transitions, 850 flow [2024-05-12 12:59:42,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=850, PETRI_PLACES=95, PETRI_TRANSITIONS=121} [2024-05-12 12:59:42,129 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-05-12 12:59:42,129 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 121 transitions, 850 flow [2024-05-12 12:59:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:42,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:42,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 12:59:42,130 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:42,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -386484264, now seen corresponding path program 1 times [2024-05-12 12:59:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:42,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242833552] [2024-05-12 12:59:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:42,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242833552] [2024-05-12 12:59:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242833552] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:43,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:59:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218881148] [2024-05-12 12:59:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:59:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:59:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:59:43,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-05-12 12:59:43,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 121 transitions, 850 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-05-12 12:59:43,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:43,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-05-12 12:59:43,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:43,803 INFO L124 PetriNetUnfolderBase]: 3338/6090 cut-off events. [2024-05-12 12:59:43,804 INFO L125 PetriNetUnfolderBase]: For 33451/33522 co-relation queries the response was YES. [2024-05-12 12:59:43,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20399 conditions, 6090 events. 3338/6090 cut-off events. For 33451/33522 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 43898 event pairs, 1477 based on Foata normal form. 44/5940 useless extension candidates. Maximal degree in co-relation 20363. Up to 4765 conditions per place. [2024-05-12 12:59:43,847 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 84 selfloop transitions, 9 changer transitions 0/142 dead transitions. [2024-05-12 12:59:43,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 1123 flow [2024-05-12 12:59:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:59:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:59:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-05-12 12:59:43,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.544 [2024-05-12 12:59:43,849 INFO L175 Difference]: Start difference. First operand has 95 places, 121 transitions, 850 flow. Second operand 5 states and 136 transitions. [2024-05-12 12:59:43,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 1123 flow [2024-05-12 12:59:43,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 1036 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 12:59:43,875 INFO L231 Difference]: Finished difference. Result has 95 places, 128 transitions, 853 flow [2024-05-12 12:59:43,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=853, PETRI_PLACES=95, PETRI_TRANSITIONS=128} [2024-05-12 12:59:43,876 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2024-05-12 12:59:43,876 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 128 transitions, 853 flow [2024-05-12 12:59:43,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 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) [2024-05-12 12:59:43,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:43,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:43,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 12:59:43,877 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:43,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:43,877 INFO L85 PathProgramCache]: Analyzing trace with hash 729816858, now seen corresponding path program 1 times [2024-05-12 12:59:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:43,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647059381] [2024-05-12 12:59:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:44,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:44,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647059381] [2024-05-12 12:59:44,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647059381] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:44,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:44,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:44,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395012641] [2024-05-12 12:59:44,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:44,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:44,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:44,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:44,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:44,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:44,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 128 transitions, 853 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:44,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:44,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:44,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:46,096 INFO L124 PetriNetUnfolderBase]: 4819/7826 cut-off events. [2024-05-12 12:59:46,097 INFO L125 PetriNetUnfolderBase]: For 45490/45494 co-relation queries the response was YES. [2024-05-12 12:59:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28542 conditions, 7826 events. 4819/7826 cut-off events. For 45490/45494 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 49865 event pairs, 1601 based on Foata normal form. 6/7568 useless extension candidates. Maximal degree in co-relation 28504. Up to 6732 conditions per place. [2024-05-12 12:59:46,147 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 148 selfloop transitions, 27 changer transitions 0/185 dead transitions. [2024-05-12 12:59:46,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 185 transitions, 1413 flow [2024-05-12 12:59:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-05-12 12:59:46,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-05-12 12:59:46,148 INFO L175 Difference]: Start difference. First operand has 95 places, 128 transitions, 853 flow. Second operand 8 states and 206 transitions. [2024-05-12 12:59:46,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 185 transitions, 1413 flow [2024-05-12 12:59:46,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 185 transitions, 1390 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 12:59:46,179 INFO L231 Difference]: Finished difference. Result has 101 places, 131 transitions, 930 flow [2024-05-12 12:59:46,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=101, PETRI_TRANSITIONS=131} [2024-05-12 12:59:46,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-05-12 12:59:46,180 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 131 transitions, 930 flow [2024-05-12 12:59:46,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:46,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:46,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:46,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 12:59:46,181 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:46,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:46,181 INFO L85 PathProgramCache]: Analyzing trace with hash 505222326, now seen corresponding path program 1 times [2024-05-12 12:59:46,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934755393] [2024-05-12 12:59:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:47,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:47,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:47,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934755393] [2024-05-12 12:59:47,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934755393] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:47,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:47,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:47,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080817359] [2024-05-12 12:59:47,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:47,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:47,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:47,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:47,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:47,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:47,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 131 transitions, 930 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:47,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:47,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:47,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:48,455 INFO L124 PetriNetUnfolderBase]: 4865/7751 cut-off events. [2024-05-12 12:59:48,455 INFO L125 PetriNetUnfolderBase]: For 52614/52618 co-relation queries the response was YES. [2024-05-12 12:59:48,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29866 conditions, 7751 events. 4865/7751 cut-off events. For 52614/52618 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 47978 event pairs, 1363 based on Foata normal form. 8/7527 useless extension candidates. Maximal degree in co-relation 29826. Up to 6309 conditions per place. [2024-05-12 12:59:48,514 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 118 selfloop transitions, 67 changer transitions 0/195 dead transitions. [2024-05-12 12:59:48,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 195 transitions, 1610 flow [2024-05-12 12:59:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 12:59:48,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-05-12 12:59:48,516 INFO L175 Difference]: Start difference. First operand has 101 places, 131 transitions, 930 flow. Second operand 8 states and 215 transitions. [2024-05-12 12:59:48,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 195 transitions, 1610 flow [2024-05-12 12:59:48,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 195 transitions, 1534 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 12:59:48,563 INFO L231 Difference]: Finished difference. Result has 103 places, 137 transitions, 1068 flow [2024-05-12 12:59:48,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=103, PETRI_TRANSITIONS=137} [2024-05-12 12:59:48,564 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2024-05-12 12:59:48,565 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 137 transitions, 1068 flow [2024-05-12 12:59:48,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:48,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:48,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:48,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 12:59:48,565 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:48,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:48,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1382634704, now seen corresponding path program 2 times [2024-05-12 12:59:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:48,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65101087] [2024-05-12 12:59:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:49,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:49,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:49,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65101087] [2024-05-12 12:59:49,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65101087] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:49,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671318758] [2024-05-12 12:59:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:49,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:49,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:49,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:49,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 137 transitions, 1068 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:49,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:50,786 INFO L124 PetriNetUnfolderBase]: 4888/7790 cut-off events. [2024-05-12 12:59:50,786 INFO L125 PetriNetUnfolderBase]: For 59903/59910 co-relation queries the response was YES. [2024-05-12 12:59:50,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31381 conditions, 7790 events. 4888/7790 cut-off events. For 59903/59910 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 48273 event pairs, 1481 based on Foata normal form. 8/7572 useless extension candidates. Maximal degree in co-relation 31340. Up to 6534 conditions per place. [2024-05-12 12:59:50,846 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 125 selfloop transitions, 63 changer transitions 0/198 dead transitions. [2024-05-12 12:59:50,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 198 transitions, 1770 flow [2024-05-12 12:59:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-05-12 12:59:50,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-05-12 12:59:50,848 INFO L175 Difference]: Start difference. First operand has 103 places, 137 transitions, 1068 flow. Second operand 8 states and 210 transitions. [2024-05-12 12:59:50,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 198 transitions, 1770 flow [2024-05-12 12:59:50,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 198 transitions, 1690 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:50,918 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1210 flow [2024-05-12 12:59:50,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1210, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-05-12 12:59:50,919 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-05-12 12:59:50,919 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1210 flow [2024-05-12 12:59:50,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:50,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:50,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 12:59:50,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:50,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1093873406, now seen corresponding path program 3 times [2024-05-12 12:59:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:50,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780335592] [2024-05-12 12:59:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:50,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:51,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:51,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780335592] [2024-05-12 12:59:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780335592] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:51,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:51,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:51,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317476353] [2024-05-12 12:59:51,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:51,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:51,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:51,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:51,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:51,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:51,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1210 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:51,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:51,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:51,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:53,082 INFO L124 PetriNetUnfolderBase]: 4911/7843 cut-off events. [2024-05-12 12:59:53,082 INFO L125 PetriNetUnfolderBase]: For 67764/67767 co-relation queries the response was YES. [2024-05-12 12:59:53,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32824 conditions, 7843 events. 4911/7843 cut-off events. For 67764/67767 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 48744 event pairs, 1501 based on Foata normal form. 4/7616 useless extension candidates. Maximal degree in co-relation 32781. Up to 6558 conditions per place. [2024-05-12 12:59:53,140 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 125 selfloop transitions, 63 changer transitions 0/198 dead transitions. [2024-05-12 12:59:53,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 198 transitions, 1870 flow [2024-05-12 12:59:53,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-05-12 12:59:53,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 12:59:53,142 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1210 flow. Second operand 8 states and 208 transitions. [2024-05-12 12:59:53,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 198 transitions, 1870 flow [2024-05-12 12:59:53,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 198 transitions, 1780 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:53,216 INFO L231 Difference]: Finished difference. Result has 111 places, 146 transitions, 1302 flow [2024-05-12 12:59:53,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1302, PETRI_PLACES=111, PETRI_TRANSITIONS=146} [2024-05-12 12:59:53,216 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 55 predicate places. [2024-05-12 12:59:53,217 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 146 transitions, 1302 flow [2024-05-12 12:59:53,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:53,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:53,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:53,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 12:59:53,217 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:53,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:53,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1377986378, now seen corresponding path program 2 times [2024-05-12 12:59:53,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:53,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555632551] [2024-05-12 12:59:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555632551] [2024-05-12 12:59:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555632551] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:54,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:54,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479429262] [2024-05-12 12:59:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:54,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:54,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:54,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:54,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:54,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:54,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 146 transitions, 1302 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:54,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:54,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:54,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:55,568 INFO L124 PetriNetUnfolderBase]: 5013/7999 cut-off events. [2024-05-12 12:59:55,568 INFO L125 PetriNetUnfolderBase]: For 74448/74448 co-relation queries the response was YES. [2024-05-12 12:59:55,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34109 conditions, 7999 events. 5013/7999 cut-off events. For 74448/74448 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49658 event pairs, 1371 based on Foata normal form. 4/7766 useless extension candidates. Maximal degree in co-relation 34064. Up to 6459 conditions per place. [2024-05-12 12:59:55,636 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 126 selfloop transitions, 71 changer transitions 0/207 dead transitions. [2024-05-12 12:59:55,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 207 transitions, 2072 flow [2024-05-12 12:59:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:55,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:55,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 12:59:55,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-05-12 12:59:55,638 INFO L175 Difference]: Start difference. First operand has 111 places, 146 transitions, 1302 flow. Second operand 8 states and 215 transitions. [2024-05-12 12:59:55,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 207 transitions, 2072 flow [2024-05-12 12:59:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 207 transitions, 1951 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-05-12 12:59:55,723 INFO L231 Difference]: Finished difference. Result has 114 places, 152 transitions, 1395 flow [2024-05-12 12:59:55,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1395, PETRI_PLACES=114, PETRI_TRANSITIONS=152} [2024-05-12 12:59:55,724 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 58 predicate places. [2024-05-12 12:59:55,724 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 152 transitions, 1395 flow [2024-05-12 12:59:55,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:55,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:55,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:55,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 12:59:55,725 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:55,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:55,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1093873220, now seen corresponding path program 3 times [2024-05-12 12:59:55,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:55,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233713425] [2024-05-12 12:59:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233713425] [2024-05-12 12:59:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233713425] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:56,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:56,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009790575] [2024-05-12 12:59:56,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:56,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:56,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:56,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 152 transitions, 1395 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:56,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:56,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:56,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:59:57,975 INFO L124 PetriNetUnfolderBase]: 5003/7985 cut-off events. [2024-05-12 12:59:57,976 INFO L125 PetriNetUnfolderBase]: For 79600/79600 co-relation queries the response was YES. [2024-05-12 12:59:58,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34397 conditions, 7985 events. 5003/7985 cut-off events. For 79600/79600 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 49587 event pairs, 1369 based on Foata normal form. 4/7752 useless extension candidates. Maximal degree in co-relation 34351. Up to 6451 conditions per place. [2024-05-12 12:59:58,034 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 130 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-05-12 12:59:58,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 208 transitions, 2043 flow [2024-05-12 12:59:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:59:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:59:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-05-12 12:59:58,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-05-12 12:59:58,036 INFO L175 Difference]: Start difference. First operand has 114 places, 152 transitions, 1395 flow. Second operand 8 states and 215 transitions. [2024-05-12 12:59:58,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 208 transitions, 2043 flow [2024-05-12 12:59:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 208 transitions, 1912 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-05-12 12:59:58,117 INFO L231 Difference]: Finished difference. Result has 118 places, 152 transitions, 1410 flow [2024-05-12 12:59:58,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1410, PETRI_PLACES=118, PETRI_TRANSITIONS=152} [2024-05-12 12:59:58,117 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 62 predicate places. [2024-05-12 12:59:58,117 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 152 transitions, 1410 flow [2024-05-12 12:59:58,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:58,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:59:58,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:59:58,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 12:59:58,118 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:59:58,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:59:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1980140038, now seen corresponding path program 4 times [2024-05-12 12:59:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:59:58,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984892214] [2024-05-12 12:59:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:59:58,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:59:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:59:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:59:58,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:59:58,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984892214] [2024-05-12 12:59:58,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984892214] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:59:58,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:59:58,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:59:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838631646] [2024-05-12 12:59:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:59:58,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:59:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:59:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:59:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:59:59,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 12:59:59,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 152 transitions, 1410 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:59:59,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:59:59,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 12:59:59,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:00,264 INFO L124 PetriNetUnfolderBase]: 5049/7529 cut-off events. [2024-05-12 13:00:00,264 INFO L125 PetriNetUnfolderBase]: For 85537/85542 co-relation queries the response was YES. [2024-05-12 13:00:00,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34371 conditions, 7529 events. 5049/7529 cut-off events. For 85537/85542 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 43182 event pairs, 1214 based on Foata normal form. 8/7473 useless extension candidates. Maximal degree in co-relation 34324. Up to 6490 conditions per place. [2024-05-12 13:00:00,327 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 116 selfloop transitions, 79 changer transitions 0/205 dead transitions. [2024-05-12 13:00:00,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 205 transitions, 2075 flow [2024-05-12 13:00:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-05-12 13:00:00,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 13:00:00,329 INFO L175 Difference]: Start difference. First operand has 118 places, 152 transitions, 1410 flow. Second operand 8 states and 208 transitions. [2024-05-12 13:00:00,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 205 transitions, 2075 flow [2024-05-12 13:00:00,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 205 transitions, 1922 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:00,434 INFO L231 Difference]: Finished difference. Result has 119 places, 155 transitions, 1464 flow [2024-05-12 13:00:00,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1464, PETRI_PLACES=119, PETRI_TRANSITIONS=155} [2024-05-12 13:00:00,435 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-05-12 13:00:00,435 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 155 transitions, 1464 flow [2024-05-12 13:00:00,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:00,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:00,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:00,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:00:00,436 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:00,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash 733302966, now seen corresponding path program 5 times [2024-05-12 13:00:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471246843] [2024-05-12 13:00:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:00,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:01,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:01,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471246843] [2024-05-12 13:00:01,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471246843] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:01,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:01,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:01,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028214110] [2024-05-12 13:00:01,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:01,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:01,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:01,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:01,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:01,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 155 transitions, 1464 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:01,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:01,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:01,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:02,523 INFO L124 PetriNetUnfolderBase]: 5095/7584 cut-off events. [2024-05-12 13:00:02,524 INFO L125 PetriNetUnfolderBase]: For 91687/91692 co-relation queries the response was YES. [2024-05-12 13:00:02,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35020 conditions, 7584 events. 5095/7584 cut-off events. For 91687/91692 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 43279 event pairs, 1201 based on Foata normal form. 8/7534 useless extension candidates. Maximal degree in co-relation 34972. Up to 6529 conditions per place. [2024-05-12 13:00:02,583 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 127 selfloop transitions, 74 changer transitions 0/211 dead transitions. [2024-05-12 13:00:02,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 211 transitions, 2159 flow [2024-05-12 13:00:02,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 13:00:02,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275 [2024-05-12 13:00:02,586 INFO L175 Difference]: Start difference. First operand has 119 places, 155 transitions, 1464 flow. Second operand 8 states and 211 transitions. [2024-05-12 13:00:02,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 211 transitions, 2159 flow [2024-05-12 13:00:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 211 transitions, 2007 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:02,730 INFO L231 Difference]: Finished difference. Result has 122 places, 158 transitions, 1509 flow [2024-05-12 13:00:02,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1509, PETRI_PLACES=122, PETRI_TRANSITIONS=158} [2024-05-12 13:00:02,730 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-05-12 13:00:02,730 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 158 transitions, 1509 flow [2024-05-12 13:00:02,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:02,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:02,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:02,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:00:02,731 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:02,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:02,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1651077738, now seen corresponding path program 6 times [2024-05-12 13:00:02,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:02,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287393944] [2024-05-12 13:00:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:03,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:03,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287393944] [2024-05-12 13:00:03,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287393944] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:03,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:03,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:03,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854677138] [2024-05-12 13:00:03,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:03,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:03,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:03,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:03,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 158 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:03,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:03,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:03,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:05,003 INFO L124 PetriNetUnfolderBase]: 5085/7566 cut-off events. [2024-05-12 13:00:05,003 INFO L125 PetriNetUnfolderBase]: For 96185/96190 co-relation queries the response was YES. [2024-05-12 13:00:05,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35044 conditions, 7566 events. 5085/7566 cut-off events. For 96185/96190 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 43201 event pairs, 1194 based on Foata normal form. 8/7517 useless extension candidates. Maximal degree in co-relation 34995. Up to 6521 conditions per place. [2024-05-12 13:00:05,074 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 126 selfloop transitions, 75 changer transitions 0/211 dead transitions. [2024-05-12 13:00:05,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 211 transitions, 2085 flow [2024-05-12 13:00:05,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:05,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-05-12 13:00:05,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 13:00:05,076 INFO L175 Difference]: Start difference. First operand has 122 places, 158 transitions, 1509 flow. Second operand 8 states and 208 transitions. [2024-05-12 13:00:05,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 211 transitions, 2085 flow [2024-05-12 13:00:05,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 211 transitions, 1848 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:05,234 INFO L231 Difference]: Finished difference. Result has 123 places, 158 transitions, 1432 flow [2024-05-12 13:00:05,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1432, PETRI_PLACES=123, PETRI_TRANSITIONS=158} [2024-05-12 13:00:05,235 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-05-12 13:00:05,235 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 158 transitions, 1432 flow [2024-05-12 13:00:05,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:05,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:05,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:05,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:00:05,236 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:05,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1651077552, now seen corresponding path program 4 times [2024-05-12 13:00:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339731531] [2024-05-12 13:00:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339731531] [2024-05-12 13:00:06,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339731531] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:06,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:06,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:06,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601683861] [2024-05-12 13:00:06,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:06,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:06,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:06,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 158 transitions, 1432 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:06,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:06,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:06,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:07,263 INFO L124 PetriNetUnfolderBase]: 5080/7587 cut-off events. [2024-05-12 13:00:07,263 INFO L125 PetriNetUnfolderBase]: For 98732/98732 co-relation queries the response was YES. [2024-05-12 13:00:07,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35016 conditions, 7587 events. 5080/7587 cut-off events. For 98732/98732 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 43580 event pairs, 1366 based on Foata normal form. 2/7520 useless extension candidates. Maximal degree in co-relation 34966. Up to 6795 conditions per place. [2024-05-12 13:00:07,339 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 132 selfloop transitions, 63 changer transitions 0/205 dead transitions. [2024-05-12 13:00:07,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 205 transitions, 1980 flow [2024-05-12 13:00:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-05-12 13:00:07,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-05-12 13:00:07,341 INFO L175 Difference]: Start difference. First operand has 123 places, 158 transitions, 1432 flow. Second operand 8 states and 203 transitions. [2024-05-12 13:00:07,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 205 transitions, 1980 flow [2024-05-12 13:00:07,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 205 transitions, 1763 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:07,495 INFO L231 Difference]: Finished difference. Result has 123 places, 158 transitions, 1351 flow [2024-05-12 13:00:07,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1351, PETRI_PLACES=123, PETRI_TRANSITIONS=158} [2024-05-12 13:00:07,496 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-05-12 13:00:07,496 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 158 transitions, 1351 flow [2024-05-12 13:00:07,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:07,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:07,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:00:07,497 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:07,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1116200510, now seen corresponding path program 1 times [2024-05-12 13:00:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066273841] [2024-05-12 13:00:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:08,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:08,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066273841] [2024-05-12 13:00:08,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066273841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:08,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:08,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:00:08,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688310112] [2024-05-12 13:00:08,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:08,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:00:08,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:00:08,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:00:08,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:00:08,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 158 transitions, 1351 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:08,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:08,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:00:08,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:10,053 INFO L124 PetriNetUnfolderBase]: 4137/6810 cut-off events. [2024-05-12 13:00:10,053 INFO L125 PetriNetUnfolderBase]: For 90335/90392 co-relation queries the response was YES. [2024-05-12 13:00:10,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29704 conditions, 6810 events. 4137/6810 cut-off events. For 90335/90392 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 44363 event pairs, 1423 based on Foata normal form. 61/6707 useless extension candidates. Maximal degree in co-relation 29653. Up to 5793 conditions per place. [2024-05-12 13:00:10,103 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 166 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2024-05-12 13:00:10,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 206 transitions, 1899 flow [2024-05-12 13:00:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:00:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:00:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-05-12 13:00:10,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275 [2024-05-12 13:00:10,105 INFO L175 Difference]: Start difference. First operand has 123 places, 158 transitions, 1351 flow. Second operand 8 states and 211 transitions. [2024-05-12 13:00:10,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 206 transitions, 1899 flow [2024-05-12 13:00:10,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 206 transitions, 1710 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:10,225 INFO L231 Difference]: Finished difference. Result has 124 places, 163 transitions, 1267 flow [2024-05-12 13:00:10,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1267, PETRI_PLACES=124, PETRI_TRANSITIONS=163} [2024-05-12 13:00:10,230 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 68 predicate places. [2024-05-12 13:00:10,231 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 163 transitions, 1267 flow [2024-05-12 13:00:10,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:10,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:10,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:00:10,231 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:10,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:10,232 INFO L85 PathProgramCache]: Analyzing trace with hash 946790105, now seen corresponding path program 1 times [2024-05-12 13:00:10,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:10,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348953308] [2024-05-12 13:00:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:10,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348953308] [2024-05-12 13:00:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348953308] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:11,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:11,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:00:11,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970032661] [2024-05-12 13:00:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:00:11,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:11,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:00:11,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:00:11,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-05-12 13:00:11,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 163 transitions, 1267 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:11,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:11,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-05-12 13:00:11,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:12,278 INFO L124 PetriNetUnfolderBase]: 3535/6093 cut-off events. [2024-05-12 13:00:12,278 INFO L125 PetriNetUnfolderBase]: For 91169/91267 co-relation queries the response was YES. [2024-05-12 13:00:12,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26655 conditions, 6093 events. 3535/6093 cut-off events. For 91169/91267 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41703 event pairs, 1387 based on Foata normal form. 48/6012 useless extension candidates. Maximal degree in co-relation 26602. Up to 4937 conditions per place. [2024-05-12 13:00:12,331 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 115 selfloop transitions, 12 changer transitions 0/186 dead transitions. [2024-05-12 13:00:12,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 186 transitions, 1605 flow [2024-05-12 13:00:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:00:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:00:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-05-12 13:00:12,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-05-12 13:00:12,333 INFO L175 Difference]: Start difference. First operand has 124 places, 163 transitions, 1267 flow. Second operand 6 states and 162 transitions. [2024-05-12 13:00:12,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 186 transitions, 1605 flow [2024-05-12 13:00:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 186 transitions, 1540 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:00:12,439 INFO L231 Difference]: Finished difference. Result has 125 places, 166 transitions, 1264 flow [2024-05-12 13:00:12,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1264, PETRI_PLACES=125, PETRI_TRANSITIONS=166} [2024-05-12 13:00:12,440 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 69 predicate places. [2024-05-12 13:00:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 166 transitions, 1264 flow [2024-05-12 13:00:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:12,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:12,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:00:12,440 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash 302053965, now seen corresponding path program 1 times [2024-05-12 13:00:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21240677] [2024-05-12 13:00:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21240677] [2024-05-12 13:00:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21240677] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:13,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:13,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704209121] [2024-05-12 13:00:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:13,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:13,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:13,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 166 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:13,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:13,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:13,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:14,804 INFO L124 PetriNetUnfolderBase]: 5124/8312 cut-off events. [2024-05-12 13:00:14,804 INFO L125 PetriNetUnfolderBase]: For 117866/117870 co-relation queries the response was YES. [2024-05-12 13:00:14,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37086 conditions, 8312 events. 5124/8312 cut-off events. For 117866/117870 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 53144 event pairs, 1516 based on Foata normal form. 8/8051 useless extension candidates. Maximal degree in co-relation 37032. Up to 7122 conditions per place. [2024-05-12 13:00:14,866 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 192 selfloop transitions, 30 changer transitions 0/232 dead transitions. [2024-05-12 13:00:14,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 232 transitions, 1958 flow [2024-05-12 13:00:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:14,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-05-12 13:00:14,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-05-12 13:00:14,867 INFO L175 Difference]: Start difference. First operand has 125 places, 166 transitions, 1264 flow. Second operand 9 states and 231 transitions. [2024-05-12 13:00:14,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 232 transitions, 1958 flow [2024-05-12 13:00:14,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 232 transitions, 1918 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:14,966 INFO L231 Difference]: Finished difference. Result has 130 places, 169 transitions, 1342 flow [2024-05-12 13:00:14,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1342, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2024-05-12 13:00:14,967 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2024-05-12 13:00:14,967 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 1342 flow [2024-05-12 13:00:14,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:14,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:14,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:14,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:00:14,967 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:14,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1010914667, now seen corresponding path program 2 times [2024-05-12 13:00:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102418269] [2024-05-12 13:00:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:14,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:15,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102418269] [2024-05-12 13:00:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102418269] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:15,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:15,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:15,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147484553] [2024-05-12 13:00:15,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:15,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:16,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:16,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 1342 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:16,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:16,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:16,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:17,497 INFO L124 PetriNetUnfolderBase]: 5226/8092 cut-off events. [2024-05-12 13:00:17,498 INFO L125 PetriNetUnfolderBase]: For 130735/130742 co-relation queries the response was YES. [2024-05-12 13:00:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38745 conditions, 8092 events. 5226/8092 cut-off events. For 130735/130742 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49291 event pairs, 1268 based on Foata normal form. 8/7949 useless extension candidates. Maximal degree in co-relation 38690. Up to 6302 conditions per place. [2024-05-12 13:00:17,579 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 148 selfloop transitions, 89 changer transitions 0/247 dead transitions. [2024-05-12 13:00:17,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 247 transitions, 2406 flow [2024-05-12 13:00:17,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-05-12 13:00:17,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-05-12 13:00:17,580 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 1342 flow. Second operand 9 states and 245 transitions. [2024-05-12 13:00:17,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 247 transitions, 2406 flow [2024-05-12 13:00:17,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 247 transitions, 2312 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:17,798 INFO L231 Difference]: Finished difference. Result has 132 places, 178 transitions, 1590 flow [2024-05-12 13:00:17,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1590, PETRI_PLACES=132, PETRI_TRANSITIONS=178} [2024-05-12 13:00:17,799 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 76 predicate places. [2024-05-12 13:00:17,799 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 178 transitions, 1590 flow [2024-05-12 13:00:17,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:17,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:17,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:00:17,800 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:17,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash 305773035, now seen corresponding path program 3 times [2024-05-12 13:00:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225998583] [2024-05-12 13:00:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:18,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225998583] [2024-05-12 13:00:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225998583] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339378757] [2024-05-12 13:00:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:18,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:18,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:18,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:18,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 178 transitions, 1590 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:18,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:18,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:18,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:20,286 INFO L124 PetriNetUnfolderBase]: 5216/8078 cut-off events. [2024-05-12 13:00:20,286 INFO L125 PetriNetUnfolderBase]: For 140549/140556 co-relation queries the response was YES. [2024-05-12 13:00:20,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39849 conditions, 8078 events. 5216/8078 cut-off events. For 140549/140556 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49219 event pairs, 1277 based on Foata normal form. 8/7935 useless extension candidates. Maximal degree in co-relation 39793. Up to 6294 conditions per place. [2024-05-12 13:00:20,354 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 148 selfloop transitions, 88 changer transitions 0/246 dead transitions. [2024-05-12 13:00:20,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 246 transitions, 2398 flow [2024-05-12 13:00:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-05-12 13:00:20,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-05-12 13:00:20,355 INFO L175 Difference]: Start difference. First operand has 132 places, 178 transitions, 1590 flow. Second operand 9 states and 245 transitions. [2024-05-12 13:00:20,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 246 transitions, 2398 flow [2024-05-12 13:00:20,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 246 transitions, 2259 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:20,539 INFO L231 Difference]: Finished difference. Result has 137 places, 178 transitions, 1635 flow [2024-05-12 13:00:20,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1635, PETRI_PLACES=137, PETRI_TRANSITIONS=178} [2024-05-12 13:00:20,540 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 81 predicate places. [2024-05-12 13:00:20,541 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 178 transitions, 1635 flow [2024-05-12 13:00:20,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:20,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:20,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:20,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:00:20,541 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:20,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:20,542 INFO L85 PathProgramCache]: Analyzing trace with hash 231894029, now seen corresponding path program 4 times [2024-05-12 13:00:20,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:20,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501534523] [2024-05-12 13:00:20,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:20,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501534523] [2024-05-12 13:00:21,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501534523] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:21,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:21,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:21,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2292246] [2024-05-12 13:00:21,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:21,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:21,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:21,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:21,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 178 transitions, 1635 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:21,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:21,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:21,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:22,999 INFO L124 PetriNetUnfolderBase]: 5374/8325 cut-off events. [2024-05-12 13:00:22,999 INFO L125 PetriNetUnfolderBase]: For 153981/153984 co-relation queries the response was YES. [2024-05-12 13:00:23,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42190 conditions, 8325 events. 5374/8325 cut-off events. For 153981/153984 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 50825 event pairs, 1321 based on Foata normal form. 4/8188 useless extension candidates. Maximal degree in co-relation 42132. Up to 6427 conditions per place. [2024-05-12 13:00:23,170 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 154 selfloop transitions, 92 changer transitions 0/256 dead transitions. [2024-05-12 13:00:23,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 256 transitions, 2863 flow [2024-05-12 13:00:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-05-12 13:00:23,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511111111111111 [2024-05-12 13:00:23,173 INFO L175 Difference]: Start difference. First operand has 137 places, 178 transitions, 1635 flow. Second operand 9 states and 248 transitions. [2024-05-12 13:00:23,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 256 transitions, 2863 flow [2024-05-12 13:00:23,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 256 transitions, 2698 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-05-12 13:00:23,383 INFO L231 Difference]: Finished difference. Result has 139 places, 187 transitions, 1830 flow [2024-05-12 13:00:23,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1830, PETRI_PLACES=139, PETRI_TRANSITIONS=187} [2024-05-12 13:00:23,384 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 83 predicate places. [2024-05-12 13:00:23,384 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 187 transitions, 1830 flow [2024-05-12 13:00:23,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:23,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:23,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:23,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:00:23,385 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:23,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1512412291, now seen corresponding path program 5 times [2024-05-12 13:00:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:23,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364561331] [2024-05-12 13:00:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:24,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:24,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364561331] [2024-05-12 13:00:24,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364561331] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:24,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:24,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531334630] [2024-05-12 13:00:24,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:24,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:24,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:24,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:24,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 187 transitions, 1830 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:24,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:24,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:24,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:25,722 INFO L124 PetriNetUnfolderBase]: 5364/8311 cut-off events. [2024-05-12 13:00:25,722 INFO L125 PetriNetUnfolderBase]: For 161272/161275 co-relation queries the response was YES. [2024-05-12 13:00:25,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42230 conditions, 8311 events. 5364/8311 cut-off events. For 161272/161275 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 50835 event pairs, 1330 based on Foata normal form. 4/8174 useless extension candidates. Maximal degree in co-relation 42171. Up to 6419 conditions per place. [2024-05-12 13:00:25,786 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 144 selfloop transitions, 97 changer transitions 0/251 dead transitions. [2024-05-12 13:00:25,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 251 transitions, 2752 flow [2024-05-12 13:00:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-05-12 13:00:25,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-05-12 13:00:25,788 INFO L175 Difference]: Start difference. First operand has 139 places, 187 transitions, 1830 flow. Second operand 9 states and 243 transitions. [2024-05-12 13:00:25,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 251 transitions, 2752 flow [2024-05-12 13:00:25,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 251 transitions, 2563 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:25,991 INFO L231 Difference]: Finished difference. Result has 144 places, 187 transitions, 1843 flow [2024-05-12 13:00:25,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1843, PETRI_PLACES=144, PETRI_TRANSITIONS=187} [2024-05-12 13:00:25,991 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-05-12 13:00:25,991 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 187 transitions, 1843 flow [2024-05-12 13:00:25,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:25,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:25,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:25,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:00:25,992 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:25,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1760973965, now seen corresponding path program 6 times [2024-05-12 13:00:25,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:25,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147430649] [2024-05-12 13:00:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:25,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:27,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:27,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147430649] [2024-05-12 13:00:27,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147430649] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688792631] [2024-05-12 13:00:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:27,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:27,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:27,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:27,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 187 transitions, 1843 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:27,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:27,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:27,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:28,545 INFO L124 PetriNetUnfolderBase]: 5354/8297 cut-off events. [2024-05-12 13:00:28,546 INFO L125 PetriNetUnfolderBase]: For 165954/165957 co-relation queries the response was YES. [2024-05-12 13:00:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42013 conditions, 8297 events. 5354/8297 cut-off events. For 165954/165957 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 50660 event pairs, 1319 based on Foata normal form. 4/8160 useless extension candidates. Maximal degree in co-relation 41953. Up to 6411 conditions per place. [2024-05-12 13:00:28,619 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 149 selfloop transitions, 93 changer transitions 0/252 dead transitions. [2024-05-12 13:00:28,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 252 transitions, 2663 flow [2024-05-12 13:00:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-05-12 13:00:28,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-05-12 13:00:28,620 INFO L175 Difference]: Start difference. First operand has 144 places, 187 transitions, 1843 flow. Second operand 9 states and 243 transitions. [2024-05-12 13:00:28,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 252 transitions, 2663 flow [2024-05-12 13:00:28,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 252 transitions, 2418 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:28,840 INFO L231 Difference]: Finished difference. Result has 145 places, 187 transitions, 1792 flow [2024-05-12 13:00:28,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1792, PETRI_PLACES=145, PETRI_TRANSITIONS=187} [2024-05-12 13:00:28,841 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-05-12 13:00:28,841 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 187 transitions, 1792 flow [2024-05-12 13:00:28,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:28,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:28,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:00:28,841 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:28,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2057525769, now seen corresponding path program 1 times [2024-05-12 13:00:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:28,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961156490] [2024-05-12 13:00:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:29,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:29,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961156490] [2024-05-12 13:00:29,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961156490] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:29,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:29,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:00:29,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077334990] [2024-05-12 13:00:29,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:29,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:00:29,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:00:29,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:00:29,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:00:29,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 187 transitions, 1792 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:29,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:29,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:00:29,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:30,764 INFO L124 PetriNetUnfolderBase]: 4646/7607 cut-off events. [2024-05-12 13:00:30,764 INFO L125 PetriNetUnfolderBase]: For 168352/168411 co-relation queries the response was YES. [2024-05-12 13:00:30,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38126 conditions, 7607 events. 4646/7607 cut-off events. For 168352/168411 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 50394 event pairs, 1619 based on Foata normal form. 12/7431 useless extension candidates. Maximal degree in co-relation 38065. Up to 6487 conditions per place. [2024-05-12 13:00:30,831 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 158 selfloop transitions, 15 changer transitions 0/221 dead transitions. [2024-05-12 13:00:30,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 221 transitions, 2317 flow [2024-05-12 13:00:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:00:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:00:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-05-12 13:00:30,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 13:00:30,833 INFO L175 Difference]: Start difference. First operand has 145 places, 187 transitions, 1792 flow. Second operand 6 states and 156 transitions. [2024-05-12 13:00:30,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 221 transitions, 2317 flow [2024-05-12 13:00:31,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 221 transitions, 2115 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:31,051 INFO L231 Difference]: Finished difference. Result has 144 places, 196 transitions, 1747 flow [2024-05-12 13:00:31,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1747, PETRI_PLACES=144, PETRI_TRANSITIONS=196} [2024-05-12 13:00:31,051 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 88 predicate places. [2024-05-12 13:00:31,051 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 196 transitions, 1747 flow [2024-05-12 13:00:31,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:31,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:31,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:00:31,052 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:31,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1514056573, now seen corresponding path program 7 times [2024-05-12 13:00:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546385211] [2024-05-12 13:00:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546385211] [2024-05-12 13:00:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546385211] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:32,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:32,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:32,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778787229] [2024-05-12 13:00:32,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:32,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:32,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:32,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:32,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 196 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:32,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:32,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:32,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:33,561 INFO L124 PetriNetUnfolderBase]: 5417/8478 cut-off events. [2024-05-12 13:00:33,561 INFO L125 PetriNetUnfolderBase]: For 181756/181756 co-relation queries the response was YES. [2024-05-12 13:00:33,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43144 conditions, 8478 events. 5417/8478 cut-off events. For 181756/181756 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 52709 event pairs, 1445 based on Foata normal form. 4/8319 useless extension candidates. Maximal degree in co-relation 43081. Up to 6473 conditions per place. [2024-05-12 13:00:33,636 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 139 selfloop transitions, 109 changer transitions 0/258 dead transitions. [2024-05-12 13:00:33,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 258 transitions, 2627 flow [2024-05-12 13:00:33,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:33,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-05-12 13:00:33,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2024-05-12 13:00:33,637 INFO L175 Difference]: Start difference. First operand has 144 places, 196 transitions, 1747 flow. Second operand 9 states and 236 transitions. [2024-05-12 13:00:33,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 258 transitions, 2627 flow [2024-05-12 13:00:33,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 258 transitions, 2587 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-05-12 13:00:33,880 INFO L231 Difference]: Finished difference. Result has 150 places, 199 transitions, 1989 flow [2024-05-12 13:00:33,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=150, PETRI_TRANSITIONS=199} [2024-05-12 13:00:33,881 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-05-12 13:00:33,881 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 199 transitions, 1989 flow [2024-05-12 13:00:33,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:33,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:33,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:33,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:00:33,882 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:33,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -508721895, now seen corresponding path program 8 times [2024-05-12 13:00:33,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:33,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865233963] [2024-05-12 13:00:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:33,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:34,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865233963] [2024-05-12 13:00:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865233963] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:34,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768095462] [2024-05-12 13:00:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:34,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:34,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 199 transitions, 1989 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:34,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:34,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:34,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:36,500 INFO L124 PetriNetUnfolderBase]: 5519/8695 cut-off events. [2024-05-12 13:00:36,500 INFO L125 PetriNetUnfolderBase]: For 199749/199749 co-relation queries the response was YES. [2024-05-12 13:00:36,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45546 conditions, 8695 events. 5519/8695 cut-off events. For 199749/199749 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 54740 event pairs, 1460 based on Foata normal form. 4/8518 useless extension candidates. Maximal degree in co-relation 45482. Up to 6559 conditions per place. [2024-05-12 13:00:36,571 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 156 selfloop transitions, 105 changer transitions 0/271 dead transitions. [2024-05-12 13:00:36,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 271 transitions, 3133 flow [2024-05-12 13:00:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-05-12 13:00:36,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355555555555556 [2024-05-12 13:00:36,572 INFO L175 Difference]: Start difference. First operand has 150 places, 199 transitions, 1989 flow. Second operand 9 states and 241 transitions. [2024-05-12 13:00:36,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 271 transitions, 3133 flow [2024-05-12 13:00:36,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 271 transitions, 2915 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 13:00:36,789 INFO L231 Difference]: Finished difference. Result has 153 places, 205 transitions, 2113 flow [2024-05-12 13:00:36,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2113, PETRI_PLACES=153, PETRI_TRANSITIONS=205} [2024-05-12 13:00:36,790 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2024-05-12 13:00:36,790 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 205 transitions, 2113 flow [2024-05-12 13:00:36,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:36,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:36,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:36,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:00:36,791 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:36,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:36,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1257556063, now seen corresponding path program 9 times [2024-05-12 13:00:36,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:36,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003381124] [2024-05-12 13:00:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:36,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:37,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:37,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003381124] [2024-05-12 13:00:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003381124] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:37,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924443366] [2024-05-12 13:00:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:37,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:37,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:37,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 205 transitions, 2113 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:37,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:37,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:37,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:39,443 INFO L124 PetriNetUnfolderBase]: 5509/8685 cut-off events. [2024-05-12 13:00:39,443 INFO L125 PetriNetUnfolderBase]: For 205310/205310 co-relation queries the response was YES. [2024-05-12 13:00:39,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45328 conditions, 8685 events. 5509/8685 cut-off events. For 205310/205310 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 54694 event pairs, 1474 based on Foata normal form. 4/8507 useless extension candidates. Maximal degree in co-relation 45263. Up to 6551 conditions per place. [2024-05-12 13:00:39,535 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 153 selfloop transitions, 104 changer transitions 0/267 dead transitions. [2024-05-12 13:00:39,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 267 transitions, 2979 flow [2024-05-12 13:00:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-05-12 13:00:39,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-05-12 13:00:39,543 INFO L175 Difference]: Start difference. First operand has 153 places, 205 transitions, 2113 flow. Second operand 9 states and 240 transitions. [2024-05-12 13:00:39,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 267 transitions, 2979 flow [2024-05-12 13:00:39,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 267 transitions, 2578 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:39,909 INFO L231 Difference]: Finished difference. Result has 154 places, 205 transitions, 1928 flow [2024-05-12 13:00:39,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1928, PETRI_PLACES=154, PETRI_TRANSITIONS=205} [2024-05-12 13:00:39,911 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-05-12 13:00:39,911 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 205 transitions, 1928 flow [2024-05-12 13:00:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:39,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:39,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:39,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:00:39,912 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:39,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1257348673, now seen corresponding path program 10 times [2024-05-12 13:00:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:39,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363949423] [2024-05-12 13:00:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:40,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:40,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363949423] [2024-05-12 13:00:40,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363949423] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:40,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:40,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847612450] [2024-05-12 13:00:40,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:40,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:40,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:40,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 205 transitions, 1928 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:40,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:40,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:40,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:42,602 INFO L124 PetriNetUnfolderBase]: 5499/8667 cut-off events. [2024-05-12 13:00:42,603 INFO L125 PetriNetUnfolderBase]: For 203795/203795 co-relation queries the response was YES. [2024-05-12 13:00:42,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44830 conditions, 8667 events. 5499/8667 cut-off events. For 203795/203795 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 54469 event pairs, 1458 based on Foata normal form. 4/8490 useless extension candidates. Maximal degree in co-relation 44764. Up to 6543 conditions per place. [2024-05-12 13:00:42,696 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 150 selfloop transitions, 107 changer transitions 0/267 dead transitions. [2024-05-12 13:00:42,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 267 transitions, 2664 flow [2024-05-12 13:00:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-05-12 13:00:42,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2024-05-12 13:00:42,706 INFO L175 Difference]: Start difference. First operand has 154 places, 205 transitions, 1928 flow. Second operand 9 states and 236 transitions. [2024-05-12 13:00:42,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 267 transitions, 2664 flow [2024-05-12 13:00:42,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 267 transitions, 2341 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-05-12 13:00:42,969 INFO L231 Difference]: Finished difference. Result has 154 places, 205 transitions, 1827 flow [2024-05-12 13:00:42,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1827, PETRI_PLACES=154, PETRI_TRANSITIONS=205} [2024-05-12 13:00:42,979 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 98 predicate places. [2024-05-12 13:00:42,979 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 205 transitions, 1827 flow [2024-05-12 13:00:42,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:42,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:42,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:42,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:00:42,980 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:42,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -714293289, now seen corresponding path program 2 times [2024-05-12 13:00:42,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:42,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659736398] [2024-05-12 13:00:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659736398] [2024-05-12 13:00:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659736398] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:43,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:00:43,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23653164] [2024-05-12 13:00:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:00:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:00:43,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:00:43,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:00:43,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 205 transitions, 1827 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:43,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:43,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:00:43,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:45,055 INFO L124 PetriNetUnfolderBase]: 4735/7771 cut-off events. [2024-05-12 13:00:45,056 INFO L125 PetriNetUnfolderBase]: For 204275/204351 co-relation queries the response was YES. [2024-05-12 13:00:45,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40425 conditions, 7771 events. 4735/7771 cut-off events. For 204275/204351 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 51623 event pairs, 1634 based on Foata normal form. 21/7582 useless extension candidates. Maximal degree in co-relation 40358. Up to 6590 conditions per place. [2024-05-12 13:00:45,115 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 162 selfloop transitions, 20 changer transitions 0/230 dead transitions. [2024-05-12 13:00:45,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 230 transitions, 2301 flow [2024-05-12 13:00:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:00:45,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:00:45,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-05-12 13:00:45,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-05-12 13:00:45,116 INFO L175 Difference]: Start difference. First operand has 154 places, 205 transitions, 1827 flow. Second operand 6 states and 153 transitions. [2024-05-12 13:00:45,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 230 transitions, 2301 flow [2024-05-12 13:00:45,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 230 transitions, 2077 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:45,354 INFO L231 Difference]: Finished difference. Result has 152 places, 208 transitions, 1687 flow [2024-05-12 13:00:45,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1603, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1687, PETRI_PLACES=152, PETRI_TRANSITIONS=208} [2024-05-12 13:00:45,355 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-05-12 13:00:45,355 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 208 transitions, 1687 flow [2024-05-12 13:00:45,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:45,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:45,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:45,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:00:45,356 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:45,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2050852585, now seen corresponding path program 1 times [2024-05-12 13:00:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673726285] [2024-05-12 13:00:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:45,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673726285] [2024-05-12 13:00:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673726285] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:00:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859206498] [2024-05-12 13:00:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:00:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:00:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:00:46,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:00:46,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 208 transitions, 1687 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:46,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:46,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:00:46,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:47,247 INFO L124 PetriNetUnfolderBase]: 4613/7578 cut-off events. [2024-05-12 13:00:47,248 INFO L125 PetriNetUnfolderBase]: For 184123/184178 co-relation queries the response was YES. [2024-05-12 13:00:47,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38417 conditions, 7578 events. 4613/7578 cut-off events. For 184123/184178 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49905 event pairs, 1509 based on Foata normal form. 56/7479 useless extension candidates. Maximal degree in co-relation 38349. Up to 6472 conditions per place. [2024-05-12 13:00:47,310 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 197 selfloop transitions, 13 changer transitions 0/235 dead transitions. [2024-05-12 13:00:47,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 235 transitions, 2237 flow [2024-05-12 13:00:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:00:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:00:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-05-12 13:00:47,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-05-12 13:00:47,313 INFO L175 Difference]: Start difference. First operand has 152 places, 208 transitions, 1687 flow. Second operand 6 states and 153 transitions. [2024-05-12 13:00:47,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 235 transitions, 2237 flow [2024-05-12 13:00:47,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 235 transitions, 2175 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:47,564 INFO L231 Difference]: Finished difference. Result has 155 places, 215 transitions, 1744 flow [2024-05-12 13:00:47,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1744, PETRI_PLACES=155, PETRI_TRANSITIONS=215} [2024-05-12 13:00:47,565 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 99 predicate places. [2024-05-12 13:00:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 215 transitions, 1744 flow [2024-05-12 13:00:47,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:47,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:47,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:47,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:00:47,565 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:47,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2044156585, now seen corresponding path program 2 times [2024-05-12 13:00:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344320397] [2024-05-12 13:00:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:47,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:48,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:48,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344320397] [2024-05-12 13:00:48,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344320397] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:48,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:48,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:00:48,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809270279] [2024-05-12 13:00:48,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:48,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:00:48,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:00:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:00:48,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:00:48,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 215 transitions, 1744 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:48,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:48,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:00:48,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:49,481 INFO L124 PetriNetUnfolderBase]: 4615/7583 cut-off events. [2024-05-12 13:00:49,481 INFO L125 PetriNetUnfolderBase]: For 192945/193006 co-relation queries the response was YES. [2024-05-12 13:00:49,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39457 conditions, 7583 events. 4615/7583 cut-off events. For 192945/193006 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49979 event pairs, 1511 based on Foata normal form. 60/7487 useless extension candidates. Maximal degree in co-relation 39387. Up to 6455 conditions per place. [2024-05-12 13:00:49,552 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 194 selfloop transitions, 18 changer transitions 0/237 dead transitions. [2024-05-12 13:00:49,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 237 transitions, 2272 flow [2024-05-12 13:00:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:00:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:00:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-05-12 13:00:49,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-05-12 13:00:49,554 INFO L175 Difference]: Start difference. First operand has 155 places, 215 transitions, 1744 flow. Second operand 6 states and 153 transitions. [2024-05-12 13:00:49,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 237 transitions, 2272 flow [2024-05-12 13:00:49,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 237 transitions, 2223 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-05-12 13:00:49,795 INFO L231 Difference]: Finished difference. Result has 158 places, 218 transitions, 1783 flow [2024-05-12 13:00:49,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1783, PETRI_PLACES=158, PETRI_TRANSITIONS=218} [2024-05-12 13:00:49,796 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 102 predicate places. [2024-05-12 13:00:49,796 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 218 transitions, 1783 flow [2024-05-12 13:00:49,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:49,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:49,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:49,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:00:49,797 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:49,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:49,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1572217359, now seen corresponding path program 1 times [2024-05-12 13:00:49,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:49,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051492489] [2024-05-12 13:00:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:49,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:50,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:50,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051492489] [2024-05-12 13:00:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051492489] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:50,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:50,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469108008] [2024-05-12 13:00:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:50,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:50,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:50,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:50,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 218 transitions, 1783 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:50,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:50,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:50,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:52,601 INFO L124 PetriNetUnfolderBase]: 5602/8864 cut-off events. [2024-05-12 13:00:52,601 INFO L125 PetriNetUnfolderBase]: For 247132/247138 co-relation queries the response was YES. [2024-05-12 13:00:52,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48168 conditions, 8864 events. 5602/8864 cut-off events. For 247132/247138 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56490 event pairs, 1361 based on Foata normal form. 10/8707 useless extension candidates. Maximal degree in co-relation 48097. Up to 7699 conditions per place. [2024-05-12 13:00:52,699 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 247 selfloop transitions, 38 changer transitions 0/295 dead transitions. [2024-05-12 13:00:52,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 295 transitions, 2851 flow [2024-05-12 13:00:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:00:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:00:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-05-12 13:00:52,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514 [2024-05-12 13:00:52,720 INFO L175 Difference]: Start difference. First operand has 158 places, 218 transitions, 1783 flow. Second operand 10 states and 257 transitions. [2024-05-12 13:00:52,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 295 transitions, 2851 flow [2024-05-12 13:00:53,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 295 transitions, 2785 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-05-12 13:00:53,041 INFO L231 Difference]: Finished difference. Result has 164 places, 222 transitions, 1900 flow [2024-05-12 13:00:53,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1900, PETRI_PLACES=164, PETRI_TRANSITIONS=222} [2024-05-12 13:00:53,043 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 108 predicate places. [2024-05-12 13:00:53,043 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 222 transitions, 1900 flow [2024-05-12 13:00:53,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:53,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:53,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:53,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:00:53,047 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:53,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash 773734177, now seen corresponding path program 2 times [2024-05-12 13:00:53,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:53,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303693406] [2024-05-12 13:00:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:53,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303693406] [2024-05-12 13:00:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303693406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053002065] [2024-05-12 13:00:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:54,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:54,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:54,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:54,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 222 transitions, 1900 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:54,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:54,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:54,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:55,786 INFO L124 PetriNetUnfolderBase]: 5594/8836 cut-off events. [2024-05-12 13:00:55,787 INFO L125 PetriNetUnfolderBase]: For 257338/257344 co-relation queries the response was YES. [2024-05-12 13:00:55,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48685 conditions, 8836 events. 5594/8836 cut-off events. For 257338/257344 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 56238 event pairs, 1682 based on Foata normal form. 10/8683 useless extension candidates. Maximal degree in co-relation 48613. Up to 7782 conditions per place. [2024-05-12 13:00:55,858 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 240 selfloop transitions, 34 changer transitions 0/284 dead transitions. [2024-05-12 13:00:55,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 284 transitions, 2664 flow [2024-05-12 13:00:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:00:55,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-05-12 13:00:55,860 INFO L175 Difference]: Start difference. First operand has 164 places, 222 transitions, 1900 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:00:55,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 284 transitions, 2664 flow [2024-05-12 13:00:56,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 284 transitions, 2535 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-05-12 13:00:56,117 INFO L231 Difference]: Finished difference. Result has 167 places, 222 transitions, 1846 flow [2024-05-12 13:00:56,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1846, PETRI_PLACES=167, PETRI_TRANSITIONS=222} [2024-05-12 13:00:56,118 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 111 predicate places. [2024-05-12 13:00:56,118 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 222 transitions, 1846 flow [2024-05-12 13:00:56,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:56,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:56,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:56,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:00:56,119 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:56,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1567035953, now seen corresponding path program 3 times [2024-05-12 13:00:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:56,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275322197] [2024-05-12 13:00:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:57,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275322197] [2024-05-12 13:00:57,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275322197] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:57,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:57,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:00:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803454113] [2024-05-12 13:00:57,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:57,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:00:57,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:00:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:00:57,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:00:57,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 222 transitions, 1846 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:57,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:57,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:00:57,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:00:58,681 INFO L124 PetriNetUnfolderBase]: 5631/8888 cut-off events. [2024-05-12 13:00:58,681 INFO L125 PetriNetUnfolderBase]: For 268010/268022 co-relation queries the response was YES. [2024-05-12 13:00:58,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48978 conditions, 8888 events. 5631/8888 cut-off events. For 268010/268022 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56564 event pairs, 1662 based on Foata normal form. 14/8740 useless extension candidates. Maximal degree in co-relation 48904. Up to 7537 conditions per place. [2024-05-12 13:00:58,765 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 200 selfloop transitions, 75 changer transitions 0/285 dead transitions. [2024-05-12 13:00:58,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 285 transitions, 2666 flow [2024-05-12 13:00:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:00:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:00:58,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-05-12 13:00:58,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-05-12 13:00:58,767 INFO L175 Difference]: Start difference. First operand has 167 places, 222 transitions, 1846 flow. Second operand 9 states and 232 transitions. [2024-05-12 13:00:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 285 transitions, 2666 flow [2024-05-12 13:00:59,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 285 transitions, 2593 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 13:00:59,060 INFO L231 Difference]: Finished difference. Result has 168 places, 224 transitions, 1986 flow [2024-05-12 13:00:59,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1986, PETRI_PLACES=168, PETRI_TRANSITIONS=224} [2024-05-12 13:00:59,061 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 112 predicate places. [2024-05-12 13:00:59,061 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 224 transitions, 1986 flow [2024-05-12 13:00:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:00:59,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:00:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:00:59,061 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:00:59,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:00:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash -130014405, now seen corresponding path program 1 times [2024-05-12 13:00:59,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:00:59,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266412635] [2024-05-12 13:00:59,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:00:59,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:00:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:00:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:00:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:00:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266412635] [2024-05-12 13:00:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266412635] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:00:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:00:59,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:00:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277573513] [2024-05-12 13:00:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:00:59,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:00:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:00:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:00:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:00:59,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:00:59,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 224 transitions, 1986 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:00:59,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:00:59,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:00:59,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:01,064 INFO L124 PetriNetUnfolderBase]: 4885/8025 cut-off events. [2024-05-12 13:01:01,064 INFO L125 PetriNetUnfolderBase]: For 270989/271010 co-relation queries the response was YES. [2024-05-12 13:01:01,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44896 conditions, 8025 events. 4885/8025 cut-off events. For 270989/271010 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 53528 event pairs, 1591 based on Foata normal form. 8/7820 useless extension candidates. Maximal degree in co-relation 44821. Up to 6710 conditions per place. [2024-05-12 13:01:01,146 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 194 selfloop transitions, 24 changer transitions 0/272 dead transitions. [2024-05-12 13:01:01,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 272 transitions, 2689 flow [2024-05-12 13:01:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:01,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-05-12 13:01:01,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257142857142857 [2024-05-12 13:01:01,148 INFO L175 Difference]: Start difference. First operand has 168 places, 224 transitions, 1986 flow. Second operand 7 states and 184 transitions. [2024-05-12 13:01:01,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 272 transitions, 2689 flow [2024-05-12 13:01:01,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 272 transitions, 2478 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-05-12 13:01:01,476 INFO L231 Difference]: Finished difference. Result has 169 places, 236 transitions, 2006 flow [2024-05-12 13:01:01,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1791, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2006, PETRI_PLACES=169, PETRI_TRANSITIONS=236} [2024-05-12 13:01:01,477 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 113 predicate places. [2024-05-12 13:01:01,477 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 236 transitions, 2006 flow [2024-05-12 13:01:01,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:01,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:01,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:01,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:01:01,478 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:01,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1401396819, now seen corresponding path program 4 times [2024-05-12 13:01:01,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:01,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363910699] [2024-05-12 13:01:01,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:01,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:02,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:02,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363910699] [2024-05-12 13:01:02,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363910699] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:02,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:02,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:02,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106258103] [2024-05-12 13:01:02,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:02,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:02,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:02,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:02,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:02,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 236 transitions, 2006 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:02,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:02,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:02,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:04,000 INFO L124 PetriNetUnfolderBase]: 5702/9020 cut-off events. [2024-05-12 13:01:04,000 INFO L125 PetriNetUnfolderBase]: For 296279/296285 co-relation queries the response was YES. [2024-05-12 13:01:04,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51392 conditions, 9020 events. 5702/9020 cut-off events. For 296279/296285 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 57677 event pairs, 1669 based on Foata normal form. 8/8857 useless extension candidates. Maximal degree in co-relation 51315. Up to 7638 conditions per place. [2024-05-12 13:01:04,087 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 207 selfloop transitions, 79 changer transitions 0/296 dead transitions. [2024-05-12 13:01:04,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 296 transitions, 2850 flow [2024-05-12 13:01:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:04,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:01:04,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-05-12 13:01:04,089 INFO L175 Difference]: Start difference. First operand has 169 places, 236 transitions, 2006 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:01:04,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 296 transitions, 2850 flow [2024-05-12 13:01:04,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 296 transitions, 2778 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-05-12 13:01:04,400 INFO L231 Difference]: Finished difference. Result has 174 places, 238 transitions, 2159 flow [2024-05-12 13:01:04,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2159, PETRI_PLACES=174, PETRI_TRANSITIONS=238} [2024-05-12 13:01:04,400 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 118 predicate places. [2024-05-12 13:01:04,401 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 238 transitions, 2159 flow [2024-05-12 13:01:04,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:04,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:04,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:04,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:01:04,401 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:04,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1394716691, now seen corresponding path program 1 times [2024-05-12 13:01:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454985061] [2024-05-12 13:01:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454985061] [2024-05-12 13:01:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454985061] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:05,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:05,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:05,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71109394] [2024-05-12 13:01:05,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:05,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:05,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:05,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 238 transitions, 2159 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:05,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:05,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:05,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:07,056 INFO L124 PetriNetUnfolderBase]: 5739/9103 cut-off events. [2024-05-12 13:01:07,057 INFO L125 PetriNetUnfolderBase]: For 314214/314227 co-relation queries the response was YES. [2024-05-12 13:01:07,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52690 conditions, 9103 events. 5739/9103 cut-off events. For 314214/314227 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58449 event pairs, 1591 based on Foata normal form. 14/8939 useless extension candidates. Maximal degree in co-relation 52612. Up to 7869 conditions per place. [2024-05-12 13:01:07,149 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 244 selfloop transitions, 49 changer transitions 0/303 dead transitions. [2024-05-12 13:01:07,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 303 transitions, 3045 flow [2024-05-12 13:01:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:07,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:01:07,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-05-12 13:01:07,151 INFO L175 Difference]: Start difference. First operand has 174 places, 238 transitions, 2159 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:01:07,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 303 transitions, 3045 flow [2024-05-12 13:01:07,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 303 transitions, 2838 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:01:07,613 INFO L231 Difference]: Finished difference. Result has 177 places, 243 transitions, 2136 flow [2024-05-12 13:01:07,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2136, PETRI_PLACES=177, PETRI_TRANSITIONS=243} [2024-05-12 13:01:07,614 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 121 predicate places. [2024-05-12 13:01:07,614 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 243 transitions, 2136 flow [2024-05-12 13:01:07,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:07,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:07,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:07,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:01:07,615 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:07,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash 641211497, now seen corresponding path program 2 times [2024-05-12 13:01:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627093762] [2024-05-12 13:01:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:08,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:08,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627093762] [2024-05-12 13:01:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627093762] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:08,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:08,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:08,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787795362] [2024-05-12 13:01:08,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:08,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:08,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:08,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:08,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:08,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:08,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 243 transitions, 2136 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:08,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:08,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:09,893 INFO L124 PetriNetUnfolderBase]: 4970/8187 cut-off events. [2024-05-12 13:01:09,893 INFO L125 PetriNetUnfolderBase]: For 311219/311240 co-relation queries the response was YES. [2024-05-12 13:01:09,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48059 conditions, 8187 events. 4970/8187 cut-off events. For 311219/311240 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 55011 event pairs, 1558 based on Foata normal form. 5/7974 useless extension candidates. Maximal degree in co-relation 47979. Up to 6801 conditions per place. [2024-05-12 13:01:10,005 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 193 selfloop transitions, 28 changer transitions 0/276 dead transitions. [2024-05-12 13:01:10,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 276 transitions, 2734 flow [2024-05-12 13:01:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:10,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-05-12 13:01:10,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-05-12 13:01:10,007 INFO L175 Difference]: Start difference. First operand has 177 places, 243 transitions, 2136 flow. Second operand 7 states and 181 transitions. [2024-05-12 13:01:10,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 276 transitions, 2734 flow [2024-05-12 13:01:10,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 276 transitions, 2593 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-05-12 13:01:10,663 INFO L231 Difference]: Finished difference. Result has 178 places, 246 transitions, 2111 flow [2024-05-12 13:01:10,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2111, PETRI_PLACES=178, PETRI_TRANSITIONS=246} [2024-05-12 13:01:10,664 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 122 predicate places. [2024-05-12 13:01:10,664 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 246 transitions, 2111 flow [2024-05-12 13:01:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:10,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:10,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:10,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:01:10,673 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:10,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash 265546538, now seen corresponding path program 1 times [2024-05-12 13:01:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:10,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226778631] [2024-05-12 13:01:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:11,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:11,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226778631] [2024-05-12 13:01:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226778631] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:11,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:11,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060732607] [2024-05-12 13:01:11,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:11,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:12,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:12,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 246 transitions, 2111 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:12,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:12,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:12,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:13,216 INFO L124 PetriNetUnfolderBase]: 4982/8198 cut-off events. [2024-05-12 13:01:13,216 INFO L125 PetriNetUnfolderBase]: For 323782/323815 co-relation queries the response was YES. [2024-05-12 13:01:13,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48654 conditions, 8198 events. 4982/8198 cut-off events. For 323782/323815 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 55008 event pairs, 1552 based on Foata normal form. 13/7992 useless extension candidates. Maximal degree in co-relation 48573. Up to 6894 conditions per place. [2024-05-12 13:01:13,307 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 206 selfloop transitions, 18 changer transitions 0/279 dead transitions. [2024-05-12 13:01:13,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 279 transitions, 2707 flow [2024-05-12 13:01:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-05-12 13:01:13,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-05-12 13:01:13,308 INFO L175 Difference]: Start difference. First operand has 178 places, 246 transitions, 2111 flow. Second operand 7 states and 179 transitions. [2024-05-12 13:01:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 279 transitions, 2707 flow [2024-05-12 13:01:13,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 279 transitions, 2613 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:13,822 INFO L231 Difference]: Finished difference. Result has 180 places, 249 transitions, 2103 flow [2024-05-12 13:01:13,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2103, PETRI_PLACES=180, PETRI_TRANSITIONS=249} [2024-05-12 13:01:13,823 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 124 predicate places. [2024-05-12 13:01:13,823 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 249 transitions, 2103 flow [2024-05-12 13:01:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:13,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:13,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:01:13,823 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:13,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1842615375, now seen corresponding path program 5 times [2024-05-12 13:01:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:13,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326020333] [2024-05-12 13:01:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326020333] [2024-05-12 13:01:14,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326020333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:14,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:14,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:14,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606247818] [2024-05-12 13:01:14,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:14,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:14,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:14,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:14,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:14,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:14,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 249 transitions, 2103 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:14,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:14,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:14,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:16,551 INFO L124 PetriNetUnfolderBase]: 5782/9143 cut-off events. [2024-05-12 13:01:16,551 INFO L125 PetriNetUnfolderBase]: For 346098/346098 co-relation queries the response was YES. [2024-05-12 13:01:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54710 conditions, 9143 events. 5782/9143 cut-off events. For 346098/346098 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 58507 event pairs, 1624 based on Foata normal form. 4/8968 useless extension candidates. Maximal degree in co-relation 54628. Up to 7750 conditions per place. [2024-05-12 13:01:16,683 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 217 selfloop transitions, 79 changer transitions 0/306 dead transitions. [2024-05-12 13:01:16,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 306 transitions, 2967 flow [2024-05-12 13:01:16,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:16,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-05-12 13:01:16,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2024-05-12 13:01:16,687 INFO L175 Difference]: Start difference. First operand has 180 places, 249 transitions, 2103 flow. Second operand 9 states and 227 transitions. [2024-05-12 13:01:16,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 306 transitions, 2967 flow [2024-05-12 13:01:17,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 306 transitions, 2903 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:17,219 INFO L231 Difference]: Finished difference. Result has 184 places, 251 transitions, 2270 flow [2024-05-12 13:01:17,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2270, PETRI_PLACES=184, PETRI_TRANSITIONS=251} [2024-05-12 13:01:17,220 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 128 predicate places. [2024-05-12 13:01:17,220 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 251 transitions, 2270 flow [2024-05-12 13:01:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:17,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:17,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:17,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:01:17,221 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:17,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1415993441, now seen corresponding path program 2 times [2024-05-12 13:01:17,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:17,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093873256] [2024-05-12 13:01:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:18,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:18,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093873256] [2024-05-12 13:01:18,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093873256] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:18,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:18,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:18,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666022743] [2024-05-12 13:01:18,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:18,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:18,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:18,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:18,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 251 transitions, 2270 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:18,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:18,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:18,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:20,210 INFO L124 PetriNetUnfolderBase]: 5819/9201 cut-off events. [2024-05-12 13:01:20,211 INFO L125 PetriNetUnfolderBase]: For 364555/364587 co-relation queries the response was YES. [2024-05-12 13:01:20,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56122 conditions, 9201 events. 5819/9201 cut-off events. For 364555/364587 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 58890 event pairs, 1590 based on Foata normal form. 28/9057 useless extension candidates. Maximal degree in co-relation 56039. Up to 7981 conditions per place. [2024-05-12 13:01:20,292 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 254 selfloop transitions, 51 changer transitions 0/315 dead transitions. [2024-05-12 13:01:20,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 315 transitions, 3188 flow [2024-05-12 13:01:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-05-12 13:01:20,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044444444444445 [2024-05-12 13:01:20,294 INFO L175 Difference]: Start difference. First operand has 184 places, 251 transitions, 2270 flow. Second operand 9 states and 227 transitions. [2024-05-12 13:01:20,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 315 transitions, 3188 flow [2024-05-12 13:01:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 315 transitions, 2975 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-05-12 13:01:20,597 INFO L231 Difference]: Finished difference. Result has 187 places, 256 transitions, 2255 flow [2024-05-12 13:01:20,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2255, PETRI_PLACES=187, PETRI_TRANSITIONS=256} [2024-05-12 13:01:20,597 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 131 predicate places. [2024-05-12 13:01:20,597 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 256 transitions, 2255 flow [2024-05-12 13:01:20,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:20,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:20,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:20,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:01:20,598 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:20,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash 785618229, now seen corresponding path program 3 times [2024-05-12 13:01:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:20,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581225975] [2024-05-12 13:01:20,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:20,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:21,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:21,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581225975] [2024-05-12 13:01:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581225975] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:21,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:21,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:21,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572672558] [2024-05-12 13:01:21,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:21,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:21,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:21,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:21,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:21,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 256 transitions, 2255 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:21,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:21,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:21,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:23,598 INFO L124 PetriNetUnfolderBase]: 5879/9386 cut-off events. [2024-05-12 13:01:23,598 INFO L125 PetriNetUnfolderBase]: For 381386/381410 co-relation queries the response was YES. [2024-05-12 13:01:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57472 conditions, 9386 events. 5879/9386 cut-off events. For 381386/381410 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 61136 event pairs, 2224 based on Foata normal form. 20/9220 useless extension candidates. Maximal degree in co-relation 57387. Up to 8060 conditions per place. [2024-05-12 13:01:23,720 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 249 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-05-12 13:01:23,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 322 transitions, 3234 flow [2024-05-12 13:01:23,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:01:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:01:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-05-12 13:01:23,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-05-12 13:01:23,722 INFO L175 Difference]: Start difference. First operand has 187 places, 256 transitions, 2255 flow. Second operand 10 states and 240 transitions. [2024-05-12 13:01:23,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 322 transitions, 3234 flow [2024-05-12 13:01:24,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 322 transitions, 3067 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 13:01:24,297 INFO L231 Difference]: Finished difference. Result has 193 places, 267 transitions, 2393 flow [2024-05-12 13:01:24,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2393, PETRI_PLACES=193, PETRI_TRANSITIONS=267} [2024-05-12 13:01:24,301 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 137 predicate places. [2024-05-12 13:01:24,301 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 267 transitions, 2393 flow [2024-05-12 13:01:24,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:24,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:24,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:24,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:01:24,302 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:24,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:24,302 INFO L85 PathProgramCache]: Analyzing trace with hash 777574659, now seen corresponding path program 4 times [2024-05-12 13:01:24,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:24,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727021745] [2024-05-12 13:01:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:25,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727021745] [2024-05-12 13:01:25,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727021745] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:25,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:25,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632960497] [2024-05-12 13:01:25,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:25,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:25,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:25,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:25,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:25,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 267 transitions, 2393 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:25,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:25,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:25,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:27,608 INFO L124 PetriNetUnfolderBase]: 5916/9387 cut-off events. [2024-05-12 13:01:27,608 INFO L125 PetriNetUnfolderBase]: For 398240/398264 co-relation queries the response was YES. [2024-05-12 13:01:27,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58793 conditions, 9387 events. 5916/9387 cut-off events. For 398240/398264 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 60531 event pairs, 1627 based on Foata normal form. 20/9229 useless extension candidates. Maximal degree in co-relation 58705. Up to 8115 conditions per place. [2024-05-12 13:01:27,741 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 254 selfloop transitions, 59 changer transitions 0/323 dead transitions. [2024-05-12 13:01:27,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 323 transitions, 3287 flow [2024-05-12 13:01:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-05-12 13:01:27,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2024-05-12 13:01:27,742 INFO L175 Difference]: Start difference. First operand has 193 places, 267 transitions, 2393 flow. Second operand 9 states and 226 transitions. [2024-05-12 13:01:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 323 transitions, 3287 flow [2024-05-12 13:01:28,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 323 transitions, 3155 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-05-12 13:01:28,325 INFO L231 Difference]: Finished difference. Result has 199 places, 269 transitions, 2456 flow [2024-05-12 13:01:28,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2456, PETRI_PLACES=199, PETRI_TRANSITIONS=269} [2024-05-12 13:01:28,326 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2024-05-12 13:01:28,326 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 269 transitions, 2456 flow [2024-05-12 13:01:28,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:28,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:28,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:28,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:01:28,327 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:28,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash -13064211, now seen corresponding path program 5 times [2024-05-12 13:01:28,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:28,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143788968] [2024-05-12 13:01:28,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:28,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:29,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:29,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143788968] [2024-05-12 13:01:29,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143788968] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:29,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:29,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:01:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313357876] [2024-05-12 13:01:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:29,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:01:29,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:01:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:01:29,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:01:29,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 269 transitions, 2456 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:29,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:29,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:01:29,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:31,385 INFO L124 PetriNetUnfolderBase]: 5908/9351 cut-off events. [2024-05-12 13:01:31,385 INFO L125 PetriNetUnfolderBase]: For 403080/403104 co-relation queries the response was YES. [2024-05-12 13:01:31,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57529 conditions, 9351 events. 5908/9351 cut-off events. For 403080/403104 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 60101 event pairs, 1486 based on Foata normal form. 20/9197 useless extension candidates. Maximal degree in co-relation 57439. Up to 7924 conditions per place. [2024-05-12 13:01:31,485 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 246 selfloop transitions, 70 changer transitions 0/326 dead transitions. [2024-05-12 13:01:31,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 326 transitions, 3362 flow [2024-05-12 13:01:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:01:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:01:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-05-12 13:01:31,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022222222222222 [2024-05-12 13:01:31,487 INFO L175 Difference]: Start difference. First operand has 199 places, 269 transitions, 2456 flow. Second operand 9 states and 226 transitions. [2024-05-12 13:01:31,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 326 transitions, 3362 flow [2024-05-12 13:01:31,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 326 transitions, 3150 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-05-12 13:01:31,989 INFO L231 Difference]: Finished difference. Result has 198 places, 271 transitions, 2465 flow [2024-05-12 13:01:31,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2465, PETRI_PLACES=198, PETRI_TRANSITIONS=271} [2024-05-12 13:01:31,989 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 142 predicate places. [2024-05-12 13:01:31,989 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 271 transitions, 2465 flow [2024-05-12 13:01:31,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:31,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:31,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:31,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:01:31,990 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:31,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1055946392, now seen corresponding path program 2 times [2024-05-12 13:01:31,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:31,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993783212] [2024-05-12 13:01:31,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:31,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:33,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:33,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993783212] [2024-05-12 13:01:33,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993783212] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:33,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:33,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82905422] [2024-05-12 13:01:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:33,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:33,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:33,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 271 transitions, 2465 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:33,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:33,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:33,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:34,766 INFO L124 PetriNetUnfolderBase]: 5123/8612 cut-off events. [2024-05-12 13:01:34,767 INFO L125 PetriNetUnfolderBase]: For 401580/401631 co-relation queries the response was YES. [2024-05-12 13:01:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52615 conditions, 8612 events. 5123/8612 cut-off events. For 401580/401631 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 59524 event pairs, 1556 based on Foata normal form. 23/8367 useless extension candidates. Maximal degree in co-relation 52527. Up to 7047 conditions per place. [2024-05-12 13:01:34,883 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 218 selfloop transitions, 31 changer transitions 0/305 dead transitions. [2024-05-12 13:01:34,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 305 transitions, 3281 flow [2024-05-12 13:01:34,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:01:34,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-05-12 13:01:34,884 INFO L175 Difference]: Start difference. First operand has 198 places, 271 transitions, 2465 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:01:34,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 305 transitions, 3281 flow [2024-05-12 13:01:35,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 305 transitions, 3078 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-05-12 13:01:35,453 INFO L231 Difference]: Finished difference. Result has 199 places, 279 transitions, 2463 flow [2024-05-12 13:01:35,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2463, PETRI_PLACES=199, PETRI_TRANSITIONS=279} [2024-05-12 13:01:35,454 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 143 predicate places. [2024-05-12 13:01:35,454 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 279 transitions, 2463 flow [2024-05-12 13:01:35,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:35,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:35,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:35,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:01:35,455 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:35,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:35,455 INFO L85 PathProgramCache]: Analyzing trace with hash -668254583, now seen corresponding path program 3 times [2024-05-12 13:01:35,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940332622] [2024-05-12 13:01:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:36,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:36,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940332622] [2024-05-12 13:01:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940332622] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:36,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039973824] [2024-05-12 13:01:36,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:36,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:36,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 279 transitions, 2463 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:36,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:36,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:36,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:37,732 INFO L124 PetriNetUnfolderBase]: 5132/8598 cut-off events. [2024-05-12 13:01:37,732 INFO L125 PetriNetUnfolderBase]: For 411418/411433 co-relation queries the response was YES. [2024-05-12 13:01:37,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52810 conditions, 8598 events. 5132/8598 cut-off events. For 411418/411433 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 59137 event pairs, 1555 based on Foata normal form. 7/8325 useless extension candidates. Maximal degree in co-relation 52720. Up to 7005 conditions per place. [2024-05-12 13:01:37,847 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 217 selfloop transitions, 35 changer transitions 0/308 dead transitions. [2024-05-12 13:01:37,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 308 transitions, 3127 flow [2024-05-12 13:01:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:01:37,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085714285714286 [2024-05-12 13:01:37,848 INFO L175 Difference]: Start difference. First operand has 199 places, 279 transitions, 2463 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:01:37,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 308 transitions, 3127 flow [2024-05-12 13:01:38,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 308 transitions, 3053 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-05-12 13:01:38,490 INFO L231 Difference]: Finished difference. Result has 203 places, 282 transitions, 2529 flow [2024-05-12 13:01:38,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2529, PETRI_PLACES=203, PETRI_TRANSITIONS=282} [2024-05-12 13:01:38,490 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2024-05-12 13:01:38,490 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 282 transitions, 2529 flow [2024-05-12 13:01:38,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:38,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:38,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:38,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:01:38,491 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:38,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash -668254118, now seen corresponding path program 3 times [2024-05-12 13:01:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808330300] [2024-05-12 13:01:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:39,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:39,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808330300] [2024-05-12 13:01:39,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808330300] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:39,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:39,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:39,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497884078] [2024-05-12 13:01:39,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:39,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:39,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:39,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:39,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:39,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:39,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 282 transitions, 2529 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:39,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:39,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:39,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:41,227 INFO L124 PetriNetUnfolderBase]: 5122/8605 cut-off events. [2024-05-12 13:01:41,227 INFO L125 PetriNetUnfolderBase]: For 425098/425139 co-relation queries the response was YES. [2024-05-12 13:01:41,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53689 conditions, 8605 events. 5122/8605 cut-off events. For 425098/425139 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 59478 event pairs, 1557 based on Foata normal form. 23/8350 useless extension candidates. Maximal degree in co-relation 53597. Up to 7080 conditions per place. [2024-05-12 13:01:41,353 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 228 selfloop transitions, 24 changer transitions 0/308 dead transitions. [2024-05-12 13:01:41,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 308 transitions, 3136 flow [2024-05-12 13:01:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:41,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-05-12 13:01:41,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-05-12 13:01:41,355 INFO L175 Difference]: Start difference. First operand has 203 places, 282 transitions, 2529 flow. Second operand 7 states and 176 transitions. [2024-05-12 13:01:41,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 308 transitions, 3136 flow [2024-05-12 13:01:41,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 308 transitions, 2984 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:41,959 INFO L231 Difference]: Finished difference. Result has 205 places, 283 transitions, 2440 flow [2024-05-12 13:01:41,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2440, PETRI_PLACES=205, PETRI_TRANSITIONS=283} [2024-05-12 13:01:41,960 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 149 predicate places. [2024-05-12 13:01:41,960 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 283 transitions, 2440 flow [2024-05-12 13:01:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:41,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:41,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:01:41,961 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:41,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:41,961 INFO L85 PathProgramCache]: Analyzing trace with hash -865266116, now seen corresponding path program 1 times [2024-05-12 13:01:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542990129] [2024-05-12 13:01:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:41,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:42,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:42,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542990129] [2024-05-12 13:01:42,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542990129] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:42,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:42,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460573522] [2024-05-12 13:01:42,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:42,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:42,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:43,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:43,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 283 transitions, 2440 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:43,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:43,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:43,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:44,423 INFO L124 PetriNetUnfolderBase]: 5269/8654 cut-off events. [2024-05-12 13:01:44,424 INFO L125 PetriNetUnfolderBase]: For 437855/437951 co-relation queries the response was YES. [2024-05-12 13:01:44,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54119 conditions, 8654 events. 5269/8654 cut-off events. For 437855/437951 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58221 event pairs, 1478 based on Foata normal form. 82/8565 useless extension candidates. Maximal degree in co-relation 54026. Up to 7246 conditions per place. [2024-05-12 13:01:44,538 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 257 selfloop transitions, 17 changer transitions 0/316 dead transitions. [2024-05-12 13:01:44,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 316 transitions, 3151 flow [2024-05-12 13:01:44,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:44,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:44,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-05-12 13:01:44,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114285714285715 [2024-05-12 13:01:44,540 INFO L175 Difference]: Start difference. First operand has 205 places, 283 transitions, 2440 flow. Second operand 7 states and 179 transitions. [2024-05-12 13:01:44,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 316 transitions, 3151 flow [2024-05-12 13:01:45,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 316 transitions, 3099 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:45,088 INFO L231 Difference]: Finished difference. Result has 208 places, 290 transitions, 2526 flow [2024-05-12 13:01:45,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2526, PETRI_PLACES=208, PETRI_TRANSITIONS=290} [2024-05-12 13:01:45,090 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 152 predicate places. [2024-05-12 13:01:45,090 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 290 transitions, 2526 flow [2024-05-12 13:01:45,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:45,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:45,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:45,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:01:45,091 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:45,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 848080666, now seen corresponding path program 1 times [2024-05-12 13:01:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:45,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594960801] [2024-05-12 13:01:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:45,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:46,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:46,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594960801] [2024-05-12 13:01:46,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594960801] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:46,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772195807] [2024-05-12 13:01:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:46,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:46,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:46,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 290 transitions, 2526 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:46,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:46,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:46,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:47,607 INFO L124 PetriNetUnfolderBase]: 5281/8684 cut-off events. [2024-05-12 13:01:47,608 INFO L125 PetriNetUnfolderBase]: For 456395/456491 co-relation queries the response was YES. [2024-05-12 13:01:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55485 conditions, 8684 events. 5281/8684 cut-off events. For 456395/456491 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 58564 event pairs, 1481 based on Foata normal form. 83/8594 useless extension candidates. Maximal degree in co-relation 55390. Up to 7262 conditions per place. [2024-05-12 13:01:47,888 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 260 selfloop transitions, 16 changer transitions 0/318 dead transitions. [2024-05-12 13:01:47,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 318 transitions, 3214 flow [2024-05-12 13:01:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:47,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 13:01:47,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057142857142857 [2024-05-12 13:01:47,890 INFO L175 Difference]: Start difference. First operand has 208 places, 290 transitions, 2526 flow. Second operand 7 states and 177 transitions. [2024-05-12 13:01:47,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 318 transitions, 3214 flow [2024-05-12 13:01:48,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 318 transitions, 3139 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-05-12 13:01:48,561 INFO L231 Difference]: Finished difference. Result has 211 places, 293 transitions, 2543 flow [2024-05-12 13:01:48,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2543, PETRI_PLACES=211, PETRI_TRANSITIONS=293} [2024-05-12 13:01:48,563 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 155 predicate places. [2024-05-12 13:01:48,563 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 293 transitions, 2543 flow [2024-05-12 13:01:48,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:48,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:48,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:48,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:01:48,563 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:48,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:48,564 INFO L85 PathProgramCache]: Analyzing trace with hash -865115456, now seen corresponding path program 2 times [2024-05-12 13:01:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:48,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907897915] [2024-05-12 13:01:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:49,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:49,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907897915] [2024-05-12 13:01:49,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907897915] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:49,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:49,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:49,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108136653] [2024-05-12 13:01:49,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:49,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:49,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:49,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:49,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:49,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:49,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 293 transitions, 2543 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:49,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:49,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:49,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:51,106 INFO L124 PetriNetUnfolderBase]: 5315/8738 cut-off events. [2024-05-12 13:01:51,106 INFO L125 PetriNetUnfolderBase]: For 469393/469489 co-relation queries the response was YES. [2024-05-12 13:01:51,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56558 conditions, 8738 events. 5315/8738 cut-off events. For 469393/469489 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 58974 event pairs, 1483 based on Foata normal form. 82/8646 useless extension candidates. Maximal degree in co-relation 56462. Up to 7275 conditions per place. [2024-05-12 13:01:51,212 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 258 selfloop transitions, 22 changer transitions 0/322 dead transitions. [2024-05-12 13:01:51,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 322 transitions, 3253 flow [2024-05-12 13:01:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:51,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:01:51,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-05-12 13:01:51,214 INFO L175 Difference]: Start difference. First operand has 211 places, 293 transitions, 2543 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:01:51,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 322 transitions, 3253 flow [2024-05-12 13:01:52,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 322 transitions, 3183 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:52,007 INFO L231 Difference]: Finished difference. Result has 213 places, 296 transitions, 2585 flow [2024-05-12 13:01:52,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2585, PETRI_PLACES=213, PETRI_TRANSITIONS=296} [2024-05-12 13:01:52,008 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 157 predicate places. [2024-05-12 13:01:52,008 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 296 transitions, 2585 flow [2024-05-12 13:01:52,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:52,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:52,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:52,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:01:52,009 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:52,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1055656418, now seen corresponding path program 3 times [2024-05-12 13:01:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:52,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242582707] [2024-05-12 13:01:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:53,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:53,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242582707] [2024-05-12 13:01:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242582707] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:53,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637566384] [2024-05-12 13:01:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:53,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:53,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 296 transitions, 2585 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:53,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:53,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:53,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:54,547 INFO L124 PetriNetUnfolderBase]: 5347/8931 cut-off events. [2024-05-12 13:01:54,548 INFO L125 PetriNetUnfolderBase]: For 484507/484607 co-relation queries the response was YES. [2024-05-12 13:01:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57710 conditions, 8931 events. 5347/8931 cut-off events. For 484507/484607 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 61505 event pairs, 1472 based on Foata normal form. 84/8801 useless extension candidates. Maximal degree in co-relation 57613. Up to 7272 conditions per place. [2024-05-12 13:01:54,648 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 253 selfloop transitions, 29 changer transitions 0/324 dead transitions. [2024-05-12 13:01:54,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 324 transitions, 3309 flow [2024-05-12 13:01:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:01:54,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-05-12 13:01:54,649 INFO L175 Difference]: Start difference. First operand has 213 places, 296 transitions, 2585 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:01:54,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 324 transitions, 3309 flow [2024-05-12 13:01:55,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 324 transitions, 3219 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:55,472 INFO L231 Difference]: Finished difference. Result has 215 places, 299 transitions, 2627 flow [2024-05-12 13:01:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2627, PETRI_PLACES=215, PETRI_TRANSITIONS=299} [2024-05-12 13:01:55,472 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 159 predicate places. [2024-05-12 13:01:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 299 transitions, 2627 flow [2024-05-12 13:01:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:01:55,473 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:55,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 470348052, now seen corresponding path program 2 times [2024-05-12 13:01:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535662188] [2024-05-12 13:01:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:01:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:01:56,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:01:56,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535662188] [2024-05-12 13:01:56,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535662188] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:01:56,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:01:56,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:01:56,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657885307] [2024-05-12 13:01:56,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:01:56,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:01:56,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:01:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:01:56,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:01:56,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:01:56,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 299 transitions, 2627 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:56,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:01:56,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:01:56,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:01:58,096 INFO L124 PetriNetUnfolderBase]: 5376/8983 cut-off events. [2024-05-12 13:01:58,096 INFO L125 PetriNetUnfolderBase]: For 501121/501224 co-relation queries the response was YES. [2024-05-12 13:01:58,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58757 conditions, 8983 events. 5376/8983 cut-off events. For 501121/501224 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 61938 event pairs, 1467 based on Foata normal form. 86/8851 useless extension candidates. Maximal degree in co-relation 58659. Up to 7373 conditions per place. [2024-05-12 13:01:58,203 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 262 selfloop transitions, 21 changer transitions 0/325 dead transitions. [2024-05-12 13:01:58,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 325 transitions, 3337 flow [2024-05-12 13:01:58,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:01:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:01:58,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-05-12 13:01:58,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028571428571429 [2024-05-12 13:01:58,204 INFO L175 Difference]: Start difference. First operand has 215 places, 299 transitions, 2627 flow. Second operand 7 states and 176 transitions. [2024-05-12 13:01:58,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 325 transitions, 3337 flow [2024-05-12 13:01:59,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 325 transitions, 3227 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 13:01:59,072 INFO L231 Difference]: Finished difference. Result has 217 places, 302 transitions, 2625 flow [2024-05-12 13:01:59,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2625, PETRI_PLACES=217, PETRI_TRANSITIONS=302} [2024-05-12 13:01:59,073 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 161 predicate places. [2024-05-12 13:01:59,073 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 302 transitions, 2625 flow [2024-05-12 13:01:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:01:59,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:01:59,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:01:59,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:01:59,073 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:01:59,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:01:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1055953336, now seen corresponding path program 3 times [2024-05-12 13:01:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:01:59,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748183627] [2024-05-12 13:01:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:01:59,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:01:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:00,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:00,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748183627] [2024-05-12 13:02:00,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748183627] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:00,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:00,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:02:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202363170] [2024-05-12 13:02:00,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:00,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:02:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:02:00,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:02:00,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:02:00,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 302 transitions, 2625 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:00,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:00,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:02:00,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:01,892 INFO L124 PetriNetUnfolderBase]: 5429/9128 cut-off events. [2024-05-12 13:02:01,893 INFO L125 PetriNetUnfolderBase]: For 515389/515492 co-relation queries the response was YES. [2024-05-12 13:02:01,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59875 conditions, 9128 events. 5429/9128 cut-off events. For 515389/515492 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 63576 event pairs, 1484 based on Foata normal form. 87/8979 useless extension candidates. Maximal degree in co-relation 59776. Up to 7352 conditions per place. [2024-05-12 13:02:01,980 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 259 selfloop transitions, 33 changer transitions 0/334 dead transitions. [2024-05-12 13:02:01,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 334 transitions, 3557 flow [2024-05-12 13:02:01,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:02:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:02:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-05-12 13:02:01,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-05-12 13:02:01,981 INFO L175 Difference]: Start difference. First operand has 217 places, 302 transitions, 2625 flow. Second operand 7 states and 180 transitions. [2024-05-12 13:02:01,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 334 transitions, 3557 flow [2024-05-12 13:02:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 334 transitions, 3471 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 13:02:02,711 INFO L231 Difference]: Finished difference. Result has 219 places, 308 transitions, 2742 flow [2024-05-12 13:02:02,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2539, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2742, PETRI_PLACES=219, PETRI_TRANSITIONS=308} [2024-05-12 13:02:02,712 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 163 predicate places. [2024-05-12 13:02:02,712 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 308 transitions, 2742 flow [2024-05-12 13:02:02,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:02,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:02,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:02:02,713 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:02,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash -701098238, now seen corresponding path program 1 times [2024-05-12 13:02:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886944885] [2024-05-12 13:02:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:03,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886944885] [2024-05-12 13:02:03,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886944885] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:03,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:03,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609695126] [2024-05-12 13:02:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:03,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:03,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:03,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:03,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 308 transitions, 2742 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:03,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:03,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:03,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:06,107 INFO L124 PetriNetUnfolderBase]: 6462/10516 cut-off events. [2024-05-12 13:02:06,107 INFO L125 PetriNetUnfolderBase]: For 630598/630608 co-relation queries the response was YES. [2024-05-12 13:02:06,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71787 conditions, 10516 events. 6462/10516 cut-off events. For 630598/630608 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 70916 event pairs, 1414 based on Foata normal form. 26/10292 useless extension candidates. Maximal degree in co-relation 71687. Up to 8468 conditions per place. [2024-05-12 13:02:06,255 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 337 selfloop transitions, 50 changer transitions 0/397 dead transitions. [2024-05-12 13:02:06,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 397 transitions, 4178 flow [2024-05-12 13:02:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:02:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:02:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-05-12 13:02:06,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254545454545455 [2024-05-12 13:02:06,257 INFO L175 Difference]: Start difference. First operand has 219 places, 308 transitions, 2742 flow. Second operand 11 states and 289 transitions. [2024-05-12 13:02:06,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 397 transitions, 4178 flow [2024-05-12 13:02:07,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 397 transitions, 4098 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-05-12 13:02:07,019 INFO L231 Difference]: Finished difference. Result has 227 places, 310 transitions, 2870 flow [2024-05-12 13:02:07,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2870, PETRI_PLACES=227, PETRI_TRANSITIONS=310} [2024-05-12 13:02:07,024 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 171 predicate places. [2024-05-12 13:02:07,024 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 310 transitions, 2870 flow [2024-05-12 13:02:07,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:07,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:07,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:07,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:02:07,025 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:07,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash 850336916, now seen corresponding path program 2 times [2024-05-12 13:02:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:07,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913286152] [2024-05-12 13:02:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913286152] [2024-05-12 13:02:08,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913286152] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:08,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:08,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22552043] [2024-05-12 13:02:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:08,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:08,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:08,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:08,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 310 transitions, 2870 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:08,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:08,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:08,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:10,721 INFO L124 PetriNetUnfolderBase]: 6584/10634 cut-off events. [2024-05-12 13:02:10,722 INFO L125 PetriNetUnfolderBase]: For 655345/655355 co-relation queries the response was YES. [2024-05-12 13:02:10,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73556 conditions, 10634 events. 6584/10634 cut-off events. For 655345/655355 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 71586 event pairs, 1832 based on Foata normal form. 30/10434 useless extension candidates. Maximal degree in co-relation 73454. Up to 9017 conditions per place. [2024-05-12 13:02:10,917 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 328 selfloop transitions, 45 changer transitions 0/383 dead transitions. [2024-05-12 13:02:10,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 383 transitions, 3950 flow [2024-05-12 13:02:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:10,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-05-12 13:02:10,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-05-12 13:02:10,919 INFO L175 Difference]: Start difference. First operand has 227 places, 310 transitions, 2870 flow. Second operand 10 states and 258 transitions. [2024-05-12 13:02:10,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 383 transitions, 3950 flow [2024-05-12 13:02:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 383 transitions, 3845 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-05-12 13:02:11,910 INFO L231 Difference]: Finished difference. Result has 230 places, 311 transitions, 2916 flow [2024-05-12 13:02:11,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2916, PETRI_PLACES=230, PETRI_TRANSITIONS=311} [2024-05-12 13:02:11,911 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 174 predicate places. [2024-05-12 13:02:11,911 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 311 transitions, 2916 flow [2024-05-12 13:02:11,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:11,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:11,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:11,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:02:11,912 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:11,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1784043506, now seen corresponding path program 3 times [2024-05-12 13:02:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:11,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225045262] [2024-05-12 13:02:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:11,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225045262] [2024-05-12 13:02:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225045262] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813445470] [2024-05-12 13:02:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:13,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:13,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 311 transitions, 2916 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:13,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:13,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:13,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:15,248 INFO L124 PetriNetUnfolderBase]: 6556/10555 cut-off events. [2024-05-12 13:02:15,248 INFO L125 PetriNetUnfolderBase]: For 629010/629020 co-relation queries the response was YES. [2024-05-12 13:02:15,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71740 conditions, 10555 events. 6556/10555 cut-off events. For 629010/629020 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 70722 event pairs, 1761 based on Foata normal form. 26/10361 useless extension candidates. Maximal degree in co-relation 71636. Up to 8767 conditions per place. [2024-05-12 13:02:15,371 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 330 selfloop transitions, 47 changer transitions 0/387 dead transitions. [2024-05-12 13:02:15,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 387 transitions, 3978 flow [2024-05-12 13:02:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-05-12 13:02:15,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524 [2024-05-12 13:02:15,373 INFO L175 Difference]: Start difference. First operand has 230 places, 311 transitions, 2916 flow. Second operand 10 states and 262 transitions. [2024-05-12 13:02:15,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 387 transitions, 3978 flow [2024-05-12 13:02:16,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 387 transitions, 3839 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:16,308 INFO L231 Difference]: Finished difference. Result has 232 places, 311 transitions, 2877 flow [2024-05-12 13:02:16,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2877, PETRI_PLACES=232, PETRI_TRANSITIONS=311} [2024-05-12 13:02:16,308 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 176 predicate places. [2024-05-12 13:02:16,308 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 311 transitions, 2877 flow [2024-05-12 13:02:16,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:16,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:16,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:16,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:02:16,309 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:16,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:16,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1327963254, now seen corresponding path program 4 times [2024-05-12 13:02:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:16,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116374620] [2024-05-12 13:02:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:16,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:17,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116374620] [2024-05-12 13:02:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116374620] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:17,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:17,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:17,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400713990] [2024-05-12 13:02:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:17,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:17,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:17,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 311 transitions, 2877 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:17,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:17,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:17,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:19,830 INFO L124 PetriNetUnfolderBase]: 6723/10763 cut-off events. [2024-05-12 13:02:19,830 INFO L125 PetriNetUnfolderBase]: For 647374/647390 co-relation queries the response was YES. [2024-05-12 13:02:19,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73058 conditions, 10763 events. 6723/10763 cut-off events. For 647374/647390 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 72120 event pairs, 1626 based on Foata normal form. 31/10591 useless extension candidates. Maximal degree in co-relation 72953. Up to 8113 conditions per place. [2024-05-12 13:02:19,963 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 243 selfloop transitions, 134 changer transitions 0/387 dead transitions. [2024-05-12 13:02:19,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 387 transitions, 4011 flow [2024-05-12 13:02:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-05-12 13:02:19,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-05-12 13:02:19,965 INFO L175 Difference]: Start difference. First operand has 232 places, 311 transitions, 2877 flow. Second operand 10 states and 268 transitions. [2024-05-12 13:02:19,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 387 transitions, 4011 flow [2024-05-12 13:02:20,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 387 transitions, 3897 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-05-12 13:02:20,942 INFO L231 Difference]: Finished difference. Result has 233 places, 312 transitions, 3092 flow [2024-05-12 13:02:20,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3092, PETRI_PLACES=233, PETRI_TRANSITIONS=312} [2024-05-12 13:02:20,942 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 177 predicate places. [2024-05-12 13:02:20,942 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 312 transitions, 3092 flow [2024-05-12 13:02:20,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:20,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:20,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:20,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:02:20,943 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:20,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1333325634, now seen corresponding path program 5 times [2024-05-12 13:02:20,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:20,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551760743] [2024-05-12 13:02:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:20,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:22,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:22,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551760743] [2024-05-12 13:02:22,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551760743] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:22,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:22,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:22,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082362740] [2024-05-12 13:02:22,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:22,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:22,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:22,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:22,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:22,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:22,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 312 transitions, 3092 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:22,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:22,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:22,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:24,670 INFO L124 PetriNetUnfolderBase]: 6890/11057 cut-off events. [2024-05-12 13:02:24,670 INFO L125 PetriNetUnfolderBase]: For 684385/684401 co-relation queries the response was YES. [2024-05-12 13:02:24,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76375 conditions, 11057 events. 6890/11057 cut-off events. For 684385/684401 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 74514 event pairs, 1669 based on Foata normal form. 31/10875 useless extension candidates. Maximal degree in co-relation 76269. Up to 8370 conditions per place. [2024-05-12 13:02:24,844 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 246 selfloop transitions, 133 changer transitions 0/389 dead transitions. [2024-05-12 13:02:24,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 389 transitions, 4236 flow [2024-05-12 13:02:24,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-05-12 13:02:24,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-05-12 13:02:24,846 INFO L175 Difference]: Start difference. First operand has 233 places, 312 transitions, 3092 flow. Second operand 10 states and 270 transitions. [2024-05-12 13:02:24,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 389 transitions, 4236 flow [2024-05-12 13:02:26,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 389 transitions, 3937 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:26,180 INFO L231 Difference]: Finished difference. Result has 235 places, 313 transitions, 3122 flow [2024-05-12 13:02:26,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3122, PETRI_PLACES=235, PETRI_TRANSITIONS=313} [2024-05-12 13:02:26,180 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 179 predicate places. [2024-05-12 13:02:26,180 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 313 transitions, 3122 flow [2024-05-12 13:02:26,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:26,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:26,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:26,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:02:26,181 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:26,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1333473504, now seen corresponding path program 6 times [2024-05-12 13:02:26,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:26,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408389672] [2024-05-12 13:02:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408389672] [2024-05-12 13:02:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408389672] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:27,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:27,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:27,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485096012] [2024-05-12 13:02:27,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:27,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:27,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:27,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 313 transitions, 3122 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:27,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:27,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:27,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:29,691 INFO L124 PetriNetUnfolderBase]: 7020/11220 cut-off events. [2024-05-12 13:02:29,691 INFO L125 PetriNetUnfolderBase]: For 695560/695576 co-relation queries the response was YES. [2024-05-12 13:02:29,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77641 conditions, 11220 events. 7020/11220 cut-off events. For 695560/695576 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 75502 event pairs, 1629 based on Foata normal form. 27/11044 useless extension candidates. Maximal degree in co-relation 77534. Up to 8142 conditions per place. [2024-05-12 13:02:29,827 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 247 selfloop transitions, 136 changer transitions 0/393 dead transitions. [2024-05-12 13:02:29,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 393 transitions, 4298 flow [2024-05-12 13:02:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 272 transitions. [2024-05-12 13:02:29,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.544 [2024-05-12 13:02:29,829 INFO L175 Difference]: Start difference. First operand has 235 places, 313 transitions, 3122 flow. Second operand 10 states and 272 transitions. [2024-05-12 13:02:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 393 transitions, 4298 flow [2024-05-12 13:02:31,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 393 transitions, 3999 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:31,067 INFO L231 Difference]: Finished difference. Result has 237 places, 314 transitions, 3159 flow [2024-05-12 13:02:31,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3159, PETRI_PLACES=237, PETRI_TRANSITIONS=314} [2024-05-12 13:02:31,068 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 181 predicate places. [2024-05-12 13:02:31,068 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 314 transitions, 3159 flow [2024-05-12 13:02:31,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:31,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:31,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:02:31,069 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:31,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:31,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1327747773, now seen corresponding path program 1 times [2024-05-12 13:02:31,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:31,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254103813] [2024-05-12 13:02:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:31,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:32,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:32,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254103813] [2024-05-12 13:02:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254103813] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:32,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:32,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:32,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703348142] [2024-05-12 13:02:32,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:32,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:32,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:32,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:32,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 314 transitions, 3159 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:32,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:32,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:32,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:34,942 INFO L124 PetriNetUnfolderBase]: 7057/11429 cut-off events. [2024-05-12 13:02:34,942 INFO L125 PetriNetUnfolderBase]: For 683904/683920 co-relation queries the response was YES. [2024-05-12 13:02:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77732 conditions, 11429 events. 7057/11429 cut-off events. For 683904/683920 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 78237 event pairs, 1787 based on Foata normal form. 15/11197 useless extension candidates. Maximal degree in co-relation 77624. Up to 9370 conditions per place. [2024-05-12 13:02:35,085 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 269 selfloop transitions, 109 changer transitions 0/388 dead transitions. [2024-05-12 13:02:35,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 388 transitions, 4276 flow [2024-05-12 13:02:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-05-12 13:02:35,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 13:02:35,086 INFO L175 Difference]: Start difference. First operand has 237 places, 314 transitions, 3159 flow. Second operand 10 states and 260 transitions. [2024-05-12 13:02:35,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 388 transitions, 4276 flow [2024-05-12 13:02:36,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 388 transitions, 3958 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:36,285 INFO L231 Difference]: Finished difference. Result has 240 places, 319 transitions, 3163 flow [2024-05-12 13:02:36,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3163, PETRI_PLACES=240, PETRI_TRANSITIONS=319} [2024-05-12 13:02:36,286 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 184 predicate places. [2024-05-12 13:02:36,286 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 319 transitions, 3163 flow [2024-05-12 13:02:36,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:36,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:36,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:36,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:02:36,287 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:36,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -294177986, now seen corresponding path program 7 times [2024-05-12 13:02:36,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:36,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980427118] [2024-05-12 13:02:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:37,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980427118] [2024-05-12 13:02:37,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980427118] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:37,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:37,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:37,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384675283] [2024-05-12 13:02:37,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:37,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:37,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:37,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:37,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:37,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 319 transitions, 3163 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:37,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:37,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:37,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:40,138 INFO L124 PetriNetUnfolderBase]: 7224/11730 cut-off events. [2024-05-12 13:02:40,138 INFO L125 PetriNetUnfolderBase]: For 736876/736882 co-relation queries the response was YES. [2024-05-12 13:02:40,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80152 conditions, 11730 events. 7224/11730 cut-off events. For 736876/736882 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 81026 event pairs, 1763 based on Foata normal form. 21/11491 useless extension candidates. Maximal degree in co-relation 80042. Up to 8884 conditions per place. [2024-05-12 13:02:40,347 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 253 selfloop transitions, 129 changer transitions 0/392 dead transitions. [2024-05-12 13:02:40,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 392 transitions, 4311 flow [2024-05-12 13:02:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-05-12 13:02:40,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532 [2024-05-12 13:02:40,349 INFO L175 Difference]: Start difference. First operand has 240 places, 319 transitions, 3163 flow. Second operand 10 states and 266 transitions. [2024-05-12 13:02:40,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 392 transitions, 4311 flow [2024-05-12 13:02:41,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 392 transitions, 4036 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-05-12 13:02:41,558 INFO L231 Difference]: Finished difference. Result has 243 places, 320 transitions, 3215 flow [2024-05-12 13:02:41,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3215, PETRI_PLACES=243, PETRI_TRANSITIONS=320} [2024-05-12 13:02:41,559 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 187 predicate places. [2024-05-12 13:02:41,559 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 320 transitions, 3215 flow [2024-05-12 13:02:41,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:41,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:41,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:02:41,560 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:41,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -488117396, now seen corresponding path program 8 times [2024-05-12 13:02:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132988856] [2024-05-12 13:02:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:42,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:42,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132988856] [2024-05-12 13:02:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132988856] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:42,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:42,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598085116] [2024-05-12 13:02:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:42,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:42,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:42,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:42,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 320 transitions, 3215 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:42,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:42,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:42,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:45,485 INFO L124 PetriNetUnfolderBase]: 7391/12024 cut-off events. [2024-05-12 13:02:45,485 INFO L125 PetriNetUnfolderBase]: For 783362/783368 co-relation queries the response was YES. [2024-05-12 13:02:45,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83215 conditions, 12024 events. 7391/12024 cut-off events. For 783362/783368 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 83593 event pairs, 1803 based on Foata normal form. 21/11777 useless extension candidates. Maximal degree in co-relation 83104. Up to 9141 conditions per place. [2024-05-12 13:02:45,772 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 262 selfloop transitions, 124 changer transitions 0/396 dead transitions. [2024-05-12 13:02:45,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 396 transitions, 4391 flow [2024-05-12 13:02:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-05-12 13:02:45,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538 [2024-05-12 13:02:45,774 INFO L175 Difference]: Start difference. First operand has 243 places, 320 transitions, 3215 flow. Second operand 10 states and 269 transitions. [2024-05-12 13:02:45,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 396 transitions, 4391 flow [2024-05-12 13:02:47,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 396 transitions, 4094 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:47,224 INFO L231 Difference]: Finished difference. Result has 245 places, 321 transitions, 3237 flow [2024-05-12 13:02:47,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2918, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3237, PETRI_PLACES=245, PETRI_TRANSITIONS=321} [2024-05-12 13:02:47,225 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 189 predicate places. [2024-05-12 13:02:47,225 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 321 transitions, 3237 flow [2024-05-12 13:02:47,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:47,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:47,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:47,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:02:47,226 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:47,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:47,226 INFO L85 PathProgramCache]: Analyzing trace with hash -493479776, now seen corresponding path program 9 times [2024-05-12 13:02:47,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:47,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543725743] [2024-05-12 13:02:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:47,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:48,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:48,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:48,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543725743] [2024-05-12 13:02:48,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543725743] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:48,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:48,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:48,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987355414] [2024-05-12 13:02:48,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:48,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:48,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:48,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:48,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 321 transitions, 3237 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:48,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:48,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:48,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:51,321 INFO L124 PetriNetUnfolderBase]: 7558/12318 cut-off events. [2024-05-12 13:02:51,321 INFO L125 PetriNetUnfolderBase]: For 809598/809604 co-relation queries the response was YES. [2024-05-12 13:02:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85135 conditions, 12318 events. 7558/12318 cut-off events. For 809598/809604 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 86100 event pairs, 1848 based on Foata normal form. 21/12068 useless extension candidates. Maximal degree in co-relation 85023. Up to 9398 conditions per place. [2024-05-12 13:02:51,537 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 262 selfloop transitions, 125 changer transitions 0/397 dead transitions. [2024-05-12 13:02:51,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 397 transitions, 4417 flow [2024-05-12 13:02:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-05-12 13:02:51,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536 [2024-05-12 13:02:51,539 INFO L175 Difference]: Start difference. First operand has 245 places, 321 transitions, 3237 flow. Second operand 10 states and 268 transitions. [2024-05-12 13:02:51,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 397 transitions, 4417 flow [2024-05-12 13:02:53,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 397 transitions, 4128 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:53,495 INFO L231 Difference]: Finished difference. Result has 247 places, 322 transitions, 3271 flow [2024-05-12 13:02:53,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3271, PETRI_PLACES=247, PETRI_TRANSITIONS=322} [2024-05-12 13:02:53,495 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 191 predicate places. [2024-05-12 13:02:53,496 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 322 transitions, 3271 flow [2024-05-12 13:02:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:53,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:53,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:53,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:02:53,496 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:53,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1665138674, now seen corresponding path program 10 times [2024-05-12 13:02:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116084033] [2024-05-12 13:02:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:54,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116084033] [2024-05-12 13:02:54,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116084033] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:54,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:54,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:02:54,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456332956] [2024-05-12 13:02:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:54,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:02:54,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:02:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:02:54,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:54,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 322 transitions, 3271 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:54,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:54,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:54,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:02:57,418 INFO L124 PetriNetUnfolderBase]: 7688/12456 cut-off events. [2024-05-12 13:02:57,419 INFO L125 PetriNetUnfolderBase]: For 819715/819721 co-relation queries the response was YES. [2024-05-12 13:02:57,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86361 conditions, 12456 events. 7688/12456 cut-off events. For 819715/819721 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 86783 event pairs, 1805 based on Foata normal form. 17/12216 useless extension candidates. Maximal degree in co-relation 86248. Up to 8946 conditions per place. [2024-05-12 13:02:57,602 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 262 selfloop transitions, 129 changer transitions 0/401 dead transitions. [2024-05-12 13:02:57,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 401 transitions, 4483 flow [2024-05-12 13:02:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:02:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:02:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-05-12 13:02:57,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-05-12 13:02:57,604 INFO L175 Difference]: Start difference. First operand has 247 places, 322 transitions, 3271 flow. Second operand 10 states and 270 transitions. [2024-05-12 13:02:57,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 401 transitions, 4483 flow [2024-05-12 13:02:58,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 401 transitions, 4190 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-05-12 13:02:58,977 INFO L231 Difference]: Finished difference. Result has 249 places, 323 transitions, 3310 flow [2024-05-12 13:02:58,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2978, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3310, PETRI_PLACES=249, PETRI_TRANSITIONS=323} [2024-05-12 13:02:58,978 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 193 predicate places. [2024-05-12 13:02:58,978 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 323 transitions, 3310 flow [2024-05-12 13:02:58,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:58,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:02:58,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:02:58,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:02:58,979 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:02:58,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:02:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1603970186, now seen corresponding path program 1 times [2024-05-12 13:02:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:02:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190368501] [2024-05-12 13:02:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:02:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:02:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:02:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:02:59,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:02:59,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190368501] [2024-05-12 13:02:59,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190368501] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:02:59,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:02:59,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:02:59,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825396282] [2024-05-12 13:02:59,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:02:59,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:02:59,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:02:59,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:02:59,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:02:59,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:02:59,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 323 transitions, 3310 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:02:59,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:02:59,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:02:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:02,172 INFO L124 PetriNetUnfolderBase]: 7705/12614 cut-off events. [2024-05-12 13:03:02,173 INFO L125 PetriNetUnfolderBase]: For 786333/786352 co-relation queries the response was YES. [2024-05-12 13:03:02,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85967 conditions, 12614 events. 7705/12614 cut-off events. For 786333/786352 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 89115 event pairs, 2154 based on Foata normal form. 17/12345 useless extension candidates. Maximal degree in co-relation 85853. Up to 11048 conditions per place. [2024-05-12 13:03:02,461 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 328 selfloop transitions, 33 changer transitions 0/371 dead transitions. [2024-05-12 13:03:02,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 371 transitions, 4404 flow [2024-05-12 13:03:02,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:02,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:03:02,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48857142857142855 [2024-05-12 13:03:02,463 INFO L175 Difference]: Start difference. First operand has 249 places, 323 transitions, 3310 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:03:02,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 371 transitions, 4404 flow [2024-05-12 13:03:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 371 transitions, 4082 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-05-12 13:03:03,863 INFO L231 Difference]: Finished difference. Result has 250 places, 340 transitions, 3379 flow [2024-05-12 13:03:03,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3379, PETRI_PLACES=250, PETRI_TRANSITIONS=340} [2024-05-12 13:03:03,864 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 194 predicate places. [2024-05-12 13:03:03,864 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 340 transitions, 3379 flow [2024-05-12 13:03:03,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:03,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:03,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:03,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:03:03,865 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:03,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -358000442, now seen corresponding path program 2 times [2024-05-12 13:03:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221288356] [2024-05-12 13:03:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:04,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221288356] [2024-05-12 13:03:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221288356] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:04,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:04,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:03:04,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944245040] [2024-05-12 13:03:04,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:04,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:03:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:04,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:03:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:03:04,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:03:04,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 340 transitions, 3379 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:04,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:04,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:03:04,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:07,243 INFO L124 PetriNetUnfolderBase]: 7742/12677 cut-off events. [2024-05-12 13:03:07,243 INFO L125 PetriNetUnfolderBase]: For 791314/791333 co-relation queries the response was YES. [2024-05-12 13:03:07,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86227 conditions, 12677 events. 7742/12677 cut-off events. For 791314/791333 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 89606 event pairs, 2161 based on Foata normal form. 17/12407 useless extension candidates. Maximal degree in co-relation 86110. Up to 11060 conditions per place. [2024-05-12 13:03:07,572 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 324 selfloop transitions, 41 changer transitions 0/375 dead transitions. [2024-05-12 13:03:07,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 375 transitions, 4545 flow [2024-05-12 13:03:07,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:03:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:03:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:03:07,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48857142857142855 [2024-05-12 13:03:07,574 INFO L175 Difference]: Start difference. First operand has 250 places, 340 transitions, 3379 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:03:07,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 375 transitions, 4545 flow [2024-05-12 13:03:09,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 375 transitions, 4416 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-05-12 13:03:09,146 INFO L231 Difference]: Finished difference. Result has 254 places, 346 transitions, 3516 flow [2024-05-12 13:03:09,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3516, PETRI_PLACES=254, PETRI_TRANSITIONS=346} [2024-05-12 13:03:09,147 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 198 predicate places. [2024-05-12 13:03:09,147 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 346 transitions, 3516 flow [2024-05-12 13:03:09,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:09,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:09,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:09,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:03:09,148 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:09,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash 84463729, now seen corresponding path program 2 times [2024-05-12 13:03:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:09,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208676033] [2024-05-12 13:03:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:09,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:10,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208676033] [2024-05-12 13:03:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208676033] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:10,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:10,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:10,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377371610] [2024-05-12 13:03:10,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:10,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:10,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:03:10,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 346 transitions, 3516 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:10,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:10,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:03:10,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:13,064 INFO L124 PetriNetUnfolderBase]: 7779/12748 cut-off events. [2024-05-12 13:03:13,065 INFO L125 PetriNetUnfolderBase]: For 828396/828402 co-relation queries the response was YES. [2024-05-12 13:03:13,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87599 conditions, 12748 events. 7779/12748 cut-off events. For 828396/828402 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 90223 event pairs, 2027 based on Foata normal form. 5/12458 useless extension candidates. Maximal degree in co-relation 87481. Up to 10471 conditions per place. [2024-05-12 13:03:13,219 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 302 selfloop transitions, 107 changer transitions 0/419 dead transitions. [2024-05-12 13:03:13,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 419 transitions, 4735 flow [2024-05-12 13:03:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-05-12 13:03:13,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-05-12 13:03:13,221 INFO L175 Difference]: Start difference. First operand has 254 places, 346 transitions, 3516 flow. Second operand 10 states and 260 transitions. [2024-05-12 13:03:13,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 419 transitions, 4735 flow [2024-05-12 13:03:14,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 419 transitions, 4609 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-05-12 13:03:14,654 INFO L231 Difference]: Finished difference. Result has 262 places, 351 transitions, 3718 flow [2024-05-12 13:03:14,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3718, PETRI_PLACES=262, PETRI_TRANSITIONS=351} [2024-05-12 13:03:14,655 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 206 predicate places. [2024-05-12 13:03:14,655 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 351 transitions, 3718 flow [2024-05-12 13:03:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:14,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:14,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:03:14,656 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:14,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1465473533, now seen corresponding path program 3 times [2024-05-12 13:03:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232395799] [2024-05-12 13:03:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:15,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:15,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232395799] [2024-05-12 13:03:15,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232395799] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:15,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:15,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:15,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343788495] [2024-05-12 13:03:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:15,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:15,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:15,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:15,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:03:15,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 351 transitions, 3718 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:15,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:15,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:03:15,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:18,783 INFO L124 PetriNetUnfolderBase]: 7839/12862 cut-off events. [2024-05-12 13:03:18,783 INFO L125 PetriNetUnfolderBase]: For 857432/857438 co-relation queries the response was YES. [2024-05-12 13:03:19,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90097 conditions, 12862 events. 7839/12862 cut-off events. For 857432/857438 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 91251 event pairs, 2045 based on Foata normal form. 5/12573 useless extension candidates. Maximal degree in co-relation 89976. Up to 10550 conditions per place. [2024-05-12 13:03:19,103 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 299 selfloop transitions, 113 changer transitions 0/422 dead transitions. [2024-05-12 13:03:19,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 422 transitions, 4945 flow [2024-05-12 13:03:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-05-12 13:03:19,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2024-05-12 13:03:19,104 INFO L175 Difference]: Start difference. First operand has 262 places, 351 transitions, 3718 flow. Second operand 10 states and 259 transitions. [2024-05-12 13:03:19,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 422 transitions, 4945 flow [2024-05-12 13:03:20,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 422 transitions, 4654 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-05-12 13:03:20,815 INFO L231 Difference]: Finished difference. Result has 266 places, 357 transitions, 3785 flow [2024-05-12 13:03:20,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3433, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3785, PETRI_PLACES=266, PETRI_TRANSITIONS=357} [2024-05-12 13:03:20,816 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 210 predicate places. [2024-05-12 13:03:20,816 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 357 transitions, 3785 flow [2024-05-12 13:03:20,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:20,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:20,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:20,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:03:20,817 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:20,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash -286812665, now seen corresponding path program 4 times [2024-05-12 13:03:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629702243] [2024-05-12 13:03:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:20,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:21,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:21,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629702243] [2024-05-12 13:03:21,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629702243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:21,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:21,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:21,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823759761] [2024-05-12 13:03:21,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:21,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:21,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:22,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:03:22,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 357 transitions, 3785 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:22,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:22,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:03:22,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:24,760 INFO L124 PetriNetUnfolderBase]: 7876/12902 cut-off events. [2024-05-12 13:03:24,761 INFO L125 PetriNetUnfolderBase]: For 881406/881412 co-relation queries the response was YES. [2024-05-12 13:03:24,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91565 conditions, 12902 events. 7876/12902 cut-off events. For 881406/881412 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 91459 event pairs, 2036 based on Foata normal form. 5/12612 useless extension candidates. Maximal degree in co-relation 91442. Up to 10605 conditions per place. [2024-05-12 13:03:24,973 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 299 selfloop transitions, 117 changer transitions 0/426 dead transitions. [2024-05-12 13:03:24,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 426 transitions, 5012 flow [2024-05-12 13:03:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-05-12 13:03:24,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2024-05-12 13:03:24,975 INFO L175 Difference]: Start difference. First operand has 266 places, 357 transitions, 3785 flow. Second operand 10 states and 258 transitions. [2024-05-12 13:03:24,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 426 transitions, 5012 flow [2024-05-12 13:03:26,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 426 transitions, 4705 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-05-12 13:03:26,424 INFO L231 Difference]: Finished difference. Result has 269 places, 361 transitions, 3826 flow [2024-05-12 13:03:26,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3826, PETRI_PLACES=269, PETRI_TRANSITIONS=361} [2024-05-12 13:03:26,425 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 213 predicate places. [2024-05-12 13:03:26,425 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 361 transitions, 3826 flow [2024-05-12 13:03:26,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:26,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:26,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:26,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:03:26,426 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:26,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash -286543895, now seen corresponding path program 5 times [2024-05-12 13:03:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:26,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724824820] [2024-05-12 13:03:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:26,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:27,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724824820] [2024-05-12 13:03:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724824820] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:27,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:27,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122009571] [2024-05-12 13:03:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:27,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:27,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:03:27,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 361 transitions, 3826 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:27,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:27,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:03:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:30,657 INFO L124 PetriNetUnfolderBase]: 7913/12982 cut-off events. [2024-05-12 13:03:30,658 INFO L125 PetriNetUnfolderBase]: For 906193/906199 co-relation queries the response was YES. [2024-05-12 13:03:30,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92422 conditions, 12982 events. 7913/12982 cut-off events. For 906193/906199 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 92214 event pairs, 1990 based on Foata normal form. 5/12684 useless extension candidates. Maximal degree in co-relation 92298. Up to 10481 conditions per place. [2024-05-12 13:03:30,850 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 293 selfloop transitions, 126 changer transitions 0/429 dead transitions. [2024-05-12 13:03:30,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 429 transitions, 5046 flow [2024-05-12 13:03:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-05-12 13:03:30,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518 [2024-05-12 13:03:30,851 INFO L175 Difference]: Start difference. First operand has 269 places, 361 transitions, 3826 flow. Second operand 10 states and 259 transitions. [2024-05-12 13:03:30,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 429 transitions, 5046 flow [2024-05-12 13:03:32,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 429 transitions, 4760 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-05-12 13:03:32,750 INFO L231 Difference]: Finished difference. Result has 273 places, 363 transitions, 3891 flow [2024-05-12 13:03:32,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3540, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3891, PETRI_PLACES=273, PETRI_TRANSITIONS=363} [2024-05-12 13:03:32,751 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 217 predicate places. [2024-05-12 13:03:32,751 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 363 transitions, 3891 flow [2024-05-12 13:03:32,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:32,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:32,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:32,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:03:32,752 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:32,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:32,753 INFO L85 PathProgramCache]: Analyzing trace with hash 264522102, now seen corresponding path program 1 times [2024-05-12 13:03:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:32,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027473949] [2024-05-12 13:03:32,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:32,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:33,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:33,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027473949] [2024-05-12 13:03:33,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027473949] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:33,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:33,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:03:33,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774841895] [2024-05-12 13:03:33,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:33,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:03:33,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:03:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:03:34,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:03:34,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 363 transitions, 3891 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:34,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:34,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:03:34,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:36,608 INFO L124 PetriNetUnfolderBase]: 7138/12017 cut-off events. [2024-05-12 13:03:36,609 INFO L125 PetriNetUnfolderBase]: For 911649/911718 co-relation queries the response was YES. [2024-05-12 13:03:36,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86745 conditions, 12017 events. 7138/12017 cut-off events. For 911649/911718 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 88286 event pairs, 2049 based on Foata normal form. 32/11657 useless extension candidates. Maximal degree in co-relation 86620. Up to 9863 conditions per place. [2024-05-12 13:03:36,797 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 301 selfloop transitions, 28 changer transitions 0/405 dead transitions. [2024-05-12 13:03:36,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 405 transitions, 4755 flow [2024-05-12 13:03:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:36,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:36,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-05-12 13:03:36,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175 [2024-05-12 13:03:36,799 INFO L175 Difference]: Start difference. First operand has 273 places, 363 transitions, 3891 flow. Second operand 8 states and 207 transitions. [2024-05-12 13:03:36,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 405 transitions, 4755 flow [2024-05-12 13:03:38,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 405 transitions, 4422 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-05-12 13:03:38,529 INFO L231 Difference]: Finished difference. Result has 273 places, 366 transitions, 3678 flow [2024-05-12 13:03:38,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3678, PETRI_PLACES=273, PETRI_TRANSITIONS=366} [2024-05-12 13:03:38,529 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 217 predicate places. [2024-05-12 13:03:38,530 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 366 transitions, 3678 flow [2024-05-12 13:03:38,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:38,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:38,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:03:38,541 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:38,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1597264266, now seen corresponding path program 1 times [2024-05-12 13:03:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136925530] [2024-05-12 13:03:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:39,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:39,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136925530] [2024-05-12 13:03:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136925530] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:39,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:03:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928005530] [2024-05-12 13:03:39,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:03:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:03:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:03:39,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:03:39,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 366 transitions, 3678 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:39,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:39,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:03:39,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:42,145 INFO L124 PetriNetUnfolderBase]: 7171/12035 cut-off events. [2024-05-12 13:03:42,145 INFO L125 PetriNetUnfolderBase]: For 925047/925092 co-relation queries the response was YES. [2024-05-12 13:03:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87164 conditions, 12035 events. 7171/12035 cut-off events. For 925047/925092 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 88078 event pairs, 2011 based on Foata normal form. 30/11672 useless extension candidates. Maximal degree in co-relation 87038. Up to 9954 conditions per place. [2024-05-12 13:03:42,358 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 305 selfloop transitions, 22 changer transitions 0/403 dead transitions. [2024-05-12 13:03:42,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 403 transitions, 4542 flow [2024-05-12 13:03:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-05-12 13:03:42,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075 [2024-05-12 13:03:42,360 INFO L175 Difference]: Start difference. First operand has 273 places, 366 transitions, 3678 flow. Second operand 8 states and 203 transitions. [2024-05-12 13:03:42,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 403 transitions, 4542 flow [2024-05-12 13:03:43,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 403 transitions, 4444 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-05-12 13:03:43,903 INFO L231 Difference]: Finished difference. Result has 275 places, 369 transitions, 3704 flow [2024-05-12 13:03:43,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3704, PETRI_PLACES=275, PETRI_TRANSITIONS=369} [2024-05-12 13:03:43,904 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 219 predicate places. [2024-05-12 13:03:43,904 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 369 transitions, 3704 flow [2024-05-12 13:03:43,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:43,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:43,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:43,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:03:43,905 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:43,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1597264762, now seen corresponding path program 2 times [2024-05-12 13:03:43,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:43,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798303392] [2024-05-12 13:03:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:45,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:45,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798303392] [2024-05-12 13:03:45,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798303392] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:45,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:45,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:03:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835152033] [2024-05-12 13:03:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:03:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:45,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:03:45,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:03:45,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:03:45,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 369 transitions, 3704 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:45,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:45,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:03:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:47,468 INFO L124 PetriNetUnfolderBase]: 7214/12112 cut-off events. [2024-05-12 13:03:47,468 INFO L125 PetriNetUnfolderBase]: For 952787/952839 co-relation queries the response was YES. [2024-05-12 13:03:47,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88578 conditions, 12112 events. 7214/12112 cut-off events. For 952787/952839 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 88737 event pairs, 2009 based on Foata normal form. 30/11744 useless extension candidates. Maximal degree in co-relation 88451. Up to 9900 conditions per place. [2024-05-12 13:03:47,682 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 295 selfloop transitions, 39 changer transitions 0/410 dead transitions. [2024-05-12 13:03:47,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 410 transitions, 4802 flow [2024-05-12 13:03:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-05-12 13:03:47,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-05-12 13:03:47,683 INFO L175 Difference]: Start difference. First operand has 275 places, 369 transitions, 3704 flow. Second operand 8 states and 206 transitions. [2024-05-12 13:03:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 410 transitions, 4802 flow [2024-05-12 13:03:49,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 410 transitions, 4700 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-05-12 13:03:49,418 INFO L231 Difference]: Finished difference. Result has 277 places, 375 transitions, 3812 flow [2024-05-12 13:03:49,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3602, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3812, PETRI_PLACES=277, PETRI_TRANSITIONS=375} [2024-05-12 13:03:49,419 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 221 predicate places. [2024-05-12 13:03:49,419 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 375 transitions, 3812 flow [2024-05-12 13:03:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:49,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:49,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:03:49,420 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:49,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1597278712, now seen corresponding path program 3 times [2024-05-12 13:03:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:49,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239276316] [2024-05-12 13:03:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:50,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239276316] [2024-05-12 13:03:50,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239276316] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:50,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:50,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:03:50,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177465127] [2024-05-12 13:03:50,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:03:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:03:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:03:50,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-05-12 13:03:50,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 375 transitions, 3812 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:50,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:50,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-05-12 13:03:50,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:53,225 INFO L124 PetriNetUnfolderBase]: 7210/12106 cut-off events. [2024-05-12 13:03:53,226 INFO L125 PetriNetUnfolderBase]: For 968561/968614 co-relation queries the response was YES. [2024-05-12 13:03:53,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89217 conditions, 12106 events. 7210/12106 cut-off events. For 968561/968614 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 88735 event pairs, 2014 based on Foata normal form. 31/11740 useless extension candidates. Maximal degree in co-relation 89089. Up to 9941 conditions per place. [2024-05-12 13:03:53,528 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 302 selfloop transitions, 31 changer transitions 0/409 dead transitions. [2024-05-12 13:03:53,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 409 transitions, 4622 flow [2024-05-12 13:03:53,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:03:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:03:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-05-12 13:03:53,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-05-12 13:03:53,531 INFO L175 Difference]: Start difference. First operand has 277 places, 375 transitions, 3812 flow. Second operand 8 states and 204 transitions. [2024-05-12 13:03:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 409 transitions, 4622 flow [2024-05-12 13:03:55,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 409 transitions, 4493 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-05-12 13:03:55,071 INFO L231 Difference]: Finished difference. Result has 281 places, 375 transitions, 3751 flow [2024-05-12 13:03:55,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3683, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3751, PETRI_PLACES=281, PETRI_TRANSITIONS=375} [2024-05-12 13:03:55,073 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 225 predicate places. [2024-05-12 13:03:55,073 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 375 transitions, 3751 flow [2024-05-12 13:03:55,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:55,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:03:55,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:03:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:03:55,073 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:03:55,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:03:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash 938490186, now seen corresponding path program 11 times [2024-05-12 13:03:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:03:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250821196] [2024-05-12 13:03:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:03:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:03:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:03:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:03:56,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:03:56,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250821196] [2024-05-12 13:03:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250821196] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:03:56,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:03:56,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:03:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765992567] [2024-05-12 13:03:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:03:56,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:03:56,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:03:56,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:03:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:03:56,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:03:56,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 375 transitions, 3751 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:03:56,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:03:56,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:03:56,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:03:59,381 INFO L124 PetriNetUnfolderBase]: 8216/13471 cut-off events. [2024-05-12 13:03:59,381 INFO L125 PetriNetUnfolderBase]: For 1075457/1075457 co-relation queries the response was YES. [2024-05-12 13:03:59,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99083 conditions, 13471 events. 8216/13471 cut-off events. For 1075457/1075457 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 96198 event pairs, 1957 based on Foata normal form. 20/13169 useless extension candidates. Maximal degree in co-relation 98953. Up to 10349 conditions per place. [2024-05-12 13:03:59,729 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 304 selfloop transitions, 134 changer transitions 0/448 dead transitions. [2024-05-12 13:03:59,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 448 transitions, 5079 flow [2024-05-12 13:03:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:03:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:03:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-05-12 13:03:59,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-05-12 13:03:59,738 INFO L175 Difference]: Start difference. First operand has 281 places, 375 transitions, 3751 flow. Second operand 10 states and 265 transitions. [2024-05-12 13:03:59,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 448 transitions, 5079 flow [2024-05-12 13:04:01,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 448 transitions, 4995 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 13:04:01,854 INFO L231 Difference]: Finished difference. Result has 284 places, 376 transitions, 4020 flow [2024-05-12 13:04:01,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3667, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4020, PETRI_PLACES=284, PETRI_TRANSITIONS=376} [2024-05-12 13:04:01,854 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 228 predicate places. [2024-05-12 13:04:01,854 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 376 transitions, 4020 flow [2024-05-12 13:04:01,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:01,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:01,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:01,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:04:01,855 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:01,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:01,856 INFO L85 PathProgramCache]: Analyzing trace with hash -368721934, now seen corresponding path program 12 times [2024-05-12 13:04:01,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:01,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122631845] [2024-05-12 13:04:01,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:01,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:02,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122631845] [2024-05-12 13:04:02,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122631845] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:02,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:02,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783792385] [2024-05-12 13:04:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:02,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:02,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:02,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 376 transitions, 4020 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:02,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:02,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:02,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:06,505 INFO L124 PetriNetUnfolderBase]: 8383/13736 cut-off events. [2024-05-12 13:04:06,506 INFO L125 PetriNetUnfolderBase]: For 1145801/1145801 co-relation queries the response was YES. [2024-05-12 13:04:06,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103519 conditions, 13736 events. 8383/13736 cut-off events. For 1145801/1145801 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 98402 event pairs, 1961 based on Foata normal form. 20/13436 useless extension candidates. Maximal degree in co-relation 103388. Up to 10606 conditions per place. [2024-05-12 13:04:06,731 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 303 selfloop transitions, 137 changer transitions 0/450 dead transitions. [2024-05-12 13:04:06,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 450 transitions, 5356 flow [2024-05-12 13:04:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-05-12 13:04:06,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528 [2024-05-12 13:04:06,733 INFO L175 Difference]: Start difference. First operand has 284 places, 376 transitions, 4020 flow. Second operand 10 states and 264 transitions. [2024-05-12 13:04:06,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 450 transitions, 5356 flow [2024-05-12 13:04:09,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 450 transitions, 5033 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:09,076 INFO L231 Difference]: Finished difference. Result has 286 places, 377 transitions, 4058 flow [2024-05-12 13:04:09,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4058, PETRI_PLACES=286, PETRI_TRANSITIONS=377} [2024-05-12 13:04:09,077 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 230 predicate places. [2024-05-12 13:04:09,077 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 377 transitions, 4058 flow [2024-05-12 13:04:09,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:09,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:09,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:09,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:04:09,078 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:09,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1672622872, now seen corresponding path program 13 times [2024-05-12 13:04:09,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:09,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079256554] [2024-05-12 13:04:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:10,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:10,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079256554] [2024-05-12 13:04:10,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079256554] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:10,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:10,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722728402] [2024-05-12 13:04:10,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:10,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:10,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:10,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 377 transitions, 4058 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:10,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:10,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:10,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:14,302 INFO L124 PetriNetUnfolderBase]: 8550/14066 cut-off events. [2024-05-12 13:04:14,302 INFO L125 PetriNetUnfolderBase]: For 1177753/1177753 co-relation queries the response was YES. [2024-05-12 13:04:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105640 conditions, 14066 events. 8550/14066 cut-off events. For 1177753/1177753 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 101654 event pairs, 2003 based on Foata normal form. 20/13744 useless extension candidates. Maximal degree in co-relation 105508. Up to 10863 conditions per place. [2024-05-12 13:04:14,818 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 288 selfloop transitions, 148 changer transitions 0/446 dead transitions. [2024-05-12 13:04:14,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 446 transitions, 5354 flow [2024-05-12 13:04:14,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-05-12 13:04:14,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522 [2024-05-12 13:04:14,819 INFO L175 Difference]: Start difference. First operand has 286 places, 377 transitions, 4058 flow. Second operand 10 states and 261 transitions. [2024-05-12 13:04:14,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 446 transitions, 5354 flow [2024-05-12 13:04:17,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 446 transitions, 5023 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:17,055 INFO L231 Difference]: Finished difference. Result has 288 places, 378 transitions, 4112 flow [2024-05-12 13:04:17,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3727, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4112, PETRI_PLACES=288, PETRI_TRANSITIONS=378} [2024-05-12 13:04:17,056 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 232 predicate places. [2024-05-12 13:04:17,056 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 378 transitions, 4112 flow [2024-05-12 13:04:17,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:17,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:17,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:17,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:04:17,057 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:17,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:17,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1286650430, now seen corresponding path program 14 times [2024-05-12 13:04:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:17,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12641467] [2024-05-12 13:04:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:17,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:18,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12641467] [2024-05-12 13:04:18,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12641467] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:18,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621739815] [2024-05-12 13:04:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:18,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:18,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:18,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:18,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 378 transitions, 4112 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:18,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:22,191 INFO L124 PetriNetUnfolderBase]: 8717/14339 cut-off events. [2024-05-12 13:04:22,192 INFO L125 PetriNetUnfolderBase]: For 1209870/1209870 co-relation queries the response was YES. [2024-05-12 13:04:22,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107756 conditions, 14339 events. 8717/14339 cut-off events. For 1209870/1209870 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 103859 event pairs, 2044 based on Foata normal form. 20/14018 useless extension candidates. Maximal degree in co-relation 107623. Up to 11120 conditions per place. [2024-05-12 13:04:22,445 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 303 selfloop transitions, 139 changer transitions 0/452 dead transitions. [2024-05-12 13:04:22,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 452 transitions, 5456 flow [2024-05-12 13:04:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-05-12 13:04:22,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526 [2024-05-12 13:04:22,447 INFO L175 Difference]: Start difference. First operand has 288 places, 378 transitions, 4112 flow. Second operand 10 states and 263 transitions. [2024-05-12 13:04:22,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 452 transitions, 5456 flow [2024-05-12 13:04:24,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 452 transitions, 5101 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:24,730 INFO L231 Difference]: Finished difference. Result has 290 places, 379 transitions, 4126 flow [2024-05-12 13:04:24,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3757, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4126, PETRI_PLACES=290, PETRI_TRANSITIONS=379} [2024-05-12 13:04:24,730 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 234 predicate places. [2024-05-12 13:04:24,731 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 379 transitions, 4126 flow [2024-05-12 13:04:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:24,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:24,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:24,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:04:24,731 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:24,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash 739040526, now seen corresponding path program 15 times [2024-05-12 13:04:24,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:24,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513961233] [2024-05-12 13:04:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:25,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:25,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513961233] [2024-05-12 13:04:25,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513961233] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:25,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:25,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:25,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940804264] [2024-05-12 13:04:25,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:25,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:25,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:25,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:25,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:26,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:26,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 379 transitions, 4126 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:26,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:26,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:26,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:29,837 INFO L124 PetriNetUnfolderBase]: 8757/14279 cut-off events. [2024-05-12 13:04:29,838 INFO L125 PetriNetUnfolderBase]: For 1172242/1172242 co-relation queries the response was YES. [2024-05-12 13:04:29,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106470 conditions, 14279 events. 8757/14279 cut-off events. For 1172242/1172242 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 102392 event pairs, 1966 based on Foata normal form. 16/13987 useless extension candidates. Maximal degree in co-relation 106336. Up to 10310 conditions per place. [2024-05-12 13:04:30,067 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 302 selfloop transitions, 144 changer transitions 0/456 dead transitions. [2024-05-12 13:04:30,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 456 transitions, 5502 flow [2024-05-12 13:04:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-05-12 13:04:30,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-05-12 13:04:30,069 INFO L175 Difference]: Start difference. First operand has 290 places, 379 transitions, 4126 flow. Second operand 10 states and 265 transitions. [2024-05-12 13:04:30,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 456 transitions, 5502 flow [2024-05-12 13:04:33,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 456 transitions, 5163 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:33,036 INFO L231 Difference]: Finished difference. Result has 292 places, 380 transitions, 4167 flow [2024-05-12 13:04:33,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3787, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4167, PETRI_PLACES=292, PETRI_TRANSITIONS=380} [2024-05-12 13:04:33,037 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 236 predicate places. [2024-05-12 13:04:33,037 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 380 transitions, 4167 flow [2024-05-12 13:04:33,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:33,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:33,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:33,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:04:33,038 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:33,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash 441448898, now seen corresponding path program 3 times [2024-05-12 13:04:33,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991101702] [2024-05-12 13:04:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:33,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:34,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:34,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991101702] [2024-05-12 13:04:34,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991101702] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:34,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:34,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:34,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555427010] [2024-05-12 13:04:34,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:34,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:34,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:34,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:34,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:34,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:34,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 380 transitions, 4167 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:34,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:34,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:34,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:37,204 INFO L124 PetriNetUnfolderBase]: 8754/14486 cut-off events. [2024-05-12 13:04:37,204 INFO L125 PetriNetUnfolderBase]: For 1106031/1106055 co-relation queries the response was YES. [2024-05-12 13:04:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105230 conditions, 14486 events. 8754/14486 cut-off events. For 1106031/1106055 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 106019 event pairs, 2416 based on Foata normal form. 17/14157 useless extension candidates. Maximal degree in co-relation 105095. Up to 12626 conditions per place. [2024-05-12 13:04:37,665 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 367 selfloop transitions, 33 changer transitions 0/410 dead transitions. [2024-05-12 13:04:37,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 410 transitions, 5085 flow [2024-05-12 13:04:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:04:37,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-05-12 13:04:37,666 INFO L175 Difference]: Start difference. First operand has 292 places, 380 transitions, 4167 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:04:37,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 410 transitions, 5085 flow [2024-05-12 13:04:39,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 410 transitions, 4673 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-05-12 13:04:39,951 INFO L231 Difference]: Finished difference. Result has 291 places, 380 transitions, 3828 flow [2024-05-12 13:04:39,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3828, PETRI_PLACES=291, PETRI_TRANSITIONS=380} [2024-05-12 13:04:39,952 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 235 predicate places. [2024-05-12 13:04:39,952 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 380 transitions, 3828 flow [2024-05-12 13:04:39,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:39,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:39,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:39,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:04:39,953 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:39,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:39,976 INFO L85 PathProgramCache]: Analyzing trace with hash 507707898, now seen corresponding path program 4 times [2024-05-12 13:04:39,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:39,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020593899] [2024-05-12 13:04:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:39,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:40,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:40,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020593899] [2024-05-12 13:04:40,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020593899] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:40,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:40,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:04:40,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605504017] [2024-05-12 13:04:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:40,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:04:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:40,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:04:40,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:04:41,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:41,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 380 transitions, 3828 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:41,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:41,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:41,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:44,199 INFO L124 PetriNetUnfolderBase]: 8771/14508 cut-off events. [2024-05-12 13:04:44,200 INFO L125 PetriNetUnfolderBase]: For 1080981/1081005 co-relation queries the response was YES. [2024-05-12 13:04:44,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102695 conditions, 14508 events. 8771/14508 cut-off events. For 1080981/1081005 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 106156 event pairs, 2410 based on Foata normal form. 17/14179 useless extension candidates. Maximal degree in co-relation 102559. Up to 12616 conditions per place. [2024-05-12 13:04:44,517 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 360 selfloop transitions, 41 changer transitions 0/411 dead transitions. [2024-05-12 13:04:44,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 411 transitions, 4842 flow [2024-05-12 13:04:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:04:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:04:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-05-12 13:04:44,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47714285714285715 [2024-05-12 13:04:44,518 INFO L175 Difference]: Start difference. First operand has 291 places, 380 transitions, 3828 flow. Second operand 7 states and 167 transitions. [2024-05-12 13:04:44,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 411 transitions, 4842 flow [2024-05-12 13:04:46,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 411 transitions, 4744 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 13:04:46,971 INFO L231 Difference]: Finished difference. Result has 292 places, 383 transitions, 3918 flow [2024-05-12 13:04:46,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3730, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3918, PETRI_PLACES=292, PETRI_TRANSITIONS=383} [2024-05-12 13:04:46,972 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 236 predicate places. [2024-05-12 13:04:46,972 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 383 transitions, 3918 flow [2024-05-12 13:04:46,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:46,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:46,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:46,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:04:46,973 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:46,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1672407391, now seen corresponding path program 6 times [2024-05-12 13:04:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:46,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326667660] [2024-05-12 13:04:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:04:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:04:48,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:04:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326667660] [2024-05-12 13:04:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326667660] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:04:48,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:04:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:04:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465369294] [2024-05-12 13:04:48,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:04:48,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:04:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:04:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:04:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:04:48,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2024-05-12 13:04:48,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 383 transitions, 3918 flow. Second operand has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:48,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:04:48,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2024-05-12 13:04:48,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:04:52,328 INFO L124 PetriNetUnfolderBase]: 8831/14641 cut-off events. [2024-05-12 13:04:52,328 INFO L125 PetriNetUnfolderBase]: For 1125905/1125908 co-relation queries the response was YES. [2024-05-12 13:04:52,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104560 conditions, 14641 events. 8831/14641 cut-off events. For 1125905/1125908 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 107515 event pairs, 2305 based on Foata normal form. 6/14288 useless extension candidates. Maximal degree in co-relation 104423. Up to 12038 conditions per place. [2024-05-12 13:04:52,575 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 315 selfloop transitions, 126 changer transitions 0/451 dead transitions. [2024-05-12 13:04:52,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 451 transitions, 5202 flow [2024-05-12 13:04:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:04:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:04:52,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-05-12 13:04:52,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508 [2024-05-12 13:04:52,576 INFO L175 Difference]: Start difference. First operand has 292 places, 383 transitions, 3918 flow. Second operand 10 states and 254 transitions. [2024-05-12 13:04:52,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 451 transitions, 5202 flow [2024-05-12 13:04:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 451 transitions, 5036 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-05-12 13:04:55,206 INFO L231 Difference]: Finished difference. Result has 298 places, 389 transitions, 4155 flow [2024-05-12 13:04:55,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4155, PETRI_PLACES=298, PETRI_TRANSITIONS=389} [2024-05-12 13:04:55,207 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 242 predicate places. [2024-05-12 13:04:55,207 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 389 transitions, 4155 flow [2024-05-12 13:04:55,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.363636363636363) internal successors, (158), 11 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:04:55,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:04:55,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:04:55,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:04:55,208 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:04:55,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:04:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -978161243, now seen corresponding path program 7 times [2024-05-12 13:04:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:04:55,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040954610] [2024-05-12 13:04:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:04:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:04:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat