./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/rfi002_tso.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/rfi002_tso.i ./goblint.2024-05-07_14-17-48.files/protection/rfi002_tso.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 12:38:22,394 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:38:22,457 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:38:22,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:38:22,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:38:22,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:38:22,497 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:38:22,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:38:22,498 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:38:22,501 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:38:22,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:38:22,501 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:38:22,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:38:22,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:38:22,503 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:38:22,504 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:38:22,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:38:22,504 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:38:22,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:38:22,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:38:22,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:38:22,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:38:22,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:38:22,505 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:38:22,505 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:38:22,506 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:38:22,506 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:38:22,506 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:38:22,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:38:22,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:38:22,507 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:38:22,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:38:22,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:38:22,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:38:22,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:38:22,508 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:38:22,508 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:38:22,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:38:22,509 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:38:22,509 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:38:22,509 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:38:22,509 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:38:22,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:38:22,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:38:22,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:38:22,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:38:22,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:38:22,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:38:22,734 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:38:22,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-05-12 12:38:23,744 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:38:23,928 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:38:23,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-05-12 12:38:23,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecbbb78a/397c302960cb46708d58a7d6c4c7ed80/FLAG3a43f84d9 [2024-05-12 12:38:23,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ecbbb78a/397c302960cb46708d58a7d6c4c7ed80 [2024-05-12 12:38:23,968 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:38:23,969 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:38:23,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/rfi002_tso.yml/witness.yml [2024-05-12 12:38:24,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:38:24,126 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:38:24,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:38:24,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:38:24,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:38:24,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:38:23" (1/2) ... [2024-05-12 12:38:24,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9cb19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:38:24, skipping insertion in model container [2024-05-12 12:38:24,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:38:23" (1/2) ... [2024-05-12 12:38:24,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c930382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:38:24, skipping insertion in model container [2024-05-12 12:38:24,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:38:24" (2/2) ... [2024-05-12 12:38:24,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9cb19 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:38:24, skipping insertion in model container [2024-05-12 12:38:24,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:38:24" (2/2) ... [2024-05-12 12:38:24,134 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:38:24,248 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:38:24,249 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-05-12 12:38:24,249 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-05-12 12:38:24,249 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:38:24,249 INFO L106 edCorrectnessWitness]: ghost_update [L877-L877] multithreaded = 1; [2024-05-12 12:38:24,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:38:24,394 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/rfi002_tso.i[987,1000] [2024-05-12 12:38:24,607 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:38:24,623 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 12:38:24,657 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/rfi002_tso.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:38:24,739 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:38:24,766 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:38:24,766 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:38:24 WrapperNode [2024-05-12 12:38:24,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:38:24,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:38:24,767 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:38:24,767 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:38:24,772 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,788 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,827 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 213 [2024-05-12 12:38:24,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:38:24,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:38:24,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:38:24,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:38:24,837 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,838 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,841 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,855 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 12:38:24,856 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,856 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,865 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,867 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,868 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,870 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:38:24,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:38:24,887 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:38:24,887 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:38:24,888 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 12:38:24" (1/1) ... [2024-05-12 12:38:24,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:38:24,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:38:24,927 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 12:38:24,942 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 12:38:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:38:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:38:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:38:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:38:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:38:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:38:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:38:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 12:38:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 12:38:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 12:38:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 12:38:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:38:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:38:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:38:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:38:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:38:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:38:24,965 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 12:38:25,115 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:38:25,116 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:38:25,527 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:38:25,527 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:38:25,680 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:38:25,680 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:38:25,681 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:38:25 BoogieIcfgContainer [2024-05-12 12:38:25,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:38:25,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:38:25,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:38:25,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:38:25,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:38:23" (1/4) ... [2024-05-12 12:38:25,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27661454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:38:25, skipping insertion in model container [2024-05-12 12:38:25,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:38:24" (2/4) ... [2024-05-12 12:38:25,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27661454 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:38:25, skipping insertion in model container [2024-05-12 12:38:25,687 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 12:38:24" (3/4) ... [2024-05-12 12:38:25,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27661454 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:38:25, skipping insertion in model container [2024-05-12 12:38:25,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:38:25" (4/4) ... [2024-05-12 12:38:25,688 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2024-05-12 12:38:25,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:38:25,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 12:38:25,702 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:38:25,743 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:38:25,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 40 transitions, 88 flow [2024-05-12 12:38:25,784 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2024-05-12 12:38:25,784 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:38:25,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-05-12 12:38:25,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 40 transitions, 88 flow [2024-05-12 12:38:25,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 38 transitions, 82 flow [2024-05-12 12:38:25,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:38:25,800 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;@7f756f31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:38:25,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 12:38:25,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:38:25,803 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:38:25,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:38:25,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:25,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:38:25,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:25,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1446033378, now seen corresponding path program 1 times [2024-05-12 12:38:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509656141] [2024-05-12 12:38:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:27,303 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 12:38:27,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:27,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509656141] [2024-05-12 12:38:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509656141] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:27,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:27,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:38:27,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561621059] [2024-05-12 12:38:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:38:27,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:27,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:38:27,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:38:27,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-05-12 12:38:27,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:38:27,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:27,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-05-12 12:38:27,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:27,718 INFO L124 PetriNetUnfolderBase]: 935/1531 cut-off events. [2024-05-12 12:38:27,718 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 12:38:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1531 events. 935/1531 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7769 event pairs, 431 based on Foata normal form. 71/1480 useless extension candidates. Maximal degree in co-relation 3061. Up to 1512 conditions per place. [2024-05-12 12:38:27,727 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 38 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2024-05-12 12:38:27,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 191 flow [2024-05-12 12:38:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:38:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:38:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-05-12 12:38:27,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-05-12 12:38:27,737 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 82 flow. Second operand 3 states and 73 transitions. [2024-05-12 12:38:27,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 191 flow [2024-05-12 12:38:27,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:27,741 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 106 flow [2024-05-12 12:38:27,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-05-12 12:38:27,744 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-05-12 12:38:27,745 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 106 flow [2024-05-12 12:38:27,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 12:38:27,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:27,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:27,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:38:27,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:27,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:27,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1931485173, now seen corresponding path program 1 times [2024-05-12 12:38:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:27,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791549116] [2024-05-12 12:38:27,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:28,949 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 12:38:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791549116] [2024-05-12 12:38:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791549116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:28,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:38:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010778125] [2024-05-12 12:38:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:38:28,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:38:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:38:28,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-05-12 12:38:28,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 12:38:28,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:28,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-05-12 12:38:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:29,305 INFO L124 PetriNetUnfolderBase]: 927/1705 cut-off events. [2024-05-12 12:38:29,305 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-05-12 12:38:29,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1705 events. 927/1705 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9796 event pairs, 475 based on Foata normal form. 4/1534 useless extension candidates. Maximal degree in co-relation 3506. Up to 1477 conditions per place. [2024-05-12 12:38:29,312 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 45 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-05-12 12:38:29,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 273 flow [2024-05-12 12:38:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:38:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:38:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-05-12 12:38:29,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-05-12 12:38:29,314 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 106 flow. Second operand 4 states and 89 transitions. [2024-05-12 12:38:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 273 flow [2024-05-12 12:38:29,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:38:29,315 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 174 flow [2024-05-12 12:38:29,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-05-12 12:38:29,316 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2024-05-12 12:38:29,316 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 174 flow [2024-05-12 12:38:29,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 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 12:38:29,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:29,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:29,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:38:29,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:29,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:29,318 INFO L85 PathProgramCache]: Analyzing trace with hash -257833360, now seen corresponding path program 1 times [2024-05-12 12:38:29,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:29,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616433995] [2024-05-12 12:38:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:29,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:29,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616433995] [2024-05-12 12:38:29,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616433995] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:29,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:29,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:38:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901311624] [2024-05-12 12:38:29,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:29,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:38:29,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:38:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:38:29,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-05-12 12:38:29,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 12:38:29,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:29,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-05-12 12:38:29,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:29,544 INFO L124 PetriNetUnfolderBase]: 507/1066 cut-off events. [2024-05-12 12:38:29,544 INFO L125 PetriNetUnfolderBase]: For 200/211 co-relation queries the response was YES. [2024-05-12 12:38:29,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 1066 events. 507/1066 cut-off events. For 200/211 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6264 event pairs, 224 based on Foata normal form. 7/960 useless extension candidates. Maximal degree in co-relation 2189. Up to 780 conditions per place. [2024-05-12 12:38:29,549 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 35 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2024-05-12 12:38:29,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 252 flow [2024-05-12 12:38:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:38:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:38:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-05-12 12:38:29,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-05-12 12:38:29,551 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 174 flow. Second operand 3 states and 77 transitions. [2024-05-12 12:38:29,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 252 flow [2024-05-12 12:38:29,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 250 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-05-12 12:38:29,553 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 156 flow [2024-05-12 12:38:29,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-05-12 12:38:29,554 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-05-12 12:38:29,554 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 156 flow [2024-05-12 12:38:29,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 12:38:29,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:29,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:29,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:38:29,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:29,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:29,555 INFO L85 PathProgramCache]: Analyzing trace with hash 736065202, now seen corresponding path program 1 times [2024-05-12 12:38:29,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637971036] [2024-05-12 12:38:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:29,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:31,686 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 12:38:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637971036] [2024-05-12 12:38:31,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637971036] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:31,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:31,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:38:31,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707255944] [2024-05-12 12:38:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:31,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:38:31,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:38:31,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:38:31,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-05-12 12:38:31,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 12:38:31,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:31,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-05-12 12:38:31,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:32,215 INFO L124 PetriNetUnfolderBase]: 827/1545 cut-off events. [2024-05-12 12:38:32,215 INFO L125 PetriNetUnfolderBase]: For 641/641 co-relation queries the response was YES. [2024-05-12 12:38:32,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 1545 events. 827/1545 cut-off events. For 641/641 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8648 event pairs, 295 based on Foata normal form. 4/1428 useless extension candidates. Maximal degree in co-relation 3418. Up to 1264 conditions per place. [2024-05-12 12:38:32,223 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 57 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-05-12 12:38:32,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 376 flow [2024-05-12 12:38:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:38:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:38:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-05-12 12:38:32,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-05-12 12:38:32,225 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 156 flow. Second operand 5 states and 111 transitions. [2024-05-12 12:38:32,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 376 flow [2024-05-12 12:38:32,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:32,227 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 206 flow [2024-05-12 12:38:32,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-05-12 12:38:32,228 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2024-05-12 12:38:32,228 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 206 flow [2024-05-12 12:38:32,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 12:38:32,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:32,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:32,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:38:32,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:32,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:32,229 INFO L85 PathProgramCache]: Analyzing trace with hash 597100981, now seen corresponding path program 1 times [2024-05-12 12:38:32,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:32,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50102441] [2024-05-12 12:38:32,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:32,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:32,288 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 12:38:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50102441] [2024-05-12 12:38:32,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50102441] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:32,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:32,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:38:32,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114866961] [2024-05-12 12:38:32,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:32,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:38:32,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:38:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:38:32,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-05-12 12:38:32,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:32,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:32,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-05-12 12:38:32,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:32,440 INFO L124 PetriNetUnfolderBase]: 485/974 cut-off events. [2024-05-12 12:38:32,440 INFO L125 PetriNetUnfolderBase]: For 532/543 co-relation queries the response was YES. [2024-05-12 12:38:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 974 events. 485/974 cut-off events. For 532/543 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5515 event pairs, 98 based on Foata normal form. 7/956 useless extension candidates. Maximal degree in co-relation 2245. Up to 629 conditions per place. [2024-05-12 12:38:32,445 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 40 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-05-12 12:38:32,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 314 flow [2024-05-12 12:38:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:38:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:38:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-05-12 12:38:32,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-05-12 12:38:32,447 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 206 flow. Second operand 3 states and 76 transitions. [2024-05-12 12:38:32,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 314 flow [2024-05-12 12:38:32,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 303 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 12:38:32,449 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 197 flow [2024-05-12 12:38:32,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-05-12 12:38:32,449 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2024-05-12 12:38:32,450 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 197 flow [2024-05-12 12:38:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:32,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:32,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:32,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:38:32,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:32,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1330260522, now seen corresponding path program 1 times [2024-05-12 12:38:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:32,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95369935] [2024-05-12 12:38:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:32,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:33,497 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 12:38:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95369935] [2024-05-12 12:38:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95369935] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:33,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:38:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370854484] [2024-05-12 12:38:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:33,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 12:38:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 12:38:33,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 12:38:33,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:33,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 12:38:33,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:33,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:33,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:33,965 INFO L124 PetriNetUnfolderBase]: 832/1510 cut-off events. [2024-05-12 12:38:33,965 INFO L125 PetriNetUnfolderBase]: For 909/909 co-relation queries the response was YES. [2024-05-12 12:38:33,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 1510 events. 832/1510 cut-off events. For 909/909 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7909 event pairs, 435 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 3690. Up to 1340 conditions per place. [2024-05-12 12:38:33,972 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 50 selfloop transitions, 7 changer transitions 2/65 dead transitions. [2024-05-12 12:38:33,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 373 flow [2024-05-12 12:38:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:38:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:38:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-05-12 12:38:33,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-05-12 12:38:33,974 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 197 flow. Second operand 5 states and 88 transitions. [2024-05-12 12:38:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 373 flow [2024-05-12 12:38:33,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:33,976 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 250 flow [2024-05-12 12:38:33,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-05-12 12:38:33,977 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2024-05-12 12:38:33,977 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 250 flow [2024-05-12 12:38:33,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 12:38:33,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:33,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:33,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:38:33,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:33,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:33,978 INFO L85 PathProgramCache]: Analyzing trace with hash -602796997, now seen corresponding path program 1 times [2024-05-12 12:38:33,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:33,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192944210] [2024-05-12 12:38:33,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:33,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192944210] [2024-05-12 12:38:36,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192944210] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:38:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77962670] [2024-05-12 12:38:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:38:36,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:38:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:38:36,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-05-12 12:38:36,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 12:38:36,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:36,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-05-12 12:38:36,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:37,148 INFO L124 PetriNetUnfolderBase]: 636/1223 cut-off events. [2024-05-12 12:38:37,149 INFO L125 PetriNetUnfolderBase]: For 1147/1147 co-relation queries the response was YES. [2024-05-12 12:38:37,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 1223 events. 636/1223 cut-off events. For 1147/1147 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6595 event pairs, 136 based on Foata normal form. 4/1169 useless extension candidates. Maximal degree in co-relation 3145. Up to 940 conditions per place. [2024-05-12 12:38:37,155 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 58 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-05-12 12:38:37,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 470 flow [2024-05-12 12:38:37,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:38:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:38:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-05-12 12:38:37,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-05-12 12:38:37,158 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 250 flow. Second operand 6 states and 121 transitions. [2024-05-12 12:38:37,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 470 flow [2024-05-12 12:38:37,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 461 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:37,161 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 284 flow [2024-05-12 12:38:37,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-05-12 12:38:37,162 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-05-12 12:38:37,163 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 284 flow [2024-05-12 12:38:37,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 12:38:37,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:37,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:38:37,163 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:37,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1743942139, now seen corresponding path program 1 times [2024-05-12 12:38:37,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:37,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061900949] [2024-05-12 12:38:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:37,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:38,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:38,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061900949] [2024-05-12 12:38:38,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061900949] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:38,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:38,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:38:38,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242810703] [2024-05-12 12:38:38,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:38,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:38:38,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:38,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:38:38,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:38:38,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:38,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:38:38,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:38,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:38,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:38,984 INFO L124 PetriNetUnfolderBase]: 736/1365 cut-off events. [2024-05-12 12:38:38,984 INFO L125 PetriNetUnfolderBase]: For 1716/1716 co-relation queries the response was YES. [2024-05-12 12:38:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3725 conditions, 1365 events. 736/1365 cut-off events. For 1716/1716 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7146 event pairs, 358 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 3698. Up to 1183 conditions per place. [2024-05-12 12:38:38,991 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 56 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2024-05-12 12:38:38,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 474 flow [2024-05-12 12:38:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:38:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:38:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-05-12 12:38:38,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-05-12 12:38:38,997 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 284 flow. Second operand 6 states and 99 transitions. [2024-05-12 12:38:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 474 flow [2024-05-12 12:38:38,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 439 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 12:38:39,000 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 308 flow [2024-05-12 12:38:39,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-05-12 12:38:39,002 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 19 predicate places. [2024-05-12 12:38:39,002 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 308 flow [2024-05-12 12:38:39,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:38:39,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:39,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:39,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:38:39,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:39,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:39,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1765663557, now seen corresponding path program 1 times [2024-05-12 12:38:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:39,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387984256] [2024-05-12 12:38:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:39,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:40,127 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 12:38:40,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387984256] [2024-05-12 12:38:40,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387984256] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:40,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:40,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:38:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101384234] [2024-05-12 12:38:40,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:40,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:38:40,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:40,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:38:40,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:38:40,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:40,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:38:40,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:40,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:40,714 INFO L124 PetriNetUnfolderBase]: 758/1400 cut-off events. [2024-05-12 12:38:40,715 INFO L125 PetriNetUnfolderBase]: For 2099/2099 co-relation queries the response was YES. [2024-05-12 12:38:40,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 1400 events. 758/1400 cut-off events. For 2099/2099 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7393 event pairs, 265 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 3947. Up to 1183 conditions per place. [2024-05-12 12:38:40,724 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 60 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-05-12 12:38:40,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 549 flow [2024-05-12 12:38:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:38:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:38:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-05-12 12:38:40,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-05-12 12:38:40,726 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 308 flow. Second operand 6 states and 106 transitions. [2024-05-12 12:38:40,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 549 flow [2024-05-12 12:38:40,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 530 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-05-12 12:38:40,732 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 382 flow [2024-05-12 12:38:40,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-05-12 12:38:40,733 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2024-05-12 12:38:40,733 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 382 flow [2024-05-12 12:38:40,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:38:40,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:40,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:40,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:38:40,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:40,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:40,740 INFO L85 PathProgramCache]: Analyzing trace with hash -554978265, now seen corresponding path program 2 times [2024-05-12 12:38:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:40,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835466686] [2024-05-12 12:38:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:40,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:41,890 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 12:38:41,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:41,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835466686] [2024-05-12 12:38:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835466686] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:41,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:41,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:38:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236533395] [2024-05-12 12:38:41,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:38:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:38:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:38:41,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:41,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:38:41,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:41,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:41,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:42,378 INFO L124 PetriNetUnfolderBase]: 768/1440 cut-off events. [2024-05-12 12:38:42,378 INFO L125 PetriNetUnfolderBase]: For 3078/3081 co-relation queries the response was YES. [2024-05-12 12:38:42,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 1440 events. 768/1440 cut-off events. For 3078/3081 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7749 event pairs, 262 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 4407. Up to 1158 conditions per place. [2024-05-12 12:38:42,386 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 62 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-05-12 12:38:42,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 696 flow [2024-05-12 12:38:42,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:38:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:38:42,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-05-12 12:38:42,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-05-12 12:38:42,388 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 382 flow. Second operand 6 states and 106 transitions. [2024-05-12 12:38:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 696 flow [2024-05-12 12:38:42,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 669 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:42,395 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 502 flow [2024-05-12 12:38:42,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2024-05-12 12:38:42,396 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-05-12 12:38:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 502 flow [2024-05-12 12:38:42,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 12:38:42,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:42,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:38:42,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:42,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:42,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1552899777, now seen corresponding path program 1 times [2024-05-12 12:38:42,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:42,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425396088] [2024-05-12 12:38:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:42,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:44,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:44,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425396088] [2024-05-12 12:38:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425396088] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:44,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:44,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:38:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101909350] [2024-05-12 12:38:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:44,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:38:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:38:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:38:44,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:44,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 502 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:44,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:44,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:44,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:44,679 INFO L124 PetriNetUnfolderBase]: 771/1445 cut-off events. [2024-05-12 12:38:44,679 INFO L125 PetriNetUnfolderBase]: For 4028/4028 co-relation queries the response was YES. [2024-05-12 12:38:44,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 1445 events. 771/1445 cut-off events. For 4028/4028 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7731 event pairs, 290 based on Foata normal form. 1/1384 useless extension candidates. Maximal degree in co-relation 4741. Up to 1223 conditions per place. [2024-05-12 12:38:44,689 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 78 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-05-12 12:38:44,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 766 flow [2024-05-12 12:38:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:38:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:38:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-05-12 12:38:44,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-05-12 12:38:44,691 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 502 flow. Second operand 7 states and 115 transitions. [2024-05-12 12:38:44,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 766 flow [2024-05-12 12:38:44,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 96 transitions, 720 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 12:38:44,696 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 505 flow [2024-05-12 12:38:44,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=505, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-05-12 12:38:44,697 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 32 predicate places. [2024-05-12 12:38:44,697 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 505 flow [2024-05-12 12:38:44,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:44,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:44,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:44,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:38:44,698 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:44,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1099153621, now seen corresponding path program 1 times [2024-05-12 12:38:44,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:44,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437258012] [2024-05-12 12:38:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:44,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:46,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:46,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437258012] [2024-05-12 12:38:46,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437258012] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:46,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:46,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:38:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378020225] [2024-05-12 12:38:46,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:38:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:38:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:38:46,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:46,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 505 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:46,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:46,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:46,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:46,692 INFO L124 PetriNetUnfolderBase]: 773/1451 cut-off events. [2024-05-12 12:38:46,693 INFO L125 PetriNetUnfolderBase]: For 4295/4295 co-relation queries the response was YES. [2024-05-12 12:38:46,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 1451 events. 773/1451 cut-off events. For 4295/4295 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7771 event pairs, 291 based on Foata normal form. 1/1389 useless extension candidates. Maximal degree in co-relation 4825. Up to 1197 conditions per place. [2024-05-12 12:38:46,705 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 71 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2024-05-12 12:38:46,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 804 flow [2024-05-12 12:38:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:38:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:38:46,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-05-12 12:38:46,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-05-12 12:38:46,707 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 505 flow. Second operand 6 states and 107 transitions. [2024-05-12 12:38:46,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 804 flow [2024-05-12 12:38:46,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 763 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 12:38:46,717 INFO L231 Difference]: Finished difference. Result has 78 places, 82 transitions, 598 flow [2024-05-12 12:38:46,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=598, PETRI_PLACES=78, PETRI_TRANSITIONS=82} [2024-05-12 12:38:46,718 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 34 predicate places. [2024-05-12 12:38:46,718 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 82 transitions, 598 flow [2024-05-12 12:38:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:46,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:46,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:46,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:38:46,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:46,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:46,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1099002682, now seen corresponding path program 1 times [2024-05-12 12:38:46,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:46,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567342110] [2024-05-12 12:38:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:46,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:48,048 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 12:38:48,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:48,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567342110] [2024-05-12 12:38:48,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567342110] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:48,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:48,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:38:48,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054176866] [2024-05-12 12:38:48,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:48,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:38:48,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:38:48,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:38:48,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:48,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 82 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:48,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:48,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:48,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:48,567 INFO L124 PetriNetUnfolderBase]: 793/1483 cut-off events. [2024-05-12 12:38:48,567 INFO L125 PetriNetUnfolderBase]: For 5187/5187 co-relation queries the response was YES. [2024-05-12 12:38:48,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5117 conditions, 1483 events. 793/1483 cut-off events. For 5187/5187 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7916 event pairs, 293 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 5079. Up to 1225 conditions per place. [2024-05-12 12:38:48,577 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 90 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2024-05-12 12:38:48,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 113 transitions, 971 flow [2024-05-12 12:38:48,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:38:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:38:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 12:38:48,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-05-12 12:38:48,580 INFO L175 Difference]: Start difference. First operand has 78 places, 82 transitions, 598 flow. Second operand 7 states and 118 transitions. [2024-05-12 12:38:48,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 113 transitions, 971 flow [2024-05-12 12:38:48,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 113 transitions, 944 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:48,587 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 748 flow [2024-05-12 12:38:48,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=748, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-05-12 12:38:48,588 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 42 predicate places. [2024-05-12 12:38:48,588 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 748 flow [2024-05-12 12:38:48,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:48,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:48,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:48,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:38:48,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:48,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:48,589 INFO L85 PathProgramCache]: Analyzing trace with hash -895589204, now seen corresponding path program 2 times [2024-05-12 12:38:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:48,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959957875] [2024-05-12 12:38:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:49,947 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 12:38:49,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959957875] [2024-05-12 12:38:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959957875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:49,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:38:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742328246] [2024-05-12 12:38:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:49,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:38:49,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:38:49,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:38:50,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:50,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 748 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:50,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:50,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:50,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:50,585 INFO L124 PetriNetUnfolderBase]: 813/1514 cut-off events. [2024-05-12 12:38:50,585 INFO L125 PetriNetUnfolderBase]: For 6931/6940 co-relation queries the response was YES. [2024-05-12 12:38:50,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5586 conditions, 1514 events. 813/1514 cut-off events. For 6931/6940 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8079 event pairs, 298 based on Foata normal form. 4/1454 useless extension candidates. Maximal degree in co-relation 5543. Up to 1227 conditions per place. [2024-05-12 12:38:50,594 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 90 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-05-12 12:38:50,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 120 transitions, 1112 flow [2024-05-12 12:38:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:38:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:38:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 12:38:50,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-05-12 12:38:50,596 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 748 flow. Second operand 7 states and 118 transitions. [2024-05-12 12:38:50,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 120 transitions, 1112 flow [2024-05-12 12:38:50,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 120 transitions, 1074 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 12:38:50,604 INFO L231 Difference]: Finished difference. Result has 93 places, 101 transitions, 878 flow [2024-05-12 12:38:50,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=93, PETRI_TRANSITIONS=101} [2024-05-12 12:38:50,605 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 49 predicate places. [2024-05-12 12:38:50,605 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 101 transitions, 878 flow [2024-05-12 12:38:50,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:50,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:50,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:50,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:38:50,606 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:50,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:50,606 INFO L85 PathProgramCache]: Analyzing trace with hash -891100252, now seen corresponding path program 3 times [2024-05-12 12:38:50,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:50,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646920331] [2024-05-12 12:38:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:50,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:51,983 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 12:38:51,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:51,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646920331] [2024-05-12 12:38:51,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646920331] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:51,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:51,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:38:51,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311749974] [2024-05-12 12:38:51,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 12:38:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 12:38:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 12:38:52,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:52,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 101 transitions, 878 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:52,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:52,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:52,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:52,515 INFO L124 PetriNetUnfolderBase]: 825/1532 cut-off events. [2024-05-12 12:38:52,515 INFO L125 PetriNetUnfolderBase]: For 9034/9043 co-relation queries the response was YES. [2024-05-12 12:38:52,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 1532 events. 825/1532 cut-off events. For 9034/9043 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 8256 event pairs, 278 based on Foata normal form. 4/1472 useless extension candidates. Maximal degree in co-relation 6015. Up to 1189 conditions per place. [2024-05-12 12:38:52,528 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 90 selfloop transitions, 34 changer transitions 0/130 dead transitions. [2024-05-12 12:38:52,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 1306 flow [2024-05-12 12:38:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:38:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:38:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-05-12 12:38:52,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-05-12 12:38:52,531 INFO L175 Difference]: Start difference. First operand has 93 places, 101 transitions, 878 flow. Second operand 7 states and 121 transitions. [2024-05-12 12:38:52,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 1306 flow [2024-05-12 12:38:52,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 1244 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-05-12 12:38:52,544 INFO L231 Difference]: Finished difference. Result has 98 places, 109 transitions, 993 flow [2024-05-12 12:38:52,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=993, PETRI_PLACES=98, PETRI_TRANSITIONS=109} [2024-05-12 12:38:52,545 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-05-12 12:38:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 109 transitions, 993 flow [2024-05-12 12:38:52,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 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 12:38:52,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:52,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 12:38:52,546 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:52,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:52,546 INFO L85 PathProgramCache]: Analyzing trace with hash -891088348, now seen corresponding path program 1 times [2024-05-12 12:38:52,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:52,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670601039] [2024-05-12 12:38:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:52,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670601039] [2024-05-12 12:38:54,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670601039] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:54,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:54,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:38:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530757104] [2024-05-12 12:38:54,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:54,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:38:54,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:38:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:38:54,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:54,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 109 transitions, 993 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:54,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:54,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:54,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:55,469 INFO L124 PetriNetUnfolderBase]: 828/1534 cut-off events. [2024-05-12 12:38:55,470 INFO L125 PetriNetUnfolderBase]: For 9723/9723 co-relation queries the response was YES. [2024-05-12 12:38:55,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6346 conditions, 1534 events. 828/1534 cut-off events. For 9723/9723 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 8252 event pairs, 284 based on Foata normal form. 1/1472 useless extension candidates. Maximal degree in co-relation 6297. Up to 1297 conditions per place. [2024-05-12 12:38:55,479 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 115 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2024-05-12 12:38:55,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 138 transitions, 1406 flow [2024-05-12 12:38:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:38:55,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:38:55,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-05-12 12:38:55,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-05-12 12:38:55,481 INFO L175 Difference]: Start difference. First operand has 98 places, 109 transitions, 993 flow. Second operand 8 states and 131 transitions. [2024-05-12 12:38:55,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 138 transitions, 1406 flow [2024-05-12 12:38:55,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1346 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 12:38:55,493 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 1009 flow [2024-05-12 12:38:55,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1009, PETRI_PLACES=103, PETRI_TRANSITIONS=112} [2024-05-12 12:38:55,494 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2024-05-12 12:38:55,494 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 1009 flow [2024-05-12 12:38:55,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:55,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:55,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:55,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 12:38:55,495 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:55,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:55,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2044790850, now seen corresponding path program 1 times [2024-05-12 12:38:55,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:55,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407039590] [2024-05-12 12:38:55,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:55,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:57,155 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 12:38:57,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:57,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407039590] [2024-05-12 12:38:57,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407039590] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:57,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:57,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:38:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187122291] [2024-05-12 12:38:57,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:38:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:57,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:38:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:38:57,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:57,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 112 transitions, 1009 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:57,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:57,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:57,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:38:57,932 INFO L124 PetriNetUnfolderBase]: 870/1609 cut-off events. [2024-05-12 12:38:57,932 INFO L125 PetriNetUnfolderBase]: For 10701/10701 co-relation queries the response was YES. [2024-05-12 12:38:57,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6781 conditions, 1609 events. 870/1609 cut-off events. For 10701/10701 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8683 event pairs, 217 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 6730. Up to 1276 conditions per place. [2024-05-12 12:38:57,943 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 120 selfloop transitions, 27 changer transitions 0/153 dead transitions. [2024-05-12 12:38:57,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 153 transitions, 1492 flow [2024-05-12 12:38:57,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:38:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:38:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-05-12 12:38:57,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-05-12 12:38:57,945 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 1009 flow. Second operand 7 states and 132 transitions. [2024-05-12 12:38:57,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 153 transitions, 1492 flow [2024-05-12 12:38:57,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 153 transitions, 1444 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-05-12 12:38:57,963 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 1102 flow [2024-05-12 12:38:57,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1102, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2024-05-12 12:38:57,963 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2024-05-12 12:38:57,964 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 1102 flow [2024-05-12 12:38:57,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:57,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:38:57,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:38:57,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 12:38:57,964 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:38:57,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:38:57,965 INFO L85 PathProgramCache]: Analyzing trace with hash -932007648, now seen corresponding path program 2 times [2024-05-12 12:38:57,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:38:57,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210226295] [2024-05-12 12:38:57,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:38:57,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:38:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:38:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:38:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:38:59,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210226295] [2024-05-12 12:38:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210226295] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:38:59,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:38:59,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:38:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858624074] [2024-05-12 12:38:59,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:38:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:38:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:38:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:38:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:38:59,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:38:59,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 1102 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:38:59,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:38:59,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:38:59,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:00,516 INFO L124 PetriNetUnfolderBase]: 920/1689 cut-off events. [2024-05-12 12:39:00,516 INFO L125 PetriNetUnfolderBase]: For 12623/12623 co-relation queries the response was YES. [2024-05-12 12:39:00,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7434 conditions, 1689 events. 920/1689 cut-off events. For 12623/12623 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9175 event pairs, 215 based on Foata normal form. 2/1625 useless extension candidates. Maximal degree in co-relation 7379. Up to 1277 conditions per place. [2024-05-12 12:39:00,528 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 116 selfloop transitions, 42 changer transitions 0/164 dead transitions. [2024-05-12 12:39:00,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 164 transitions, 1687 flow [2024-05-12 12:39:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:39:00,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:39:00,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-05-12 12:39:00,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-05-12 12:39:00,530 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 1102 flow. Second operand 7 states and 133 transitions. [2024-05-12 12:39:00,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 164 transitions, 1687 flow [2024-05-12 12:39:00,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 164 transitions, 1643 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-05-12 12:39:00,547 INFO L231 Difference]: Finished difference. Result has 114 places, 129 transitions, 1302 flow [2024-05-12 12:39:00,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=114, PETRI_TRANSITIONS=129} [2024-05-12 12:39:00,548 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 70 predicate places. [2024-05-12 12:39:00,548 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 129 transitions, 1302 flow [2024-05-12 12:39:00,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:00,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:00,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 12:39:00,549 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:00,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash 285978016, now seen corresponding path program 1 times [2024-05-12 12:39:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431138103] [2024-05-12 12:39:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:01,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:01,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431138103] [2024-05-12 12:39:01,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431138103] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:02,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:02,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159896979] [2024-05-12 12:39:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:02,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:02,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:02,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:02,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 129 transitions, 1302 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:02,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:02,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:02,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:02,685 INFO L124 PetriNetUnfolderBase]: 918/1692 cut-off events. [2024-05-12 12:39:02,685 INFO L125 PetriNetUnfolderBase]: For 14854/14854 co-relation queries the response was YES. [2024-05-12 12:39:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 1692 events. 918/1692 cut-off events. For 14854/14854 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9305 event pairs, 293 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 7752. Up to 1406 conditions per place. [2024-05-12 12:39:02,695 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 123 selfloop transitions, 22 changer transitions 0/151 dead transitions. [2024-05-12 12:39:02,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 151 transitions, 1671 flow [2024-05-12 12:39:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:39:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:39:02,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 12:39:02,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-05-12 12:39:02,697 INFO L175 Difference]: Start difference. First operand has 114 places, 129 transitions, 1302 flow. Second operand 7 states and 118 transitions. [2024-05-12 12:39:02,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 151 transitions, 1671 flow [2024-05-12 12:39:02,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 151 transitions, 1633 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-05-12 12:39:02,717 INFO L231 Difference]: Finished difference. Result has 120 places, 130 transitions, 1333 flow [2024-05-12 12:39:02,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1333, PETRI_PLACES=120, PETRI_TRANSITIONS=130} [2024-05-12 12:39:02,717 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 76 predicate places. [2024-05-12 12:39:02,717 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 130 transitions, 1333 flow [2024-05-12 12:39:02,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:02,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:02,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:02,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 12:39:02,718 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:02,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2045007168, now seen corresponding path program 1 times [2024-05-12 12:39:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946232697] [2024-05-12 12:39:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:04,316 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 12:39:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946232697] [2024-05-12 12:39:04,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946232697] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:04,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694713165] [2024-05-12 12:39:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:04,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:04,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:04,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:04,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:04,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 130 transitions, 1333 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:04,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:04,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:04,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:04,981 INFO L124 PetriNetUnfolderBase]: 938/1724 cut-off events. [2024-05-12 12:39:04,981 INFO L125 PetriNetUnfolderBase]: For 16172/16172 co-relation queries the response was YES. [2024-05-12 12:39:04,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8039 conditions, 1724 events. 938/1724 cut-off events. For 16172/16172 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9490 event pairs, 296 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 7977. Up to 1428 conditions per place. [2024-05-12 12:39:04,991 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 133 selfloop transitions, 20 changer transitions 0/159 dead transitions. [2024-05-12 12:39:04,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 159 transitions, 1773 flow [2024-05-12 12:39:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-05-12 12:39:04,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-05-12 12:39:04,993 INFO L175 Difference]: Start difference. First operand has 120 places, 130 transitions, 1333 flow. Second operand 8 states and 134 transitions. [2024-05-12 12:39:04,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 159 transitions, 1773 flow [2024-05-12 12:39:05,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 159 transitions, 1729 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-05-12 12:39:05,012 INFO L231 Difference]: Finished difference. Result has 124 places, 133 transitions, 1381 flow [2024-05-12 12:39:05,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1381, PETRI_PLACES=124, PETRI_TRANSITIONS=133} [2024-05-12 12:39:05,012 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 80 predicate places. [2024-05-12 12:39:05,013 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 133 transitions, 1381 flow [2024-05-12 12:39:05,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:05,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:05,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:05,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 12:39:05,013 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:05,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1853945916, now seen corresponding path program 2 times [2024-05-12 12:39:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:05,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230536966] [2024-05-12 12:39:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:06,738 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 12:39:06,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:06,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230536966] [2024-05-12 12:39:06,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230536966] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:06,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:06,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:06,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162750450] [2024-05-12 12:39:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:06,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:06,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:06,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:06,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:06,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 133 transitions, 1381 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:06,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:06,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:06,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:07,394 INFO L124 PetriNetUnfolderBase]: 962/1755 cut-off events. [2024-05-12 12:39:07,395 INFO L125 PetriNetUnfolderBase]: For 18663/18672 co-relation queries the response was YES. [2024-05-12 12:39:07,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8452 conditions, 1755 events. 962/1755 cut-off events. For 18663/18672 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9673 event pairs, 278 based on Foata normal form. 4/1692 useless extension candidates. Maximal degree in co-relation 8389. Up to 1313 conditions per place. [2024-05-12 12:39:07,404 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 116 selfloop transitions, 45 changer transitions 0/167 dead transitions. [2024-05-12 12:39:07,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 167 transitions, 1951 flow [2024-05-12 12:39:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:07,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:07,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:39:07,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-05-12 12:39:07,413 INFO L175 Difference]: Start difference. First operand has 124 places, 133 transitions, 1381 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:39:07,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 167 transitions, 1951 flow [2024-05-12 12:39:07,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 167 transitions, 1889 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 12:39:07,434 INFO L231 Difference]: Finished difference. Result has 128 places, 141 transitions, 1540 flow [2024-05-12 12:39:07,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1540, PETRI_PLACES=128, PETRI_TRANSITIONS=141} [2024-05-12 12:39:07,435 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 84 predicate places. [2024-05-12 12:39:07,435 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 141 transitions, 1540 flow [2024-05-12 12:39:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:07,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:07,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:07,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 12:39:07,436 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:07,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1864430364, now seen corresponding path program 3 times [2024-05-12 12:39:07,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:07,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130469891] [2024-05-12 12:39:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:09,291 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 12:39:09,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130469891] [2024-05-12 12:39:09,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130469891] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:09,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:09,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:09,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309894567] [2024-05-12 12:39:09,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:09,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:09,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:09,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:09,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:09,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:09,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 141 transitions, 1540 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:09,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:09,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:09,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:10,098 INFO L124 PetriNetUnfolderBase]: 974/1782 cut-off events. [2024-05-12 12:39:10,098 INFO L125 PetriNetUnfolderBase]: For 20569/20578 co-relation queries the response was YES. [2024-05-12 12:39:10,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8859 conditions, 1782 events. 974/1782 cut-off events. For 20569/20578 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9818 event pairs, 242 based on Foata normal form. 4/1716 useless extension candidates. Maximal degree in co-relation 8793. Up to 1249 conditions per place. [2024-05-12 12:39:10,108 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 124 selfloop transitions, 49 changer transitions 0/179 dead transitions. [2024-05-12 12:39:10,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 179 transitions, 2156 flow [2024-05-12 12:39:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:39:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:39:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 12:39:10,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-05-12 12:39:10,110 INFO L175 Difference]: Start difference. First operand has 128 places, 141 transitions, 1540 flow. Second operand 7 states and 129 transitions. [2024-05-12 12:39:10,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 179 transitions, 2156 flow [2024-05-12 12:39:10,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 179 transitions, 2060 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-05-12 12:39:10,134 INFO L231 Difference]: Finished difference. Result has 133 places, 148 transitions, 1692 flow [2024-05-12 12:39:10,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1692, PETRI_PLACES=133, PETRI_TRANSITIONS=148} [2024-05-12 12:39:10,135 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 89 predicate places. [2024-05-12 12:39:10,135 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 148 transitions, 1692 flow [2024-05-12 12:39:10,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:10,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:10,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:10,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 12:39:10,136 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:10,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1864421436, now seen corresponding path program 3 times [2024-05-12 12:39:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437389864] [2024-05-12 12:39:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437389864] [2024-05-12 12:39:11,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437389864] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:11,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999692110] [2024-05-12 12:39:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:11,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:11,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 148 transitions, 1692 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:11,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:11,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:11,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:12,515 INFO L124 PetriNetUnfolderBase]: 994/1820 cut-off events. [2024-05-12 12:39:12,515 INFO L125 PetriNetUnfolderBase]: For 22759/22768 co-relation queries the response was YES. [2024-05-12 12:39:12,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9425 conditions, 1820 events. 994/1820 cut-off events. For 22759/22768 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10198 event pairs, 300 based on Foata normal form. 4/1752 useless extension candidates. Maximal degree in co-relation 9355. Up to 1486 conditions per place. [2024-05-12 12:39:12,527 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 142 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2024-05-12 12:39:12,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 175 transitions, 2161 flow [2024-05-12 12:39:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-05-12 12:39:12,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-05-12 12:39:12,529 INFO L175 Difference]: Start difference. First operand has 133 places, 148 transitions, 1692 flow. Second operand 8 states and 134 transitions. [2024-05-12 12:39:12,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 175 transitions, 2161 flow [2024-05-12 12:39:12,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 175 transitions, 2095 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-05-12 12:39:12,562 INFO L231 Difference]: Finished difference. Result has 139 places, 151 transitions, 1733 flow [2024-05-12 12:39:12,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1733, PETRI_PLACES=139, PETRI_TRANSITIONS=151} [2024-05-12 12:39:12,562 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 95 predicate places. [2024-05-12 12:39:12,562 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 151 transitions, 1733 flow [2024-05-12 12:39:12,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:12,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:12,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:12,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 12:39:12,563 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:12,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1854302106, now seen corresponding path program 4 times [2024-05-12 12:39:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:12,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463761572] [2024-05-12 12:39:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:12,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463761572] [2024-05-12 12:39:14,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463761572] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:14,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:14,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862327990] [2024-05-12 12:39:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:14,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:14,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:14,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 151 transitions, 1733 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:14,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:14,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:14,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:14,936 INFO L124 PetriNetUnfolderBase]: 1002/1832 cut-off events. [2024-05-12 12:39:14,936 INFO L125 PetriNetUnfolderBase]: For 22702/22711 co-relation queries the response was YES. [2024-05-12 12:39:14,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9534 conditions, 1832 events. 1002/1832 cut-off events. For 22702/22711 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10269 event pairs, 279 based on Foata normal form. 4/1764 useless extension candidates. Maximal degree in co-relation 9462. Up to 1443 conditions per place. [2024-05-12 12:39:14,949 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 135 selfloop transitions, 38 changer transitions 0/179 dead transitions. [2024-05-12 12:39:14,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 179 transitions, 2234 flow [2024-05-12 12:39:14,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:14,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 12:39:14,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-05-12 12:39:14,951 INFO L175 Difference]: Start difference. First operand has 139 places, 151 transitions, 1733 flow. Second operand 8 states and 136 transitions. [2024-05-12 12:39:14,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 179 transitions, 2234 flow [2024-05-12 12:39:14,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 179 transitions, 2158 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 12:39:14,981 INFO L231 Difference]: Finished difference. Result has 141 places, 154 transitions, 1792 flow [2024-05-12 12:39:14,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1792, PETRI_PLACES=141, PETRI_TRANSITIONS=154} [2024-05-12 12:39:14,982 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2024-05-12 12:39:14,982 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 154 transitions, 1792 flow [2024-05-12 12:39:14,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:14,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:14,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:14,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 12:39:14,983 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:14,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1853933020, now seen corresponding path program 1 times [2024-05-12 12:39:14,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152099477] [2024-05-12 12:39:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:18,020 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 12:39:18,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:18,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152099477] [2024-05-12 12:39:18,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152099477] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:18,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:18,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:18,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161667031] [2024-05-12 12:39:18,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:18,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:18,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:18,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:18,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:18,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 154 transitions, 1792 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:18,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:18,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:18,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:18,740 INFO L124 PetriNetUnfolderBase]: 1005/1834 cut-off events. [2024-05-12 12:39:18,740 INFO L125 PetriNetUnfolderBase]: For 22353/22353 co-relation queries the response was YES. [2024-05-12 12:39:18,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9616 conditions, 1834 events. 1005/1834 cut-off events. For 22353/22353 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10241 event pairs, 305 based on Foata normal form. 1/1764 useless extension candidates. Maximal degree in co-relation 9543. Up to 1561 conditions per place. [2024-05-12 12:39:18,750 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 159 selfloop transitions, 22 changer transitions 0/187 dead transitions. [2024-05-12 12:39:18,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 187 transitions, 2337 flow [2024-05-12 12:39:18,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:39:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:39:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-05-12 12:39:18,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-05-12 12:39:18,753 INFO L175 Difference]: Start difference. First operand has 141 places, 154 transitions, 1792 flow. Second operand 9 states and 147 transitions. [2024-05-12 12:39:18,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 187 transitions, 2337 flow [2024-05-12 12:39:18,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 187 transitions, 2233 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 12:39:18,783 INFO L231 Difference]: Finished difference. Result has 144 places, 157 transitions, 1782 flow [2024-05-12 12:39:18,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1782, PETRI_PLACES=144, PETRI_TRANSITIONS=157} [2024-05-12 12:39:18,783 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 100 predicate places. [2024-05-12 12:39:18,783 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 157 transitions, 1782 flow [2024-05-12 12:39:18,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:18,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:18,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:18,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 12:39:18,784 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:18,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:18,784 INFO L85 PathProgramCache]: Analyzing trace with hash 271630215, now seen corresponding path program 1 times [2024-05-12 12:39:18,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:18,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292177077] [2024-05-12 12:39:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:18,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:20,588 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 12:39:20,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:20,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292177077] [2024-05-12 12:39:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292177077] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:20,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:20,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759186984] [2024-05-12 12:39:20,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:20,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:20,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:20,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:20,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 157 transitions, 1782 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:20,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:20,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:20,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:21,307 INFO L124 PetriNetUnfolderBase]: 1031/1874 cut-off events. [2024-05-12 12:39:21,307 INFO L125 PetriNetUnfolderBase]: For 23769/23769 co-relation queries the response was YES. [2024-05-12 12:39:21,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9865 conditions, 1874 events. 1031/1874 cut-off events. For 23769/23769 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10483 event pairs, 252 based on Foata normal form. 2/1805 useless extension candidates. Maximal degree in co-relation 9791. Up to 1558 conditions per place. [2024-05-12 12:39:21,383 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 170 selfloop transitions, 18 changer transitions 0/194 dead transitions. [2024-05-12 12:39:21,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 194 transitions, 2352 flow [2024-05-12 12:39:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-05-12 12:39:21,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-05-12 12:39:21,386 INFO L175 Difference]: Start difference. First operand has 144 places, 157 transitions, 1782 flow. Second operand 8 states and 137 transitions. [2024-05-12 12:39:21,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 194 transitions, 2352 flow [2024-05-12 12:39:21,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 194 transitions, 2280 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 12:39:21,418 INFO L231 Difference]: Finished difference. Result has 147 places, 164 transitions, 1863 flow [2024-05-12 12:39:21,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1863, PETRI_PLACES=147, PETRI_TRANSITIONS=164} [2024-05-12 12:39:21,419 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 103 predicate places. [2024-05-12 12:39:21,419 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 164 transitions, 1863 flow [2024-05-12 12:39:21,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:21,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:21,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:21,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 12:39:21,419 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:21,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1437931621, now seen corresponding path program 2 times [2024-05-12 12:39:21,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:21,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591876425] [2024-05-12 12:39:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:23,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:23,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591876425] [2024-05-12 12:39:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591876425] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770420350] [2024-05-12 12:39:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:23,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:23,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:23,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:23,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 164 transitions, 1863 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:23,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:23,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:23,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:24,007 INFO L124 PetriNetUnfolderBase]: 1057/1920 cut-off events. [2024-05-12 12:39:24,007 INFO L125 PetriNetUnfolderBase]: For 26128/26128 co-relation queries the response was YES. [2024-05-12 12:39:24,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10316 conditions, 1920 events. 1057/1920 cut-off events. For 26128/26128 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10758 event pairs, 240 based on Foata normal form. 2/1849 useless extension candidates. Maximal degree in co-relation 10239. Up to 1559 conditions per place. [2024-05-12 12:39:24,021 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 166 selfloop transitions, 26 changer transitions 0/198 dead transitions. [2024-05-12 12:39:24,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 198 transitions, 2415 flow [2024-05-12 12:39:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:39:24,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-05-12 12:39:24,022 INFO L175 Difference]: Start difference. First operand has 147 places, 164 transitions, 1863 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:39:24,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 198 transitions, 2415 flow [2024-05-12 12:39:24,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 198 transitions, 2360 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 12:39:24,059 INFO L231 Difference]: Finished difference. Result has 152 places, 169 transitions, 1944 flow [2024-05-12 12:39:24,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1944, PETRI_PLACES=152, PETRI_TRANSITIONS=169} [2024-05-12 12:39:24,060 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-05-12 12:39:24,060 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 169 transitions, 1944 flow [2024-05-12 12:39:24,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:24,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:24,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:24,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 12:39:24,060 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:24,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1172543602, now seen corresponding path program 1 times [2024-05-12 12:39:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:24,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157446851] [2024-05-12 12:39:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:26,022 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 12:39:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:26,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157446851] [2024-05-12 12:39:26,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157446851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:26,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:26,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7407511] [2024-05-12 12:39:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:26,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:26,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 169 transitions, 1944 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:26,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:26,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:26,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:26,773 INFO L124 PetriNetUnfolderBase]: 1055/1917 cut-off events. [2024-05-12 12:39:26,774 INFO L125 PetriNetUnfolderBase]: For 27632/27632 co-relation queries the response was YES. [2024-05-12 12:39:26,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 1917 events. 1055/1917 cut-off events. For 27632/27632 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10762 event pairs, 307 based on Foata normal form. 1/1845 useless extension candidates. Maximal degree in co-relation 10406. Up to 1584 conditions per place. [2024-05-12 12:39:26,786 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 162 selfloop transitions, 28 changer transitions 0/196 dead transitions. [2024-05-12 12:39:26,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 196 transitions, 2447 flow [2024-05-12 12:39:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-05-12 12:39:26,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-05-12 12:39:26,787 INFO L175 Difference]: Start difference. First operand has 152 places, 169 transitions, 1944 flow. Second operand 8 states and 134 transitions. [2024-05-12 12:39:26,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 196 transitions, 2447 flow [2024-05-12 12:39:26,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 196 transitions, 2339 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-05-12 12:39:26,824 INFO L231 Difference]: Finished difference. Result has 155 places, 170 transitions, 1925 flow [2024-05-12 12:39:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1925, PETRI_PLACES=155, PETRI_TRANSITIONS=170} [2024-05-12 12:39:26,825 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 111 predicate places. [2024-05-12 12:39:26,825 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 170 transitions, 1925 flow [2024-05-12 12:39:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:26,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:26,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 12:39:26,826 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:26,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1311071473, now seen corresponding path program 3 times [2024-05-12 12:39:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:26,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349220754] [2024-05-12 12:39:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:26,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:28,840 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 12:39:28,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349220754] [2024-05-12 12:39:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349220754] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:28,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154534896] [2024-05-12 12:39:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:28,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:28,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:28,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 170 transitions, 1925 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:28,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:28,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:28,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:29,723 INFO L124 PetriNetUnfolderBase]: 1087/1979 cut-off events. [2024-05-12 12:39:29,723 INFO L125 PetriNetUnfolderBase]: For 29126/29126 co-relation queries the response was YES. [2024-05-12 12:39:29,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10765 conditions, 1979 events. 1087/1979 cut-off events. For 29126/29126 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11207 event pairs, 232 based on Foata normal form. 2/1904 useless extension candidates. Maximal degree in co-relation 10685. Up to 1512 conditions per place. [2024-05-12 12:39:29,737 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 167 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2024-05-12 12:39:29,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 207 transitions, 2551 flow [2024-05-12 12:39:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-05-12 12:39:29,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-05-12 12:39:29,738 INFO L175 Difference]: Start difference. First operand has 155 places, 170 transitions, 1925 flow. Second operand 8 states and 142 transitions. [2024-05-12 12:39:29,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 207 transitions, 2551 flow [2024-05-12 12:39:29,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 207 transitions, 2489 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 12:39:29,780 INFO L231 Difference]: Finished difference. Result has 158 places, 174 transitions, 2024 flow [2024-05-12 12:39:29,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2024, PETRI_PLACES=158, PETRI_TRANSITIONS=174} [2024-05-12 12:39:29,781 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 114 predicate places. [2024-05-12 12:39:29,781 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 174 transitions, 2024 flow [2024-05-12 12:39:29,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:29,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:29,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:29,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 12:39:29,782 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:29,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1317596973, now seen corresponding path program 1 times [2024-05-12 12:39:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470396623] [2024-05-12 12:39:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470396623] [2024-05-12 12:39:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470396623] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:31,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:31,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059939332] [2024-05-12 12:39:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:32,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:32,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 174 transitions, 2024 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:32,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:32,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:32,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:32,813 INFO L124 PetriNetUnfolderBase]: 1122/2045 cut-off events. [2024-05-12 12:39:32,814 INFO L125 PetriNetUnfolderBase]: For 32603/32603 co-relation queries the response was YES. [2024-05-12 12:39:32,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11430 conditions, 2045 events. 1122/2045 cut-off events. For 32603/32603 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11700 event pairs, 317 based on Foata normal form. 2/1966 useless extension candidates. Maximal degree in co-relation 11348. Up to 1666 conditions per place. [2024-05-12 12:39:32,826 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 184 selfloop transitions, 25 changer transitions 0/215 dead transitions. [2024-05-12 12:39:32,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 215 transitions, 2715 flow [2024-05-12 12:39:32,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:39:32,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:39:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 12:39:32,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-05-12 12:39:32,828 INFO L175 Difference]: Start difference. First operand has 158 places, 174 transitions, 2024 flow. Second operand 9 states and 153 transitions. [2024-05-12 12:39:32,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 215 transitions, 2715 flow [2024-05-12 12:39:32,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 215 transitions, 2650 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-05-12 12:39:32,875 INFO L231 Difference]: Finished difference. Result has 165 places, 181 transitions, 2172 flow [2024-05-12 12:39:32,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1969, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2172, PETRI_PLACES=165, PETRI_TRANSITIONS=181} [2024-05-12 12:39:32,875 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 121 predicate places. [2024-05-12 12:39:32,875 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 181 transitions, 2172 flow [2024-05-12 12:39:32,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:32,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:32,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:32,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 12:39:32,876 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:32,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:32,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1667973443, now seen corresponding path program 4 times [2024-05-12 12:39:32,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:32,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652012001] [2024-05-12 12:39:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:32,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:34,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652012001] [2024-05-12 12:39:34,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652012001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:34,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:34,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576075770] [2024-05-12 12:39:34,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:34,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:34,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:34,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 181 transitions, 2172 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:34,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:34,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:34,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:35,588 INFO L124 PetriNetUnfolderBase]: 1184/2161 cut-off events. [2024-05-12 12:39:35,588 INFO L125 PetriNetUnfolderBase]: For 37510/37519 co-relation queries the response was YES. [2024-05-12 12:39:35,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 2161 events. 1184/2161 cut-off events. For 37510/37519 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12556 event pairs, 253 based on Foata normal form. 4/2077 useless extension candidates. Maximal degree in co-relation 12358. Up to 1666 conditions per place. [2024-05-12 12:39:35,601 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 180 selfloop transitions, 36 changer transitions 0/222 dead transitions. [2024-05-12 12:39:35,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 222 transitions, 2950 flow [2024-05-12 12:39:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 12:39:35,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-05-12 12:39:35,603 INFO L175 Difference]: Start difference. First operand has 165 places, 181 transitions, 2172 flow. Second operand 8 states and 145 transitions. [2024-05-12 12:39:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 222 transitions, 2950 flow [2024-05-12 12:39:35,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 222 transitions, 2848 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-05-12 12:39:35,658 INFO L231 Difference]: Finished difference. Result has 171 places, 189 transitions, 2301 flow [2024-05-12 12:39:35,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2301, PETRI_PLACES=171, PETRI_TRANSITIONS=189} [2024-05-12 12:39:35,658 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2024-05-12 12:39:35,658 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 189 transitions, 2301 flow [2024-05-12 12:39:35,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:35,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:35,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:35,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 12:39:35,659 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:35,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1962764537, now seen corresponding path program 5 times [2024-05-12 12:39:35,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:35,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98487262] [2024-05-12 12:39:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:35,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:37,434 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 12:39:37,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98487262] [2024-05-12 12:39:37,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98487262] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:37,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500669765] [2024-05-12 12:39:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:37,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:37,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 189 transitions, 2301 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:37,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:37,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:38,208 INFO L124 PetriNetUnfolderBase]: 1180/2155 cut-off events. [2024-05-12 12:39:38,208 INFO L125 PetriNetUnfolderBase]: For 39186/39195 co-relation queries the response was YES. [2024-05-12 12:39:38,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12679 conditions, 2155 events. 1180/2155 cut-off events. For 39186/39195 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12479 event pairs, 257 based on Foata normal form. 4/2071 useless extension candidates. Maximal degree in co-relation 12589. Up to 1716 conditions per place. [2024-05-12 12:39:38,222 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 179 selfloop transitions, 32 changer transitions 0/217 dead transitions. [2024-05-12 12:39:38,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 217 transitions, 2848 flow [2024-05-12 12:39:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-05-12 12:39:38,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-05-12 12:39:38,223 INFO L175 Difference]: Start difference. First operand has 171 places, 189 transitions, 2301 flow. Second operand 8 states and 138 transitions. [2024-05-12 12:39:38,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 217 transitions, 2848 flow [2024-05-12 12:39:38,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 217 transitions, 2737 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-05-12 12:39:38,280 INFO L231 Difference]: Finished difference. Result has 176 places, 190 transitions, 2280 flow [2024-05-12 12:39:38,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2280, PETRI_PLACES=176, PETRI_TRANSITIONS=190} [2024-05-12 12:39:38,281 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 132 predicate places. [2024-05-12 12:39:38,281 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 190 transitions, 2280 flow [2024-05-12 12:39:38,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:38,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:38,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:38,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 12:39:38,282 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:38,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:38,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1637735427, now seen corresponding path program 2 times [2024-05-12 12:39:38,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:38,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204436935] [2024-05-12 12:39:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:38,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:40,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204436935] [2024-05-12 12:39:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204436935] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:40,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:40,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333688116] [2024-05-12 12:39:40,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:40,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:40,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 190 transitions, 2280 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:40,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:40,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:40,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:41,214 INFO L124 PetriNetUnfolderBase]: 1206/2194 cut-off events. [2024-05-12 12:39:41,214 INFO L125 PetriNetUnfolderBase]: For 39419/39419 co-relation queries the response was YES. [2024-05-12 12:39:41,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12851 conditions, 2194 events. 1206/2194 cut-off events. For 39419/39419 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12721 event pairs, 340 based on Foata normal form. 2/2109 useless extension candidates. Maximal degree in co-relation 12759. Up to 1861 conditions per place. [2024-05-12 12:39:41,229 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 195 selfloop transitions, 22 changer transitions 0/223 dead transitions. [2024-05-12 12:39:41,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 223 transitions, 2928 flow [2024-05-12 12:39:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:39:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:39:41,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-05-12 12:39:41,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-05-12 12:39:41,231 INFO L175 Difference]: Start difference. First operand has 176 places, 190 transitions, 2280 flow. Second operand 9 states and 148 transitions. [2024-05-12 12:39:41,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 223 transitions, 2928 flow [2024-05-12 12:39:41,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 223 transitions, 2859 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 12:39:41,292 INFO L231 Difference]: Finished difference. Result has 179 places, 193 transitions, 2329 flow [2024-05-12 12:39:41,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2329, PETRI_PLACES=179, PETRI_TRANSITIONS=193} [2024-05-12 12:39:41,292 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 135 predicate places. [2024-05-12 12:39:41,292 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 193 transitions, 2329 flow [2024-05-12 12:39:41,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:41,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:41,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:41,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 12:39:41,293 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:41,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1637746587, now seen corresponding path program 3 times [2024-05-12 12:39:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:41,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052485470] [2024-05-12 12:39:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:41,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:43,501 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 12:39:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:43,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052485470] [2024-05-12 12:39:43,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052485470] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:43,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:43,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:43,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514501103] [2024-05-12 12:39:43,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:43,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:43,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:43,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:43,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:43,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:43,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 193 transitions, 2329 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:43,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:43,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:43,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:44,376 INFO L124 PetriNetUnfolderBase]: 1250/2294 cut-off events. [2024-05-12 12:39:44,376 INFO L125 PetriNetUnfolderBase]: For 43785/43794 co-relation queries the response was YES. [2024-05-12 12:39:44,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13548 conditions, 2294 events. 1250/2294 cut-off events. For 43785/43794 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13620 event pairs, 301 based on Foata normal form. 4/2201 useless extension candidates. Maximal degree in co-relation 13455. Up to 1652 conditions per place. [2024-05-12 12:39:44,393 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 169 selfloop transitions, 61 changer transitions 0/236 dead transitions. [2024-05-12 12:39:44,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 236 transitions, 3159 flow [2024-05-12 12:39:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:39:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:39:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-05-12 12:39:44,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-05-12 12:39:44,395 INFO L175 Difference]: Start difference. First operand has 179 places, 193 transitions, 2329 flow. Second operand 9 states and 157 transitions. [2024-05-12 12:39:44,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 236 transitions, 3159 flow [2024-05-12 12:39:44,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 236 transitions, 3063 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-05-12 12:39:44,469 INFO L231 Difference]: Finished difference. Result has 182 places, 202 transitions, 2596 flow [2024-05-12 12:39:44,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2233, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2596, PETRI_PLACES=182, PETRI_TRANSITIONS=202} [2024-05-12 12:39:44,469 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 138 predicate places. [2024-05-12 12:39:44,469 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 202 transitions, 2596 flow [2024-05-12 12:39:44,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:44,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:44,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:44,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 12:39:44,469 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:44,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1962487707, now seen corresponding path program 4 times [2024-05-12 12:39:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:44,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668660245] [2024-05-12 12:39:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:44,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668660245] [2024-05-12 12:39:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668660245] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:46,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:46,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33625900] [2024-05-12 12:39:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:46,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:46,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:46,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:46,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:46,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:46,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 202 transitions, 2596 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:46,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:46,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:46,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:47,269 INFO L124 PetriNetUnfolderBase]: 1282/2338 cut-off events. [2024-05-12 12:39:47,269 INFO L125 PetriNetUnfolderBase]: For 48028/48037 co-relation queries the response was YES. [2024-05-12 12:39:47,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14346 conditions, 2338 events. 1282/2338 cut-off events. For 48028/48037 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13833 event pairs, 346 based on Foata normal form. 4/2247 useless extension candidates. Maximal degree in co-relation 14251. Up to 1888 conditions per place. [2024-05-12 12:39:47,287 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 201 selfloop transitions, 32 changer transitions 0/239 dead transitions. [2024-05-12 12:39:47,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 239 transitions, 3324 flow [2024-05-12 12:39:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:39:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:39:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 12:39:47,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-05-12 12:39:47,288 INFO L175 Difference]: Start difference. First operand has 182 places, 202 transitions, 2596 flow. Second operand 9 states and 153 transitions. [2024-05-12 12:39:47,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 239 transitions, 3324 flow [2024-05-12 12:39:47,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 239 transitions, 3116 flow, removed 92 selfloop flow, removed 3 redundant places. [2024-05-12 12:39:47,373 INFO L231 Difference]: Finished difference. Result has 189 places, 207 transitions, 2595 flow [2024-05-12 12:39:47,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2595, PETRI_PLACES=189, PETRI_TRANSITIONS=207} [2024-05-12 12:39:47,373 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 145 predicate places. [2024-05-12 12:39:47,373 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 207 transitions, 2595 flow [2024-05-12 12:39:47,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:47,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:47,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:47,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 12:39:47,374 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:47,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1648798397, now seen corresponding path program 6 times [2024-05-12 12:39:47,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:47,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223613598] [2024-05-12 12:39:47,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:47,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:49,376 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 12:39:49,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:49,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223613598] [2024-05-12 12:39:49,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223613598] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:49,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:49,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 12:39:49,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211341694] [2024-05-12 12:39:49,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:49,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 12:39:49,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 12:39:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 12:39:49,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:49,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 207 transitions, 2595 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:49,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:49,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:49,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:50,220 INFO L124 PetriNetUnfolderBase]: 1288/2355 cut-off events. [2024-05-12 12:39:50,221 INFO L125 PetriNetUnfolderBase]: For 47527/47536 co-relation queries the response was YES. [2024-05-12 12:39:50,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14408 conditions, 2355 events. 1288/2355 cut-off events. For 47527/47536 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14021 event pairs, 233 based on Foata normal form. 4/2261 useless extension candidates. Maximal degree in co-relation 14310. Up to 1647 conditions per place. [2024-05-12 12:39:50,241 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 182 selfloop transitions, 54 changer transitions 0/242 dead transitions. [2024-05-12 12:39:50,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 242 transitions, 3305 flow [2024-05-12 12:39:50,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:39:50,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:39:50,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-05-12 12:39:50,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-05-12 12:39:50,243 INFO L175 Difference]: Start difference. First operand has 189 places, 207 transitions, 2595 flow. Second operand 8 states and 145 transitions. [2024-05-12 12:39:50,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 242 transitions, 3305 flow [2024-05-12 12:39:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 242 transitions, 3167 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-05-12 12:39:50,321 INFO L231 Difference]: Finished difference. Result has 191 places, 209 transitions, 2613 flow [2024-05-12 12:39:50,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2613, PETRI_PLACES=191, PETRI_TRANSITIONS=209} [2024-05-12 12:39:50,322 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 147 predicate places. [2024-05-12 12:39:50,322 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 209 transitions, 2613 flow [2024-05-12 12:39:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 12:39:50,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:50,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:50,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 12:39:50,323 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:50,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1648788477, now seen corresponding path program 5 times [2024-05-12 12:39:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:50,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974615576] [2024-05-12 12:39:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:52,740 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 12:39:52,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974615576] [2024-05-12 12:39:52,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974615576] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:52,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:52,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:39:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144718512] [2024-05-12 12:39:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:52,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:39:52,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:39:52,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:39:52,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:52,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 209 transitions, 2613 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:52,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:52,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:52,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:53,633 INFO L124 PetriNetUnfolderBase]: 1307/2348 cut-off events. [2024-05-12 12:39:53,633 INFO L125 PetriNetUnfolderBase]: For 49503/49512 co-relation queries the response was YES. [2024-05-12 12:39:53,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14725 conditions, 2348 events. 1307/2348 cut-off events. For 49503/49512 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13865 event pairs, 314 based on Foata normal form. 4/2267 useless extension candidates. Maximal degree in co-relation 14626. Up to 1855 conditions per place. [2024-05-12 12:39:53,655 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 195 selfloop transitions, 47 changer transitions 0/248 dead transitions. [2024-05-12 12:39:53,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 248 transitions, 3371 flow [2024-05-12 12:39:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:39:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:39:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 12:39:53,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-05-12 12:39:53,656 INFO L175 Difference]: Start difference. First operand has 191 places, 209 transitions, 2613 flow. Second operand 9 states and 156 transitions. [2024-05-12 12:39:53,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 248 transitions, 3371 flow [2024-05-12 12:39:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 248 transitions, 3225 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 12:39:53,733 INFO L231 Difference]: Finished difference. Result has 196 places, 214 transitions, 2690 flow [2024-05-12 12:39:53,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2690, PETRI_PLACES=196, PETRI_TRANSITIONS=214} [2024-05-12 12:39:53,733 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 152 predicate places. [2024-05-12 12:39:53,733 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 214 transitions, 2690 flow [2024-05-12 12:39:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 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 12:39:53,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:53,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:53,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 12:39:53,734 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:53,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:53,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1637346749, now seen corresponding path program 1 times [2024-05-12 12:39:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205350784] [2024-05-12 12:39:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:56,789 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 12:39:56,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:56,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205350784] [2024-05-12 12:39:56,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205350784] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:56,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:56,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:39:56,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366137078] [2024-05-12 12:39:56,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:39:56,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:56,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:39:56,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:39:56,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:39:56,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 214 transitions, 2690 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:56,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:56,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:39:56,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:57,880 INFO L124 PetriNetUnfolderBase]: 1311/2380 cut-off events. [2024-05-12 12:39:57,880 INFO L125 PetriNetUnfolderBase]: For 50233/50233 co-relation queries the response was YES. [2024-05-12 12:39:57,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14733 conditions, 2380 events. 1311/2380 cut-off events. For 50233/50233 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14155 event pairs, 378 based on Foata normal form. 2/2289 useless extension candidates. Maximal degree in co-relation 14632. Up to 2017 conditions per place. [2024-05-12 12:39:57,899 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 221 selfloop transitions, 24 changer transitions 0/251 dead transitions. [2024-05-12 12:39:57,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 251 transitions, 3412 flow [2024-05-12 12:39:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:39:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:39:57,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-05-12 12:39:57,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-05-12 12:39:57,901 INFO L175 Difference]: Start difference. First operand has 196 places, 214 transitions, 2690 flow. Second operand 10 states and 163 transitions. [2024-05-12 12:39:57,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 251 transitions, 3412 flow [2024-05-12 12:39:57,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 251 transitions, 3239 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-05-12 12:39:57,989 INFO L231 Difference]: Finished difference. Result has 200 places, 216 transitions, 2624 flow [2024-05-12 12:39:57,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2624, PETRI_PLACES=200, PETRI_TRANSITIONS=216} [2024-05-12 12:39:57,989 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-05-12 12:39:57,990 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 216 transitions, 2624 flow [2024-05-12 12:39:57,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:39:57,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:57,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:39:57,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 12:39:57,990 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:57,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash -412773942, now seen corresponding path program 1 times [2024-05-12 12:39:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:57,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373513352] [2024-05-12 12:39:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:57,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:39:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:39:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:39:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373513352] [2024-05-12 12:39:58,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373513352] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:39:58,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:39:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:39:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907181288] [2024-05-12 12:39:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:39:58,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:39:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:39:58,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:39:58,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:39:58,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-05-12 12:39:58,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 216 transitions, 2624 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:39:58,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:39:58,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-05-12 12:39:58,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:39:58,346 INFO L124 PetriNetUnfolderBase]: 612/1158 cut-off events. [2024-05-12 12:39:58,346 INFO L125 PetriNetUnfolderBase]: For 28997/29035 co-relation queries the response was YES. [2024-05-12 12:39:58,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 1158 events. 612/1158 cut-off events. For 28997/29035 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5878 event pairs, 226 based on Foata normal form. 118/1240 useless extension candidates. Maximal degree in co-relation 7075. Up to 494 conditions per place. [2024-05-12 12:39:58,355 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 101 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-05-12 12:39:58,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 131 transitions, 1826 flow [2024-05-12 12:39:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:39:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:39:58,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-05-12 12:39:58,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-05-12 12:39:58,357 INFO L175 Difference]: Start difference. First operand has 200 places, 216 transitions, 2624 flow. Second operand 4 states and 98 transitions. [2024-05-12 12:39:58,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 131 transitions, 1826 flow [2024-05-12 12:39:58,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 131 transitions, 1335 flow, removed 60 selfloop flow, removed 73 redundant places. [2024-05-12 12:39:58,411 INFO L231 Difference]: Finished difference. Result has 132 places, 110 transitions, 969 flow [2024-05-12 12:39:58,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=969, PETRI_PLACES=132, PETRI_TRANSITIONS=110} [2024-05-12 12:39:58,412 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 88 predicate places. [2024-05-12 12:39:58,412 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 110 transitions, 969 flow [2024-05-12 12:39:58,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:39:58,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:39:58,412 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 12:39:58,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 12:39:58,412 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:39:58,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:39:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1138700677, now seen corresponding path program 1 times [2024-05-12 12:39:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:39:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254854862] [2024-05-12 12:39:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:39:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:39:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:00,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:00,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254854862] [2024-05-12 12:40:00,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254854862] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:00,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:00,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660395165] [2024-05-12 12:40:00,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:00,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:00,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 110 transitions, 969 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:00,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:00,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:00,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:01,312 INFO L124 PetriNetUnfolderBase]: 742/1363 cut-off events. [2024-05-12 12:40:01,313 INFO L125 PetriNetUnfolderBase]: For 29544/29544 co-relation queries the response was YES. [2024-05-12 12:40:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 1363 events. 742/1363 cut-off events. For 29544/29544 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6664 event pairs, 198 based on Foata normal form. 2/1309 useless extension candidates. Maximal degree in co-relation 7276. Up to 1126 conditions per place. [2024-05-12 12:40:01,320 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 125 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2024-05-12 12:40:01,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 152 transitions, 1480 flow [2024-05-12 12:40:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-05-12 12:40:01,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-05-12 12:40:01,321 INFO L175 Difference]: Start difference. First operand has 132 places, 110 transitions, 969 flow. Second operand 9 states and 146 transitions. [2024-05-12 12:40:01,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 152 transitions, 1480 flow [2024-05-12 12:40:01,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 152 transitions, 1478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:40:01,360 INFO L231 Difference]: Finished difference. Result has 143 places, 122 transitions, 1146 flow [2024-05-12 12:40:01,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1146, PETRI_PLACES=143, PETRI_TRANSITIONS=122} [2024-05-12 12:40:01,361 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 99 predicate places. [2024-05-12 12:40:01,361 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 122 transitions, 1146 flow [2024-05-12 12:40:01,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:01,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:01,361 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 12:40:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 12:40:01,362 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:01,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1869797371, now seen corresponding path program 2 times [2024-05-12 12:40:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:01,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644058175] [2024-05-12 12:40:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:03,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:03,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644058175] [2024-05-12 12:40:03,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644058175] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:03,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:03,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:40:03,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043905269] [2024-05-12 12:40:03,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:03,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:40:03,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:40:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:40:03,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 122 transitions, 1146 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:03,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:03,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:03,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:04,526 INFO L124 PetriNetUnfolderBase]: 758/1392 cut-off events. [2024-05-12 12:40:04,526 INFO L125 PetriNetUnfolderBase]: For 31705/31705 co-relation queries the response was YES. [2024-05-12 12:40:04,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 1392 events. 758/1392 cut-off events. For 31705/31705 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6858 event pairs, 118 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 7811. Up to 1104 conditions per place. [2024-05-12 12:40:04,535 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 122 selfloop transitions, 23 changer transitions 0/152 dead transitions. [2024-05-12 12:40:04,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 152 transitions, 1599 flow [2024-05-12 12:40:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:40:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:40:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-05-12 12:40:04,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:40:04,537 INFO L175 Difference]: Start difference. First operand has 143 places, 122 transitions, 1146 flow. Second operand 8 states and 128 transitions. [2024-05-12 12:40:04,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 152 transitions, 1599 flow [2024-05-12 12:40:04,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 152 transitions, 1566 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 12:40:04,584 INFO L231 Difference]: Finished difference. Result has 149 places, 127 transitions, 1258 flow [2024-05-12 12:40:04,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1258, PETRI_PLACES=149, PETRI_TRANSITIONS=127} [2024-05-12 12:40:04,584 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 105 predicate places. [2024-05-12 12:40:04,584 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 127 transitions, 1258 flow [2024-05-12 12:40:04,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:04,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:04,584 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 12:40:04,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 12:40:04,585 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:04,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -172228281, now seen corresponding path program 3 times [2024-05-12 12:40:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616853194] [2024-05-12 12:40:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:06,973 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 12:40:06,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616853194] [2024-05-12 12:40:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616853194] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893114887] [2024-05-12 12:40:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:06,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:06,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:06,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:07,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:07,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 127 transitions, 1258 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:07,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:07,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:07,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:07,733 INFO L124 PetriNetUnfolderBase]: 778/1435 cut-off events. [2024-05-12 12:40:07,734 INFO L125 PetriNetUnfolderBase]: For 34447/34447 co-relation queries the response was YES. [2024-05-12 12:40:07,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1435 events. 778/1435 cut-off events. For 34447/34447 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7174 event pairs, 214 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 8211. Up to 1190 conditions per place. [2024-05-12 12:40:07,745 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 128 selfloop transitions, 19 changer transitions 0/154 dead transitions. [2024-05-12 12:40:07,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 1690 flow [2024-05-12 12:40:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:40:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:40:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-05-12 12:40:07,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:40:07,746 INFO L175 Difference]: Start difference. First operand has 149 places, 127 transitions, 1258 flow. Second operand 8 states and 128 transitions. [2024-05-12 12:40:07,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 1690 flow [2024-05-12 12:40:07,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 1602 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 12:40:07,808 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 1232 flow [2024-05-12 12:40:07,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1232, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-05-12 12:40:07,808 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 108 predicate places. [2024-05-12 12:40:07,809 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 1232 flow [2024-05-12 12:40:07,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:07,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:07,809 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 12:40:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 12:40:07,809 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:07,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:07,809 INFO L85 PathProgramCache]: Analyzing trace with hash -169395997, now seen corresponding path program 1 times [2024-05-12 12:40:07,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:07,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386683685] [2024-05-12 12:40:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:10,158 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 12:40:10,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386683685] [2024-05-12 12:40:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386683685] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:40:10,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810811181] [2024-05-12 12:40:10,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:10,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:40:10,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:40:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:40:10,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:10,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:10,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:10,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:10,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:10,820 INFO L124 PetriNetUnfolderBase]: 789/1452 cut-off events. [2024-05-12 12:40:10,820 INFO L125 PetriNetUnfolderBase]: For 35502/35502 co-relation queries the response was YES. [2024-05-12 12:40:10,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8286 conditions, 1452 events. 789/1452 cut-off events. For 35502/35502 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7268 event pairs, 213 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 8209. Up to 1205 conditions per place. [2024-05-12 12:40:10,829 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 126 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-05-12 12:40:10,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 1640 flow [2024-05-12 12:40:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:10,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-05-12 12:40:10,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-05-12 12:40:10,830 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 1232 flow. Second operand 9 states and 138 transitions. [2024-05-12 12:40:10,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 1640 flow [2024-05-12 12:40:10,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 155 transitions, 1592 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 12:40:10,886 INFO L231 Difference]: Finished difference. Result has 155 places, 130 transitions, 1271 flow [2024-05-12 12:40:10,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1271, PETRI_PLACES=155, PETRI_TRANSITIONS=130} [2024-05-12 12:40:10,887 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 111 predicate places. [2024-05-12 12:40:10,887 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 130 transitions, 1271 flow [2024-05-12 12:40:10,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:10,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:10,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:40:10,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 12:40:10,887 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:10,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2045352529, now seen corresponding path program 2 times [2024-05-12 12:40:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058249843] [2024-05-12 12:40:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:13,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058249843] [2024-05-12 12:40:13,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058249843] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:13,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:13,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690795452] [2024-05-12 12:40:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:13,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:13,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:13,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:13,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 130 transitions, 1271 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:13,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:13,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:13,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:14,155 INFO L124 PetriNetUnfolderBase]: 815/1491 cut-off events. [2024-05-12 12:40:14,155 INFO L125 PetriNetUnfolderBase]: For 38708/38708 co-relation queries the response was YES. [2024-05-12 12:40:14,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8646 conditions, 1491 events. 815/1491 cut-off events. For 38708/38708 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7454 event pairs, 205 based on Foata normal form. 2/1430 useless extension candidates. Maximal degree in co-relation 8568. Up to 1114 conditions per place. [2024-05-12 12:40:14,164 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 115 selfloop transitions, 38 changer transitions 0/160 dead transitions. [2024-05-12 12:40:14,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 160 transitions, 1809 flow [2024-05-12 12:40:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-05-12 12:40:14,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:40:14,165 INFO L175 Difference]: Start difference. First operand has 155 places, 130 transitions, 1271 flow. Second operand 9 states and 144 transitions. [2024-05-12 12:40:14,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 160 transitions, 1809 flow [2024-05-12 12:40:14,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 1742 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 12:40:14,219 INFO L231 Difference]: Finished difference. Result has 157 places, 134 transitions, 1366 flow [2024-05-12 12:40:14,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=157, PETRI_TRANSITIONS=134} [2024-05-12 12:40:14,219 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2024-05-12 12:40:14,219 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 134 transitions, 1366 flow [2024-05-12 12:40:14,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:14,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:14,219 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 12:40:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 12:40:14,220 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:14,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:14,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1988520609, now seen corresponding path program 1 times [2024-05-12 12:40:14,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:14,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50172335] [2024-05-12 12:40:14,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:16,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:16,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:16,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50172335] [2024-05-12 12:40:16,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50172335] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:16,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:16,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:16,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6341890] [2024-05-12 12:40:16,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:16,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:16,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:16,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:16,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:16,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:16,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 134 transitions, 1366 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:16,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:16,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:16,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:17,170 INFO L124 PetriNetUnfolderBase]: 813/1489 cut-off events. [2024-05-12 12:40:17,170 INFO L125 PetriNetUnfolderBase]: For 38867/38867 co-relation queries the response was YES. [2024-05-12 12:40:17,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8685 conditions, 1489 events. 813/1489 cut-off events. For 38867/38867 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7456 event pairs, 242 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 8606. Up to 1264 conditions per place. [2024-05-12 12:40:17,180 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 126 selfloop transitions, 26 changer transitions 0/159 dead transitions. [2024-05-12 12:40:17,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 159 transitions, 1798 flow [2024-05-12 12:40:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:17,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-05-12 12:40:17,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 12:40:17,182 INFO L175 Difference]: Start difference. First operand has 157 places, 134 transitions, 1366 flow. Second operand 9 states and 135 transitions. [2024-05-12 12:40:17,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 159 transitions, 1798 flow [2024-05-12 12:40:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 159 transitions, 1723 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 12:40:17,243 INFO L231 Difference]: Finished difference. Result has 161 places, 136 transitions, 1403 flow [2024-05-12 12:40:17,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1403, PETRI_PLACES=161, PETRI_TRANSITIONS=136} [2024-05-12 12:40:17,244 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 117 predicate places. [2024-05-12 12:40:17,244 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 136 transitions, 1403 flow [2024-05-12 12:40:17,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:17,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:17,244 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 12:40:17,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 12:40:17,244 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:17,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1988274345, now seen corresponding path program 4 times [2024-05-12 12:40:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:17,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694849543] [2024-05-12 12:40:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694849543] [2024-05-12 12:40:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694849543] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:19,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:19,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383535682] [2024-05-12 12:40:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:19,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:19,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 136 transitions, 1403 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:19,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:19,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:19,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:20,469 INFO L124 PetriNetUnfolderBase]: 833/1531 cut-off events. [2024-05-12 12:40:20,469 INFO L125 PetriNetUnfolderBase]: For 41411/41411 co-relation queries the response was YES. [2024-05-12 12:40:20,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8987 conditions, 1531 events. 833/1531 cut-off events. For 41411/41411 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7771 event pairs, 212 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 8906. Up to 1246 conditions per place. [2024-05-12 12:40:20,487 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 131 selfloop transitions, 23 changer transitions 0/161 dead transitions. [2024-05-12 12:40:20,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 161 transitions, 1837 flow [2024-05-12 12:40:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:40:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:40:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-05-12 12:40:20,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-05-12 12:40:20,489 INFO L175 Difference]: Start difference. First operand has 161 places, 136 transitions, 1403 flow. Second operand 8 states and 129 transitions. [2024-05-12 12:40:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 161 transitions, 1837 flow [2024-05-12 12:40:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 161 transitions, 1751 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 12:40:20,551 INFO L231 Difference]: Finished difference. Result has 162 places, 137 transitions, 1387 flow [2024-05-12 12:40:20,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1387, PETRI_PLACES=162, PETRI_TRANSITIONS=137} [2024-05-12 12:40:20,551 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 118 predicate places. [2024-05-12 12:40:20,551 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 137 transitions, 1387 flow [2024-05-12 12:40:20,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:20,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:20,552 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 12:40:20,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 12:40:20,552 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:20,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:20,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1988511929, now seen corresponding path program 3 times [2024-05-12 12:40:20,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:20,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968420651] [2024-05-12 12:40:20,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:20,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:22,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968420651] [2024-05-12 12:40:22,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968420651] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:22,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276603955] [2024-05-12 12:40:22,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:22,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:22,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:22,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 137 transitions, 1387 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:22,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:22,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:22,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:23,747 INFO L124 PetriNetUnfolderBase]: 844/1548 cut-off events. [2024-05-12 12:40:23,748 INFO L125 PetriNetUnfolderBase]: For 43461/43461 co-relation queries the response was YES. [2024-05-12 12:40:23,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9135 conditions, 1548 events. 844/1548 cut-off events. For 43461/43461 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7877 event pairs, 208 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 9053. Up to 1217 conditions per place. [2024-05-12 12:40:23,757 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 124 selfloop transitions, 32 changer transitions 0/163 dead transitions. [2024-05-12 12:40:23,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 163 transitions, 1807 flow [2024-05-12 12:40:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 12:40:23,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-05-12 12:40:23,758 INFO L175 Difference]: Start difference. First operand has 162 places, 137 transitions, 1387 flow. Second operand 9 states and 141 transitions. [2024-05-12 12:40:23,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 163 transitions, 1807 flow [2024-05-12 12:40:23,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 163 transitions, 1753 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 12:40:23,822 INFO L231 Difference]: Finished difference. Result has 165 places, 139 transitions, 1444 flow [2024-05-12 12:40:23,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1444, PETRI_PLACES=165, PETRI_TRANSITIONS=139} [2024-05-12 12:40:23,823 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 121 predicate places. [2024-05-12 12:40:23,823 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 139 transitions, 1444 flow [2024-05-12 12:40:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:23,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:23,823 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 12:40:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 12:40:23,824 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:23,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash -53211097, now seen corresponding path program 4 times [2024-05-12 12:40:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937699773] [2024-05-12 12:40:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:23,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:26,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937699773] [2024-05-12 12:40:26,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937699773] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:26,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:26,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:26,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275367074] [2024-05-12 12:40:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:26,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:26,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:26,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:26,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 139 transitions, 1444 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:26,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:26,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:26,769 INFO L124 PetriNetUnfolderBase]: 840/1542 cut-off events. [2024-05-12 12:40:26,769 INFO L125 PetriNetUnfolderBase]: For 42377/42377 co-relation queries the response was YES. [2024-05-12 12:40:26,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 1542 events. 840/1542 cut-off events. For 42377/42377 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7832 event pairs, 211 based on Foata normal form. 2/1477 useless extension candidates. Maximal degree in co-relation 8939. Up to 1255 conditions per place. [2024-05-12 12:40:26,777 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 129 selfloop transitions, 26 changer transitions 0/162 dead transitions. [2024-05-12 12:40:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 162 transitions, 1820 flow [2024-05-12 12:40:26,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:26,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 12:40:26,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-05-12 12:40:26,778 INFO L175 Difference]: Start difference. First operand has 165 places, 139 transitions, 1444 flow. Second operand 9 states and 139 transitions. [2024-05-12 12:40:26,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 162 transitions, 1820 flow [2024-05-12 12:40:26,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 1717 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-05-12 12:40:26,851 INFO L231 Difference]: Finished difference. Result has 167 places, 139 transitions, 1398 flow [2024-05-12 12:40:26,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1398, PETRI_PLACES=167, PETRI_TRANSITIONS=139} [2024-05-12 12:40:26,852 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 123 predicate places. [2024-05-12 12:40:26,852 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 139 transitions, 1398 flow [2024-05-12 12:40:26,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:26,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:26,852 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 12:40:26,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 12:40:26,852 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:26,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash 148715459, now seen corresponding path program 1 times [2024-05-12 12:40:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920822008] [2024-05-12 12:40:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:29,934 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 12:40:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920822008] [2024-05-12 12:40:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920822008] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:29,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:29,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939900457] [2024-05-12 12:40:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:29,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:29,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:30,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:30,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 139 transitions, 1398 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:30,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:30,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:30,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:30,740 INFO L124 PetriNetUnfolderBase]: 852/1561 cut-off events. [2024-05-12 12:40:30,741 INFO L125 PetriNetUnfolderBase]: For 43666/43666 co-relation queries the response was YES. [2024-05-12 12:40:30,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9060 conditions, 1561 events. 852/1561 cut-off events. For 43666/43666 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7952 event pairs, 246 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 8976. Up to 1339 conditions per place. [2024-05-12 12:40:30,753 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 141 selfloop transitions, 21 changer transitions 0/169 dead transitions. [2024-05-12 12:40:30,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 169 transitions, 1868 flow [2024-05-12 12:40:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:40:30,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:40:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-05-12 12:40:30,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-05-12 12:40:30,754 INFO L175 Difference]: Start difference. First operand has 167 places, 139 transitions, 1398 flow. Second operand 10 states and 148 transitions. [2024-05-12 12:40:30,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 169 transitions, 1868 flow [2024-05-12 12:40:30,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 169 transitions, 1790 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 12:40:30,834 INFO L231 Difference]: Finished difference. Result has 169 places, 141 transitions, 1415 flow [2024-05-12 12:40:30,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1415, PETRI_PLACES=169, PETRI_TRANSITIONS=141} [2024-05-12 12:40:30,834 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 125 predicate places. [2024-05-12 12:40:30,834 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 141 transitions, 1415 flow [2024-05-12 12:40:30,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:30,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:30,834 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 12:40:30,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 12:40:30,835 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:30,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:30,835 INFO L85 PathProgramCache]: Analyzing trace with hash -716163517, now seen corresponding path program 5 times [2024-05-12 12:40:30,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:30,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265741417] [2024-05-12 12:40:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:30,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:34,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:34,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265741417] [2024-05-12 12:40:34,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265741417] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:34,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:34,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:40:34,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089449653] [2024-05-12 12:40:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:34,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:40:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:34,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:40:34,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:40:34,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:34,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 141 transitions, 1415 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:34,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:34,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:34,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:34,780 INFO L124 PetriNetUnfolderBase]: 852/1561 cut-off events. [2024-05-12 12:40:34,780 INFO L125 PetriNetUnfolderBase]: For 43331/43334 co-relation queries the response was YES. [2024-05-12 12:40:34,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9005 conditions, 1561 events. 852/1561 cut-off events. For 43331/43334 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7979 event pairs, 210 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 8920. Up to 1256 conditions per place. [2024-05-12 12:40:34,792 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 130 selfloop transitions, 27 changer transitions 0/164 dead transitions. [2024-05-12 12:40:34,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 164 transitions, 1853 flow [2024-05-12 12:40:34,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 12:40:34,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 12:40:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-05-12 12:40:34,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:40:34,793 INFO L175 Difference]: Start difference. First operand has 169 places, 141 transitions, 1415 flow. Second operand 8 states and 128 transitions. [2024-05-12 12:40:34,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 164 transitions, 1853 flow [2024-05-12 12:40:34,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 164 transitions, 1775 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-05-12 12:40:34,888 INFO L231 Difference]: Finished difference. Result has 168 places, 143 transitions, 1456 flow [2024-05-12 12:40:34,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1456, PETRI_PLACES=168, PETRI_TRANSITIONS=143} [2024-05-12 12:40:34,888 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 124 predicate places. [2024-05-12 12:40:34,888 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 143 transitions, 1456 flow [2024-05-12 12:40:34,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:34,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:34,889 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 12:40:34,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 12:40:34,889 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:34,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -715917563, now seen corresponding path program 5 times [2024-05-12 12:40:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:34,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052978653] [2024-05-12 12:40:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:37,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:37,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052978653] [2024-05-12 12:40:37,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052978653] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:37,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:37,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:37,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429418386] [2024-05-12 12:40:37,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:37,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:37,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:37,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:37,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:37,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:37,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 143 transitions, 1456 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:37,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:37,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:37,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:38,497 INFO L124 PetriNetUnfolderBase]: 878/1601 cut-off events. [2024-05-12 12:40:38,498 INFO L125 PetriNetUnfolderBase]: For 48187/48190 co-relation queries the response was YES. [2024-05-12 12:40:38,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9430 conditions, 1601 events. 878/1601 cut-off events. For 48187/48190 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8169 event pairs, 210 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 9344. Up to 1233 conditions per place. [2024-05-12 12:40:38,511 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 131 selfloop transitions, 35 changer transitions 0/173 dead transitions. [2024-05-12 12:40:38,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 173 transitions, 2042 flow [2024-05-12 12:40:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-05-12 12:40:38,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-05-12 12:40:38,513 INFO L175 Difference]: Start difference. First operand has 168 places, 143 transitions, 1456 flow. Second operand 9 states and 146 transitions. [2024-05-12 12:40:38,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 173 transitions, 2042 flow [2024-05-12 12:40:38,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 1939 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 12:40:38,603 INFO L231 Difference]: Finished difference. Result has 171 places, 147 transitions, 1516 flow [2024-05-12 12:40:38,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1516, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2024-05-12 12:40:38,604 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 127 predicate places. [2024-05-12 12:40:38,604 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 1516 flow [2024-05-12 12:40:38,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:38,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:38,604 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 12:40:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 12:40:38,604 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:38,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash 426867545, now seen corresponding path program 6 times [2024-05-12 12:40:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600616740] [2024-05-12 12:40:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600616740] [2024-05-12 12:40:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600616740] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:41,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663878539] [2024-05-12 12:40:41,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:41,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:41,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:41,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 1516 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:41,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:41,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:41,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:42,060 INFO L124 PetriNetUnfolderBase]: 904/1641 cut-off events. [2024-05-12 12:40:42,060 INFO L125 PetriNetUnfolderBase]: For 52505/52508 co-relation queries the response was YES. [2024-05-12 12:40:42,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9819 conditions, 1641 events. 904/1641 cut-off events. For 52505/52508 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8390 event pairs, 201 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 9732. Up to 1197 conditions per place. [2024-05-12 12:40:42,073 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 123 selfloop transitions, 47 changer transitions 0/177 dead transitions. [2024-05-12 12:40:42,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 177 transitions, 2120 flow [2024-05-12 12:40:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:42,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-05-12 12:40:42,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-05-12 12:40:42,074 INFO L175 Difference]: Start difference. First operand has 171 places, 147 transitions, 1516 flow. Second operand 9 states and 147 transitions. [2024-05-12 12:40:42,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 177 transitions, 2120 flow [2024-05-12 12:40:42,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 177 transitions, 2037 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-05-12 12:40:42,178 INFO L231 Difference]: Finished difference. Result has 175 places, 151 transitions, 1628 flow [2024-05-12 12:40:42,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1628, PETRI_PLACES=175, PETRI_TRANSITIONS=151} [2024-05-12 12:40:42,178 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 131 predicate places. [2024-05-12 12:40:42,178 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 151 transitions, 1628 flow [2024-05-12 12:40:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:42,178 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 12:40:42,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 12:40:42,179 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:42,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash -715925933, now seen corresponding path program 7 times [2024-05-12 12:40:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:42,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514018883] [2024-05-12 12:40:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:42,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514018883] [2024-05-12 12:40:44,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514018883] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:44,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:44,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:44,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460075174] [2024-05-12 12:40:44,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:44,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:44,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:44,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:44,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:44,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 151 transitions, 1628 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:44,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:44,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:44,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:45,568 INFO L124 PetriNetUnfolderBase]: 915/1658 cut-off events. [2024-05-12 12:40:45,568 INFO L125 PetriNetUnfolderBase]: For 54259/54262 co-relation queries the response was YES. [2024-05-12 12:40:45,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10086 conditions, 1658 events. 915/1658 cut-off events. For 54259/54262 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8489 event pairs, 214 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 9997. Up to 1322 conditions per place. [2024-05-12 12:40:45,580 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 138 selfloop transitions, 32 changer transitions 0/177 dead transitions. [2024-05-12 12:40:45,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 177 transitions, 2076 flow [2024-05-12 12:40:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 12:40:45,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-05-12 12:40:45,582 INFO L175 Difference]: Start difference. First operand has 175 places, 151 transitions, 1628 flow. Second operand 9 states and 143 transitions. [2024-05-12 12:40:45,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 177 transitions, 2076 flow [2024-05-12 12:40:45,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 1968 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-05-12 12:40:45,690 INFO L231 Difference]: Finished difference. Result has 179 places, 153 transitions, 1631 flow [2024-05-12 12:40:45,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1631, PETRI_PLACES=179, PETRI_TRANSITIONS=153} [2024-05-12 12:40:45,691 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 135 predicate places. [2024-05-12 12:40:45,691 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 153 transitions, 1631 flow [2024-05-12 12:40:45,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:45,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:45,691 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 12:40:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 12:40:45,692 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:45,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:45,692 INFO L85 PathProgramCache]: Analyzing trace with hash -707574781, now seen corresponding path program 2 times [2024-05-12 12:40:45,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:45,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973611197] [2024-05-12 12:40:45,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:45,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:48,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:48,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973611197] [2024-05-12 12:40:48,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973611197] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:48,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:48,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:48,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452271773] [2024-05-12 12:40:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:48,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:48,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:48,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:48,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 153 transitions, 1631 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:48,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:48,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:49,619 INFO L124 PetriNetUnfolderBase]: 927/1677 cut-off events. [2024-05-12 12:40:49,619 INFO L125 PetriNetUnfolderBase]: For 55570/55573 co-relation queries the response was YES. [2024-05-12 12:40:49,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10213 conditions, 1677 events. 927/1677 cut-off events. For 55570/55573 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8607 event pairs, 255 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 10122. Up to 1431 conditions per place. [2024-05-12 12:40:49,633 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 148 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-05-12 12:40:49,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 180 transitions, 2113 flow [2024-05-12 12:40:49,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:40:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:40:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-05-12 12:40:49,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-05-12 12:40:49,634 INFO L175 Difference]: Start difference. First operand has 179 places, 153 transitions, 1631 flow. Second operand 10 states and 148 transitions. [2024-05-12 12:40:49,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 180 transitions, 2113 flow [2024-05-12 12:40:49,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 180 transitions, 2026 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 12:40:49,760 INFO L231 Difference]: Finished difference. Result has 182 places, 155 transitions, 1651 flow [2024-05-12 12:40:49,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1651, PETRI_PLACES=182, PETRI_TRANSITIONS=155} [2024-05-12 12:40:49,761 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 138 predicate places. [2024-05-12 12:40:49,761 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 155 transitions, 1651 flow [2024-05-12 12:40:49,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:49,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:49,761 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 12:40:49,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 12:40:49,761 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:49,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash -716156573, now seen corresponding path program 8 times [2024-05-12 12:40:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:49,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4614877] [2024-05-12 12:40:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:40:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4614877] [2024-05-12 12:40:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4614877] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:51,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:51,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:40:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689367223] [2024-05-12 12:40:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:51,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:40:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:40:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:40:52,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:52,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 155 transitions, 1651 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:52,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:52,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:52,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:52,621 INFO L124 PetriNetUnfolderBase]: 923/1670 cut-off events. [2024-05-12 12:40:52,621 INFO L125 PetriNetUnfolderBase]: For 54326/54329 co-relation queries the response was YES. [2024-05-12 12:40:52,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10055 conditions, 1670 events. 923/1670 cut-off events. For 54326/54329 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8554 event pairs, 217 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 9963. Up to 1357 conditions per place. [2024-05-12 12:40:52,634 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 141 selfloop transitions, 29 changer transitions 0/177 dead transitions. [2024-05-12 12:40:52,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 177 transitions, 2055 flow [2024-05-12 12:40:52,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-05-12 12:40:52,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-05-12 12:40:52,635 INFO L175 Difference]: Start difference. First operand has 182 places, 155 transitions, 1651 flow. Second operand 9 states and 139 transitions. [2024-05-12 12:40:52,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 177 transitions, 2055 flow [2024-05-12 12:40:52,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 177 transitions, 1946 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 12:40:52,772 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1605 flow [2024-05-12 12:40:52,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1605, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-05-12 12:40:52,773 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 139 predicate places. [2024-05-12 12:40:52,773 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1605 flow [2024-05-12 12:40:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:52,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:52,773 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 12:40:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 12:40:52,773 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:52,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 426859175, now seen corresponding path program 9 times [2024-05-12 12:40:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842416474] [2024-05-12 12:40:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:55,174 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 12:40:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842416474] [2024-05-12 12:40:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842416474] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:55,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:55,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:40:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926821661] [2024-05-12 12:40:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:55,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:40:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:40:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:40:55,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:55,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1605 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:55,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:55,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:55,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:40:55,936 INFO L124 PetriNetUnfolderBase]: 919/1664 cut-off events. [2024-05-12 12:40:55,936 INFO L125 PetriNetUnfolderBase]: For 52650/52653 co-relation queries the response was YES. [2024-05-12 12:40:55,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9874 conditions, 1664 events. 919/1664 cut-off events. For 52650/52653 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8529 event pairs, 201 based on Foata normal form. 2/1586 useless extension candidates. Maximal degree in co-relation 9781. Up to 1246 conditions per place. [2024-05-12 12:40:55,950 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 127 selfloop transitions, 44 changer transitions 0/178 dead transitions. [2024-05-12 12:40:55,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 178 transitions, 2015 flow [2024-05-12 12:40:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:40:55,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:40:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 12:40:55,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-05-12 12:40:55,951 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1605 flow. Second operand 9 states and 142 transitions. [2024-05-12 12:40:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 178 transitions, 2015 flow [2024-05-12 12:40:56,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 178 transitions, 1921 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-05-12 12:40:56,084 INFO L231 Difference]: Finished difference. Result has 184 places, 155 transitions, 1604 flow [2024-05-12 12:40:56,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1604, PETRI_PLACES=184, PETRI_TRANSITIONS=155} [2024-05-12 12:40:56,084 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 140 predicate places. [2024-05-12 12:40:56,084 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 155 transitions, 1604 flow [2024-05-12 12:40:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:56,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:40:56,085 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 12:40:56,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 12:40:56,085 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:40:56,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:40:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash 427166757, now seen corresponding path program 3 times [2024-05-12 12:40:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:40:56,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883906503] [2024-05-12 12:40:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:40:56,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:40:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:40:59,312 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 12:40:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:40:59,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883906503] [2024-05-12 12:40:59,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883906503] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:40:59,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:40:59,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:40:59,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815836244] [2024-05-12 12:40:59,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:40:59,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:40:59,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:40:59,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:40:59,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:40:59,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:40:59,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 155 transitions, 1604 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:40:59,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:40:59,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:40:59,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:00,117 INFO L124 PetriNetUnfolderBase]: 931/1683 cut-off events. [2024-05-12 12:41:00,118 INFO L125 PetriNetUnfolderBase]: For 54650/54653 co-relation queries the response was YES. [2024-05-12 12:41:00,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 1683 events. 931/1683 cut-off events. For 54650/54653 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8625 event pairs, 247 based on Foata normal form. 2/1604 useless extension candidates. Maximal degree in co-relation 9948. Up to 1404 conditions per place. [2024-05-12 12:41:00,131 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 143 selfloop transitions, 32 changer transitions 0/182 dead transitions. [2024-05-12 12:41:00,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 182 transitions, 2094 flow [2024-05-12 12:41:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:00,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-05-12 12:41:00,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3725 [2024-05-12 12:41:00,132 INFO L175 Difference]: Start difference. First operand has 184 places, 155 transitions, 1604 flow. Second operand 10 states and 149 transitions. [2024-05-12 12:41:00,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 182 transitions, 2094 flow [2024-05-12 12:41:00,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 182 transitions, 1999 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:00,266 INFO L231 Difference]: Finished difference. Result has 186 places, 157 transitions, 1634 flow [2024-05-12 12:41:00,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1634, PETRI_PLACES=186, PETRI_TRANSITIONS=157} [2024-05-12 12:41:00,267 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 142 predicate places. [2024-05-12 12:41:00,267 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 157 transitions, 1634 flow [2024-05-12 12:41:00,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:00,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:00,267 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 12:41:00,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 12:41:00,268 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:00,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash -446473847, now seen corresponding path program 10 times [2024-05-12 12:41:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:00,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226175567] [2024-05-12 12:41:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226175567] [2024-05-12 12:41:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226175567] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:02,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:02,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 12:41:02,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213078075] [2024-05-12 12:41:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:02,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 12:41:02,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 12:41:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 12:41:02,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:02,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 157 transitions, 1634 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:02,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:02,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:02,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:03,445 INFO L124 PetriNetUnfolderBase]: 927/1676 cut-off events. [2024-05-12 12:41:03,445 INFO L125 PetriNetUnfolderBase]: For 53196/53199 co-relation queries the response was YES. [2024-05-12 12:41:03,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 1676 events. 927/1676 cut-off events. For 53196/53199 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8577 event pairs, 197 based on Foata normal form. 2/1596 useless extension candidates. Maximal degree in co-relation 9781. Up to 1091 conditions per place. [2024-05-12 12:41:03,458 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 108 selfloop transitions, 68 changer transitions 0/183 dead transitions. [2024-05-12 12:41:03,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 183 transitions, 2108 flow [2024-05-12 12:41:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-05-12 12:41:03,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-05-12 12:41:03,459 INFO L175 Difference]: Start difference. First operand has 186 places, 157 transitions, 1634 flow. Second operand 9 states and 145 transitions. [2024-05-12 12:41:03,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 183 transitions, 2108 flow [2024-05-12 12:41:03,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 183 transitions, 2003 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:03,598 INFO L231 Difference]: Finished difference. Result has 187 places, 159 transitions, 1724 flow [2024-05-12 12:41:03,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1724, PETRI_PLACES=187, PETRI_TRANSITIONS=159} [2024-05-12 12:41:03,599 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 143 predicate places. [2024-05-12 12:41:03,599 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 159 transitions, 1724 flow [2024-05-12 12:41:03,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:03,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:03,599 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 12:41:03,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 12:41:03,599 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:03,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1890407751, now seen corresponding path program 4 times [2024-05-12 12:41:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321961631] [2024-05-12 12:41:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:06,782 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 12:41:06,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:06,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321961631] [2024-05-12 12:41:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321961631] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:06,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:06,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:06,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528663928] [2024-05-12 12:41:06,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:06,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:06,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:06,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:06,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 159 transitions, 1724 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:06,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:06,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:06,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:07,557 INFO L124 PetriNetUnfolderBase]: 939/1695 cut-off events. [2024-05-12 12:41:07,558 INFO L125 PetriNetUnfolderBase]: For 55361/55364 co-relation queries the response was YES. [2024-05-12 12:41:07,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10214 conditions, 1695 events. 939/1695 cut-off events. For 55361/55364 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8698 event pairs, 243 based on Foata normal form. 2/1614 useless extension candidates. Maximal degree in co-relation 10118. Up to 1370 conditions per place. [2024-05-12 12:41:07,569 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 138 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-05-12 12:41:07,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 186 transitions, 2226 flow [2024-05-12 12:41:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:07,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:07,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-05-12 12:41:07,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 12:41:07,571 INFO L175 Difference]: Start difference. First operand has 187 places, 159 transitions, 1724 flow. Second operand 10 states and 150 transitions. [2024-05-12 12:41:07,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 186 transitions, 2226 flow [2024-05-12 12:41:07,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 186 transitions, 2051 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-05-12 12:41:07,696 INFO L231 Difference]: Finished difference. Result has 190 places, 161 transitions, 1696 flow [2024-05-12 12:41:07,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1696, PETRI_PLACES=190, PETRI_TRANSITIONS=161} [2024-05-12 12:41:07,696 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 146 predicate places. [2024-05-12 12:41:07,696 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 161 transitions, 1696 flow [2024-05-12 12:41:07,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:07,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:07,697 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 12:41:07,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 12:41:07,697 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:07,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash 781441887, now seen corresponding path program 5 times [2024-05-12 12:41:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:07,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996374246] [2024-05-12 12:41:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:10,404 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 12:41:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996374246] [2024-05-12 12:41:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996374246] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:10,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:10,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630937198] [2024-05-12 12:41:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:10,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:10,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:10,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:10,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 161 transitions, 1696 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:10,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:10,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:10,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:11,137 INFO L124 PetriNetUnfolderBase]: 959/1723 cut-off events. [2024-05-12 12:41:11,137 INFO L125 PetriNetUnfolderBase]: For 59136/59136 co-relation queries the response was YES. [2024-05-12 12:41:11,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10393 conditions, 1723 events. 959/1723 cut-off events. For 59136/59136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8824 event pairs, 286 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 10296. Up to 1538 conditions per place. [2024-05-12 12:41:11,150 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 160 selfloop transitions, 19 changer transitions 0/186 dead transitions. [2024-05-12 12:41:11,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 186 transitions, 2352 flow [2024-05-12 12:41:11,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-05-12 12:41:11,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-05-12 12:41:11,151 INFO L175 Difference]: Start difference. First operand has 190 places, 161 transitions, 1696 flow. Second operand 10 states and 145 transitions. [2024-05-12 12:41:11,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 186 transitions, 2352 flow [2024-05-12 12:41:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 186 transitions, 2225 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:11,286 INFO L231 Difference]: Finished difference. Result has 192 places, 165 transitions, 1736 flow [2024-05-12 12:41:11,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1736, PETRI_PLACES=192, PETRI_TRANSITIONS=165} [2024-05-12 12:41:11,286 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 148 predicate places. [2024-05-12 12:41:11,286 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 165 transitions, 1736 flow [2024-05-12 12:41:11,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:11,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:11,287 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 12:41:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 12:41:11,287 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:11,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 781429797, now seen corresponding path program 6 times [2024-05-12 12:41:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623724388] [2024-05-12 12:41:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:15,061 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 12:41:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:15,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623724388] [2024-05-12 12:41:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623724388] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:15,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:15,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:15,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651633357] [2024-05-12 12:41:15,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:15,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:15,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:15,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:15,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 165 transitions, 1736 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:15,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:15,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:15,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:15,883 INFO L124 PetriNetUnfolderBase]: 955/1717 cut-off events. [2024-05-12 12:41:15,883 INFO L125 PetriNetUnfolderBase]: For 57107/57107 co-relation queries the response was YES. [2024-05-12 12:41:15,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10133 conditions, 1717 events. 955/1717 cut-off events. For 57107/57107 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8783 event pairs, 286 based on Foata normal form. 2/1636 useless extension candidates. Maximal degree in co-relation 10035. Up to 1550 conditions per place. [2024-05-12 12:41:15,897 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 161 selfloop transitions, 16 changer transitions 0/184 dead transitions. [2024-05-12 12:41:15,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 184 transitions, 2150 flow [2024-05-12 12:41:15,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-05-12 12:41:15,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3525 [2024-05-12 12:41:15,898 INFO L175 Difference]: Start difference. First operand has 192 places, 165 transitions, 1736 flow. Second operand 10 states and 141 transitions. [2024-05-12 12:41:15,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 184 transitions, 2150 flow [2024-05-12 12:41:16,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 184 transitions, 2030 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-05-12 12:41:16,040 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 1653 flow [2024-05-12 12:41:16,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1653, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2024-05-12 12:41:16,040 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 152 predicate places. [2024-05-12 12:41:16,040 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 1653 flow [2024-05-12 12:41:16,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:16,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:16,041 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 12:41:16,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 12:41:16,041 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:16,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:16,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1046010296, now seen corresponding path program 1 times [2024-05-12 12:41:16,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:16,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482079460] [2024-05-12 12:41:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:18,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:18,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482079460] [2024-05-12 12:41:18,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482079460] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:18,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:18,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204317126] [2024-05-12 12:41:18,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:18,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:18,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:18,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:18,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 1653 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:18,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:18,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:18,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:19,136 INFO L124 PetriNetUnfolderBase]: 975/1761 cut-off events. [2024-05-12 12:41:19,137 INFO L125 PetriNetUnfolderBase]: For 57919/57919 co-relation queries the response was YES. [2024-05-12 12:41:19,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10285 conditions, 1761 events. 975/1761 cut-off events. For 57919/57919 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9103 event pairs, 146 based on Foata normal form. 2/1681 useless extension candidates. Maximal degree in co-relation 10185. Up to 1418 conditions per place. [2024-05-12 12:41:19,150 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 169 selfloop transitions, 24 changer transitions 0/200 dead transitions. [2024-05-12 12:41:19,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 200 transitions, 2219 flow [2024-05-12 12:41:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 12:41:19,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-05-12 12:41:19,151 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 1653 flow. Second operand 9 states and 143 transitions. [2024-05-12 12:41:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 200 transitions, 2219 flow [2024-05-12 12:41:19,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 200 transitions, 2182 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 12:41:19,295 INFO L231 Difference]: Finished difference. Result has 197 places, 169 transitions, 1720 flow [2024-05-12 12:41:19,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1720, PETRI_PLACES=197, PETRI_TRANSITIONS=169} [2024-05-12 12:41:19,296 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 153 predicate places. [2024-05-12 12:41:19,296 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 169 transitions, 1720 flow [2024-05-12 12:41:19,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:19,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:19,296 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 12:41:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 12:41:19,296 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:19,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1044101936, now seen corresponding path program 2 times [2024-05-12 12:41:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934592469] [2024-05-12 12:41:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:21,703 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 12:41:21,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:21,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934592469] [2024-05-12 12:41:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934592469] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:21,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:21,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241342995] [2024-05-12 12:41:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:21,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:21,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:21,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:21,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 169 transitions, 1720 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:21,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:21,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:21,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:22,564 INFO L124 PetriNetUnfolderBase]: 995/1803 cut-off events. [2024-05-12 12:41:22,564 INFO L125 PetriNetUnfolderBase]: For 60973/60973 co-relation queries the response was YES. [2024-05-12 12:41:22,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10756 conditions, 1803 events. 995/1803 cut-off events. For 60973/60973 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9443 event pairs, 254 based on Foata normal form. 2/1718 useless extension candidates. Maximal degree in co-relation 10654. Up to 1525 conditions per place. [2024-05-12 12:41:22,579 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 171 selfloop transitions, 21 changer transitions 0/199 dead transitions. [2024-05-12 12:41:22,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 199 transitions, 2258 flow [2024-05-12 12:41:22,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 12:41:22,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-05-12 12:41:22,580 INFO L175 Difference]: Start difference. First operand has 197 places, 169 transitions, 1720 flow. Second operand 9 states and 141 transitions. [2024-05-12 12:41:22,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 199 transitions, 2258 flow [2024-05-12 12:41:22,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 199 transitions, 2202 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 12:41:22,738 INFO L231 Difference]: Finished difference. Result has 200 places, 170 transitions, 1734 flow [2024-05-12 12:41:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=200, PETRI_TRANSITIONS=170} [2024-05-12 12:41:22,739 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 156 predicate places. [2024-05-12 12:41:22,739 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 170 transitions, 1734 flow [2024-05-12 12:41:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:22,739 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 12:41:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 12:41:22,739 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:22,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1021005978, now seen corresponding path program 3 times [2024-05-12 12:41:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202895157] [2024-05-12 12:41:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:25,011 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 12:41:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:25,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202895157] [2024-05-12 12:41:25,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202895157] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:25,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:25,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970003879] [2024-05-12 12:41:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:25,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:25,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:25,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 170 transitions, 1734 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:25,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:25,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:25,885 INFO L124 PetriNetUnfolderBase]: 1015/1846 cut-off events. [2024-05-12 12:41:25,886 INFO L125 PetriNetUnfolderBase]: For 63887/63887 co-relation queries the response was YES. [2024-05-12 12:41:25,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11028 conditions, 1846 events. 1015/1846 cut-off events. For 63887/63887 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9782 event pairs, 247 based on Foata normal form. 2/1758 useless extension candidates. Maximal degree in co-relation 10925. Up to 1553 conditions per place. [2024-05-12 12:41:25,900 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 175 selfloop transitions, 21 changer transitions 0/203 dead transitions. [2024-05-12 12:41:25,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 203 transitions, 2306 flow [2024-05-12 12:41:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 12:41:25,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-05-12 12:41:25,901 INFO L175 Difference]: Start difference. First operand has 200 places, 170 transitions, 1734 flow. Second operand 9 states and 142 transitions. [2024-05-12 12:41:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 203 transitions, 2306 flow [2024-05-12 12:41:26,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 203 transitions, 2252 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 12:41:26,080 INFO L231 Difference]: Finished difference. Result has 203 places, 173 transitions, 1777 flow [2024-05-12 12:41:26,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1777, PETRI_PLACES=203, PETRI_TRANSITIONS=173} [2024-05-12 12:41:26,081 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-05-12 12:41:26,081 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 173 transitions, 1777 flow [2024-05-12 12:41:26,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:26,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:26,081 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 12:41:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 12:41:26,081 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:26,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1834209852, now seen corresponding path program 1 times [2024-05-12 12:41:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182134151] [2024-05-12 12:41:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:28,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:28,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182134151] [2024-05-12 12:41:28,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182134151] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:28,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:28,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:41:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300341852] [2024-05-12 12:41:28,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:28,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:41:28,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:28,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:41:28,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:41:29,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:29,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 173 transitions, 1777 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:29,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:29,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:29,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:29,695 INFO L124 PetriNetUnfolderBase]: 1026/1863 cut-off events. [2024-05-12 12:41:29,695 INFO L125 PetriNetUnfolderBase]: For 66095/66095 co-relation queries the response was YES. [2024-05-12 12:41:29,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11175 conditions, 1863 events. 1026/1863 cut-off events. For 66095/66095 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9894 event pairs, 257 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 11070. Up to 1576 conditions per place. [2024-05-12 12:41:29,711 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 172 selfloop transitions, 24 changer transitions 0/203 dead transitions. [2024-05-12 12:41:29,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 203 transitions, 2305 flow [2024-05-12 12:41:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:29,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-05-12 12:41:29,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3775 [2024-05-12 12:41:29,712 INFO L175 Difference]: Start difference. First operand has 203 places, 173 transitions, 1777 flow. Second operand 10 states and 151 transitions. [2024-05-12 12:41:29,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 203 transitions, 2305 flow [2024-05-12 12:41:29,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 2240 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-05-12 12:41:29,890 INFO L231 Difference]: Finished difference. Result has 207 places, 175 transitions, 1819 flow [2024-05-12 12:41:29,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1819, PETRI_PLACES=207, PETRI_TRANSITIONS=175} [2024-05-12 12:41:29,890 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 163 predicate places. [2024-05-12 12:41:29,890 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 175 transitions, 1819 flow [2024-05-12 12:41:29,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:29,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:29,890 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 12:41:29,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 12:41:29,891 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:29,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1660557462, now seen corresponding path program 2 times [2024-05-12 12:41:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:29,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942992711] [2024-05-12 12:41:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:32,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:32,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942992711] [2024-05-12 12:41:32,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942992711] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:32,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:32,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:32,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733734186] [2024-05-12 12:41:32,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:32,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:32,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:32,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:32,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 175 transitions, 1819 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:32,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:32,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:32,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:33,759 INFO L124 PetriNetUnfolderBase]: 1052/1902 cut-off events. [2024-05-12 12:41:33,760 INFO L125 PetriNetUnfolderBase]: For 72017/72017 co-relation queries the response was YES. [2024-05-12 12:41:33,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11571 conditions, 1902 events. 1052/1902 cut-off events. For 72017/72017 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10094 event pairs, 240 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 11465. Up to 1422 conditions per place. [2024-05-12 12:41:33,774 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 154 selfloop transitions, 48 changer transitions 0/209 dead transitions. [2024-05-12 12:41:33,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 209 transitions, 2543 flow [2024-05-12 12:41:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:41:33,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:41:33,775 INFO L175 Difference]: Start difference. First operand has 207 places, 175 transitions, 1819 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:41:33,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 209 transitions, 2543 flow [2024-05-12 12:41:33,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 209 transitions, 2456 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:33,928 INFO L231 Difference]: Finished difference. Result has 209 places, 179 transitions, 1946 flow [2024-05-12 12:41:33,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1946, PETRI_PLACES=209, PETRI_TRANSITIONS=179} [2024-05-12 12:41:33,929 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 165 predicate places. [2024-05-12 12:41:33,929 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 179 transitions, 1946 flow [2024-05-12 12:41:33,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:33,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:33,929 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 12:41:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 12:41:33,929 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:33,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1018592643, now seen corresponding path program 1 times [2024-05-12 12:41:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198199359] [2024-05-12 12:41:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:36,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:36,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198199359] [2024-05-12 12:41:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198199359] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:36,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:36,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:36,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222069233] [2024-05-12 12:41:36,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:36,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:36,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:36,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:37,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:37,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 179 transitions, 1946 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:37,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:37,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:37,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:37,800 INFO L124 PetriNetUnfolderBase]: 1050/1900 cut-off events. [2024-05-12 12:41:37,800 INFO L125 PetriNetUnfolderBase]: For 70570/70570 co-relation queries the response was YES. [2024-05-12 12:41:37,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11570 conditions, 1900 events. 1050/1900 cut-off events. For 70570/70570 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10089 event pairs, 282 based on Foata normal form. 1/1807 useless extension candidates. Maximal degree in co-relation 11463. Up to 1630 conditions per place. [2024-05-12 12:41:37,817 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 170 selfloop transitions, 30 changer transitions 0/207 dead transitions. [2024-05-12 12:41:37,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 207 transitions, 2500 flow [2024-05-12 12:41:37,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-05-12 12:41:37,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-05-12 12:41:37,818 INFO L175 Difference]: Start difference. First operand has 209 places, 179 transitions, 1946 flow. Second operand 10 states and 148 transitions. [2024-05-12 12:41:37,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 207 transitions, 2500 flow [2024-05-12 12:41:38,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 207 transitions, 2388 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 12:41:38,004 INFO L231 Difference]: Finished difference. Result has 213 places, 181 transitions, 1970 flow [2024-05-12 12:41:38,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1970, PETRI_PLACES=213, PETRI_TRANSITIONS=181} [2024-05-12 12:41:38,004 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2024-05-12 12:41:38,004 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 181 transitions, 1970 flow [2024-05-12 12:41:38,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:38,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:38,005 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 12:41:38,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 12:41:38,005 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:38,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:38,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1649751792, now seen corresponding path program 4 times [2024-05-12 12:41:38,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:38,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811451649] [2024-05-12 12:41:38,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:38,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:40,527 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 12:41:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:40,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811451649] [2024-05-12 12:41:40,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811451649] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:40,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:40,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:40,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207009543] [2024-05-12 12:41:40,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:40,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:40,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:40,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:40,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:40,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 181 transitions, 1970 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:40,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:40,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:40,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:41,386 INFO L124 PetriNetUnfolderBase]: 1066/1928 cut-off events. [2024-05-12 12:41:41,387 INFO L125 PetriNetUnfolderBase]: For 74368/74368 co-relation queries the response was YES. [2024-05-12 12:41:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 1928 events. 1066/1928 cut-off events. For 74368/74368 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10275 event pairs, 248 based on Foata normal form. 2/1836 useless extension candidates. Maximal degree in co-relation 11678. Up to 1615 conditions per place. [2024-05-12 12:41:41,403 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 175 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2024-05-12 12:41:41,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 208 transitions, 2518 flow [2024-05-12 12:41:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-05-12 12:41:41,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-05-12 12:41:41,404 INFO L175 Difference]: Start difference. First operand has 213 places, 181 transitions, 1970 flow. Second operand 9 states and 141 transitions. [2024-05-12 12:41:41,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 208 transitions, 2518 flow [2024-05-12 12:41:41,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 208 transitions, 2406 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:41,578 INFO L231 Difference]: Finished difference. Result has 214 places, 183 transitions, 1983 flow [2024-05-12 12:41:41,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1983, PETRI_PLACES=214, PETRI_TRANSITIONS=183} [2024-05-12 12:41:41,579 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 170 predicate places. [2024-05-12 12:41:41,579 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 183 transitions, 1983 flow [2024-05-12 12:41:41,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:41,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:41,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:41:41,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 12:41:41,579 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:41,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1018315596, now seen corresponding path program 5 times [2024-05-12 12:41:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:41,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864663846] [2024-05-12 12:41:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:41,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:44,145 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 12:41:44,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864663846] [2024-05-12 12:41:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864663846] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:44,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:44,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841671936] [2024-05-12 12:41:44,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:44,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:44,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:44,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 183 transitions, 1983 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:44,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:44,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:44,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:45,166 INFO L124 PetriNetUnfolderBase]: 1086/1970 cut-off events. [2024-05-12 12:41:45,166 INFO L125 PetriNetUnfolderBase]: For 76453/76453 co-relation queries the response was YES. [2024-05-12 12:41:45,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 1970 events. 1086/1970 cut-off events. For 76453/76453 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10600 event pairs, 255 based on Foata normal form. 2/1876 useless extension candidates. Maximal degree in co-relation 11984. Up to 1601 conditions per place. [2024-05-12 12:41:45,183 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 174 selfloop transitions, 31 changer transitions 0/212 dead transitions. [2024-05-12 12:41:45,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 212 transitions, 2549 flow [2024-05-12 12:41:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-05-12 12:41:45,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:41:45,185 INFO L175 Difference]: Start difference. First operand has 214 places, 183 transitions, 1983 flow. Second operand 9 states and 144 transitions. [2024-05-12 12:41:45,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 212 transitions, 2549 flow [2024-05-12 12:41:45,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 212 transitions, 2440 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-05-12 12:41:45,377 INFO L231 Difference]: Finished difference. Result has 216 places, 184 transitions, 1970 flow [2024-05-12 12:41:45,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1970, PETRI_PLACES=216, PETRI_TRANSITIONS=184} [2024-05-12 12:41:45,377 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 172 predicate places. [2024-05-12 12:41:45,377 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 184 transitions, 1970 flow [2024-05-12 12:41:45,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:45,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:45,377 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 12:41:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 12:41:45,377 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:45,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1514329616, now seen corresponding path program 3 times [2024-05-12 12:41:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:45,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372946673] [2024-05-12 12:41:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:45,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:48,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:48,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372946673] [2024-05-12 12:41:48,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372946673] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:48,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:48,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642200307] [2024-05-12 12:41:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:48,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:48,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 184 transitions, 1970 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:48,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:48,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:48,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:49,567 INFO L124 PetriNetUnfolderBase]: 1097/1987 cut-off events. [2024-05-12 12:41:49,567 INFO L125 PetriNetUnfolderBase]: For 77748/77748 co-relation queries the response was YES. [2024-05-12 12:41:49,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12152 conditions, 1987 events. 1097/1987 cut-off events. For 77748/77748 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10701 event pairs, 255 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 12041. Up to 1616 conditions per place. [2024-05-12 12:41:49,586 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 172 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-05-12 12:41:49,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 213 transitions, 2508 flow [2024-05-12 12:41:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 12:41:49,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-05-12 12:41:49,587 INFO L175 Difference]: Start difference. First operand has 216 places, 184 transitions, 1970 flow. Second operand 10 states and 154 transitions. [2024-05-12 12:41:49,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 213 transitions, 2508 flow [2024-05-12 12:41:49,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 213 transitions, 2430 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-05-12 12:41:49,761 INFO L231 Difference]: Finished difference. Result has 219 places, 186 transitions, 2017 flow [2024-05-12 12:41:49,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2017, PETRI_PLACES=219, PETRI_TRANSITIONS=186} [2024-05-12 12:41:49,762 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 175 predicate places. [2024-05-12 12:41:49,762 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 186 transitions, 2017 flow [2024-05-12 12:41:49,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:49,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:49,762 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 12:41:49,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 12:41:49,762 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:49,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1660566762, now seen corresponding path program 4 times [2024-05-12 12:41:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:49,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692150676] [2024-05-12 12:41:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:52,685 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 12:41:52,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:52,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692150676] [2024-05-12 12:41:52,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692150676] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:52,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:52,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:52,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126928126] [2024-05-12 12:41:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:52,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:52,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:52,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:52,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:52,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 186 transitions, 2017 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:52,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:52,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:52,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:53,831 INFO L124 PetriNetUnfolderBase]: 1108/2004 cut-off events. [2024-05-12 12:41:53,832 INFO L125 PetriNetUnfolderBase]: For 79074/79074 co-relation queries the response was YES. [2024-05-12 12:41:53,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12218 conditions, 2004 events. 1108/2004 cut-off events. For 79074/79074 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10791 event pairs, 251 based on Foata normal form. 2/1907 useless extension candidates. Maximal degree in co-relation 12106. Up to 1576 conditions per place. [2024-05-12 12:41:53,847 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 167 selfloop transitions, 42 changer transitions 0/216 dead transitions. [2024-05-12 12:41:53,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 216 transitions, 2569 flow [2024-05-12 12:41:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:41:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:41:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 12:41:53,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-05-12 12:41:53,848 INFO L175 Difference]: Start difference. First operand has 219 places, 186 transitions, 2017 flow. Second operand 10 states and 156 transitions. [2024-05-12 12:41:53,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 216 transitions, 2569 flow [2024-05-12 12:41:54,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 216 transitions, 2468 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:54,051 INFO L231 Difference]: Finished difference. Result has 221 places, 188 transitions, 2061 flow [2024-05-12 12:41:54,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2061, PETRI_PLACES=221, PETRI_TRANSITIONS=188} [2024-05-12 12:41:54,052 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 177 predicate places. [2024-05-12 12:41:54,052 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 188 transitions, 2061 flow [2024-05-12 12:41:54,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:54,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:54,052 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 12:41:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 12:41:54,052 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:54,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1525398476, now seen corresponding path program 6 times [2024-05-12 12:41:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400897388] [2024-05-12 12:41:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:54,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:41:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:41:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:41:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400897388] [2024-05-12 12:41:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400897388] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:41:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:41:56,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:41:56,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721970558] [2024-05-12 12:41:56,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:41:56,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:41:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:41:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:41:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:41:56,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:41:56,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 188 transitions, 2061 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:56,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:41:56,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:41:56,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:41:57,374 INFO L124 PetriNetUnfolderBase]: 1124/2033 cut-off events. [2024-05-12 12:41:57,374 INFO L125 PetriNetUnfolderBase]: For 82092/82092 co-relation queries the response was YES. [2024-05-12 12:41:57,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 2033 events. 1124/2033 cut-off events. For 82092/82092 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11003 event pairs, 253 based on Foata normal form. 2/1936 useless extension candidates. Maximal degree in co-relation 12390. Up to 1705 conditions per place. [2024-05-12 12:41:57,391 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 185 selfloop transitions, 26 changer transitions 0/218 dead transitions. [2024-05-12 12:41:57,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 218 transitions, 2661 flow [2024-05-12 12:41:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:41:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:41:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 12:41:57,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-05-12 12:41:57,393 INFO L175 Difference]: Start difference. First operand has 221 places, 188 transitions, 2061 flow. Second operand 9 states and 142 transitions. [2024-05-12 12:41:57,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 218 transitions, 2661 flow [2024-05-12 12:41:57,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 218 transitions, 2540 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 12:41:57,585 INFO L231 Difference]: Finished difference. Result has 223 places, 192 transitions, 2098 flow [2024-05-12 12:41:57,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2098, PETRI_PLACES=223, PETRI_TRANSITIONS=192} [2024-05-12 12:41:57,586 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 179 predicate places. [2024-05-12 12:41:57,586 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 192 transitions, 2098 flow [2024-05-12 12:41:57,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:41:57,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:41:57,586 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 12:41:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 12:41:57,587 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:41:57,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:41:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1667976072, now seen corresponding path program 5 times [2024-05-12 12:41:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:41:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628340149] [2024-05-12 12:41:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:41:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:41:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:00,461 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 12:42:00,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:00,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628340149] [2024-05-12 12:42:00,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628340149] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:00,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:00,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:00,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255627773] [2024-05-12 12:42:00,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:00,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:00,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:00,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 192 transitions, 2098 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:00,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:00,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:00,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:01,516 INFO L124 PetriNetUnfolderBase]: 1120/2027 cut-off events. [2024-05-12 12:42:01,516 INFO L125 PetriNetUnfolderBase]: For 80044/80044 co-relation queries the response was YES. [2024-05-12 12:42:01,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 2027 events. 1120/2027 cut-off events. For 80044/80044 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10959 event pairs, 262 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 12187. Up to 1699 conditions per place. [2024-05-12 12:42:01,535 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 183 selfloop transitions, 28 changer transitions 0/218 dead transitions. [2024-05-12 12:42:01,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 218 transitions, 2594 flow [2024-05-12 12:42:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-05-12 12:42:01,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-05-12 12:42:01,536 INFO L175 Difference]: Start difference. First operand has 223 places, 192 transitions, 2098 flow. Second operand 10 states and 152 transitions. [2024-05-12 12:42:01,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 218 transitions, 2594 flow [2024-05-12 12:42:01,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 218 transitions, 2440 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-05-12 12:42:01,765 INFO L231 Difference]: Finished difference. Result has 227 places, 192 transitions, 2005 flow [2024-05-12 12:42:01,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2005, PETRI_PLACES=227, PETRI_TRANSITIONS=192} [2024-05-12 12:42:01,766 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 183 predicate places. [2024-05-12 12:42:01,766 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 192 transitions, 2005 flow [2024-05-12 12:42:01,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:01,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:01,766 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 12:42:01,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 12:42:01,766 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:01,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash 315213956, now seen corresponding path program 1 times [2024-05-12 12:42:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:01,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485339397] [2024-05-12 12:42:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:05,005 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 12:42:05,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:05,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485339397] [2024-05-12 12:42:05,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485339397] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:05,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:05,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:05,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585657948] [2024-05-12 12:42:05,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:05,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:05,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 192 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:05,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:05,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:05,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:05,986 INFO L124 PetriNetUnfolderBase]: 1152/2086 cut-off events. [2024-05-12 12:42:05,987 INFO L125 PetriNetUnfolderBase]: For 88173/88173 co-relation queries the response was YES. [2024-05-12 12:42:06,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12549 conditions, 2086 events. 1152/2086 cut-off events. For 88173/88173 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11415 event pairs, 303 based on Foata normal form. 4/1988 useless extension candidates. Maximal degree in co-relation 12433. Up to 1786 conditions per place. [2024-05-12 12:42:06,006 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 198 selfloop transitions, 23 changer transitions 0/228 dead transitions. [2024-05-12 12:42:06,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 228 transitions, 2667 flow [2024-05-12 12:42:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:42:06,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:42:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-05-12 12:42:06,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-05-12 12:42:06,007 INFO L175 Difference]: Start difference. First operand has 227 places, 192 transitions, 2005 flow. Second operand 11 states and 164 transitions. [2024-05-12 12:42:06,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 228 transitions, 2667 flow [2024-05-12 12:42:06,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 228 transitions, 2580 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-05-12 12:42:06,245 INFO L231 Difference]: Finished difference. Result has 229 places, 194 transitions, 2061 flow [2024-05-12 12:42:06,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2061, PETRI_PLACES=229, PETRI_TRANSITIONS=194} [2024-05-12 12:42:06,245 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 185 predicate places. [2024-05-12 12:42:06,245 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 194 transitions, 2061 flow [2024-05-12 12:42:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:06,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:06,246 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 12:42:06,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 12:42:06,246 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:06,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:06,246 INFO L85 PathProgramCache]: Analyzing trace with hash -718873418, now seen corresponding path program 7 times [2024-05-12 12:42:06,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:06,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208922409] [2024-05-12 12:42:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:06,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:08,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:08,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208922409] [2024-05-12 12:42:08,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208922409] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:08,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:08,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472219847] [2024-05-12 12:42:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:08,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:09,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:09,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 194 transitions, 2061 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:09,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:09,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:09,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:09,826 INFO L124 PetriNetUnfolderBase]: 1172/2129 cut-off events. [2024-05-12 12:42:09,827 INFO L125 PetriNetUnfolderBase]: For 88386/88389 co-relation queries the response was YES. [2024-05-12 12:42:09,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12935 conditions, 2129 events. 1172/2129 cut-off events. For 88386/88389 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11706 event pairs, 261 based on Foata normal form. 2/2023 useless extension candidates. Maximal degree in co-relation 12818. Up to 1745 conditions per place. [2024-05-12 12:42:09,847 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 185 selfloop transitions, 31 changer transitions 0/223 dead transitions. [2024-05-12 12:42:09,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 223 transitions, 2659 flow [2024-05-12 12:42:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:42:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:42:09,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-05-12 12:42:09,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-05-12 12:42:09,848 INFO L175 Difference]: Start difference. First operand has 229 places, 194 transitions, 2061 flow. Second operand 9 states and 146 transitions. [2024-05-12 12:42:09,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 223 transitions, 2659 flow [2024-05-12 12:42:10,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 223 transitions, 2532 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-05-12 12:42:10,074 INFO L231 Difference]: Finished difference. Result has 229 places, 195 transitions, 2034 flow [2024-05-12 12:42:10,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2034, PETRI_PLACES=229, PETRI_TRANSITIONS=195} [2024-05-12 12:42:10,074 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 185 predicate places. [2024-05-12 12:42:10,074 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 195 transitions, 2034 flow [2024-05-12 12:42:10,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:10,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:10,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:42:10,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 12:42:10,075 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:10,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:10,075 INFO L85 PathProgramCache]: Analyzing trace with hash -718596712, now seen corresponding path program 6 times [2024-05-12 12:42:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081066441] [2024-05-12 12:42:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:10,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:13,264 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 12:42:13,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:13,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081066441] [2024-05-12 12:42:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081066441] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971564172] [2024-05-12 12:42:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:13,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:13,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:13,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 195 transitions, 2034 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:13,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:13,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:13,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:14,355 INFO L124 PetriNetUnfolderBase]: 1198/2169 cut-off events. [2024-05-12 12:42:14,355 INFO L125 PetriNetUnfolderBase]: For 93594/93597 co-relation queries the response was YES. [2024-05-12 12:42:14,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13214 conditions, 2169 events. 1198/2169 cut-off events. For 93594/93597 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11951 event pairs, 261 based on Foata normal form. 2/2060 useless extension candidates. Maximal degree in co-relation 13096. Up to 1709 conditions per place. [2024-05-12 12:42:14,378 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 180 selfloop transitions, 42 changer transitions 0/229 dead transitions. [2024-05-12 12:42:14,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 229 transitions, 2824 flow [2024-05-12 12:42:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:14,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 12:42:14,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-05-12 12:42:14,380 INFO L175 Difference]: Start difference. First operand has 229 places, 195 transitions, 2034 flow. Second operand 10 states and 161 transitions. [2024-05-12 12:42:14,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 229 transitions, 2824 flow [2024-05-12 12:42:14,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 229 transitions, 2744 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 12:42:14,623 INFO L231 Difference]: Finished difference. Result has 232 places, 199 transitions, 2163 flow [2024-05-12 12:42:14,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2163, PETRI_PLACES=232, PETRI_TRANSITIONS=199} [2024-05-12 12:42:14,624 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 188 predicate places. [2024-05-12 12:42:14,624 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 199 transitions, 2163 flow [2024-05-12 12:42:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:14,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:14,624 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 12:42:14,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 12:42:14,624 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:14,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash 348003268, now seen corresponding path program 7 times [2024-05-12 12:42:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788451331] [2024-05-12 12:42:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:14,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788451331] [2024-05-12 12:42:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788451331] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:17,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940978040] [2024-05-12 12:42:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:17,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:18,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 199 transitions, 2163 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:19,084 INFO L124 PetriNetUnfolderBase]: 1224/2209 cut-off events. [2024-05-12 12:42:19,084 INFO L125 PetriNetUnfolderBase]: For 101540/101543 co-relation queries the response was YES. [2024-05-12 12:42:19,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13719 conditions, 2209 events. 1224/2209 cut-off events. For 101540/101543 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12179 event pairs, 247 based on Foata normal form. 2/2098 useless extension candidates. Maximal degree in co-relation 13600. Up to 1686 conditions per place. [2024-05-12 12:42:19,104 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 174 selfloop transitions, 52 changer transitions 0/233 dead transitions. [2024-05-12 12:42:19,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 233 transitions, 2971 flow [2024-05-12 12:42:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 12:42:19,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-05-12 12:42:19,105 INFO L175 Difference]: Start difference. First operand has 232 places, 199 transitions, 2163 flow. Second operand 10 states and 162 transitions. [2024-05-12 12:42:19,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 233 transitions, 2971 flow [2024-05-12 12:42:19,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 233 transitions, 2856 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-05-12 12:42:19,399 INFO L231 Difference]: Finished difference. Result has 236 places, 203 transitions, 2285 flow [2024-05-12 12:42:19,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2285, PETRI_PLACES=236, PETRI_TRANSITIONS=203} [2024-05-12 12:42:19,400 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 192 predicate places. [2024-05-12 12:42:19,400 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 203 transitions, 2285 flow [2024-05-12 12:42:19,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:19,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:19,400 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 12:42:19,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 12:42:19,400 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:19,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -718606012, now seen corresponding path program 8 times [2024-05-12 12:42:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:19,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899598591] [2024-05-12 12:42:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:22,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:22,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899598591] [2024-05-12 12:42:22,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899598591] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:22,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:22,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:42:22,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063414414] [2024-05-12 12:42:22,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:22,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:42:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:22,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:42:22,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:42:22,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:22,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 203 transitions, 2285 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:22,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:22,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:23,483 INFO L124 PetriNetUnfolderBase]: 1235/2226 cut-off events. [2024-05-12 12:42:23,483 INFO L125 PetriNetUnfolderBase]: For 103468/103471 co-relation queries the response was YES. [2024-05-12 12:42:23,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13958 conditions, 2226 events. 1235/2226 cut-off events. For 103468/103471 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12314 event pairs, 266 based on Foata normal form. 2/2114 useless extension candidates. Maximal degree in co-relation 13837. Up to 1804 conditions per place. [2024-05-12 12:42:23,505 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 187 selfloop transitions, 39 changer transitions 0/233 dead transitions. [2024-05-12 12:42:23,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 233 transitions, 2867 flow [2024-05-12 12:42:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 12:42:23,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-05-12 12:42:23,506 INFO L175 Difference]: Start difference. First operand has 236 places, 203 transitions, 2285 flow. Second operand 10 states and 158 transitions. [2024-05-12 12:42:23,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 233 transitions, 2867 flow [2024-05-12 12:42:23,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 233 transitions, 2730 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-05-12 12:42:23,806 INFO L231 Difference]: Finished difference. Result has 240 places, 205 transitions, 2283 flow [2024-05-12 12:42:23,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2283, PETRI_PLACES=240, PETRI_TRANSITIONS=205} [2024-05-12 12:42:23,807 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-05-12 12:42:23,807 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 205 transitions, 2283 flow [2024-05-12 12:42:23,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:23,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:23,807 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 12:42:23,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 12:42:23,807 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:23,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash -718865482, now seen corresponding path program 9 times [2024-05-12 12:42:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:23,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272891233] [2024-05-12 12:42:23,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:26,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272891233] [2024-05-12 12:42:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272891233] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:26,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:26,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:26,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681526885] [2024-05-12 12:42:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:26,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:26,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:26,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 205 transitions, 2283 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:26,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:26,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:26,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:27,835 INFO L124 PetriNetUnfolderBase]: 1246/2243 cut-off events. [2024-05-12 12:42:27,835 INFO L125 PetriNetUnfolderBase]: For 104524/104527 co-relation queries the response was YES. [2024-05-12 12:42:27,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14076 conditions, 2243 events. 1246/2243 cut-off events. For 104524/104527 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12372 event pairs, 268 based on Foata normal form. 2/2130 useless extension candidates. Maximal degree in co-relation 13953. Up to 1857 conditions per place. [2024-05-12 12:42:27,858 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 193 selfloop transitions, 34 changer transitions 0/234 dead transitions. [2024-05-12 12:42:27,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 234 transitions, 2867 flow [2024-05-12 12:42:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 12:42:27,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-05-12 12:42:27,859 INFO L175 Difference]: Start difference. First operand has 240 places, 205 transitions, 2283 flow. Second operand 10 states and 156 transitions. [2024-05-12 12:42:27,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 234 transitions, 2867 flow [2024-05-12 12:42:28,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 234 transitions, 2756 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-05-12 12:42:28,218 INFO L231 Difference]: Finished difference. Result has 242 places, 207 transitions, 2301 flow [2024-05-12 12:42:28,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2301, PETRI_PLACES=242, PETRI_TRANSITIONS=207} [2024-05-12 12:42:28,218 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 198 predicate places. [2024-05-12 12:42:28,218 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 207 transitions, 2301 flow [2024-05-12 12:42:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:28,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:28,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:42:28,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 12:42:28,219 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:28,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:28,220 INFO L85 PathProgramCache]: Analyzing trace with hash 347993968, now seen corresponding path program 10 times [2024-05-12 12:42:28,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:28,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794063729] [2024-05-12 12:42:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:31,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794063729] [2024-05-12 12:42:31,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794063729] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:31,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:31,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:42:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555200309] [2024-05-12 12:42:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:31,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:42:31,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:31,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:42:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:42:31,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:31,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 207 transitions, 2301 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:31,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:31,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:31,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:32,391 INFO L124 PetriNetUnfolderBase]: 1257/2260 cut-off events. [2024-05-12 12:42:32,391 INFO L125 PetriNetUnfolderBase]: For 106817/106820 co-relation queries the response was YES. [2024-05-12 12:42:32,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14162 conditions, 2260 events. 1257/2260 cut-off events. For 106817/106820 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12474 event pairs, 246 based on Foata normal form. 2/2146 useless extension candidates. Maximal degree in co-relation 14038. Up to 1769 conditions per place. [2024-05-12 12:42:32,414 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 181 selfloop transitions, 49 changer transitions 0/237 dead transitions. [2024-05-12 12:42:32,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 237 transitions, 2891 flow [2024-05-12 12:42:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:42:32,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:42:32,415 INFO L175 Difference]: Start difference. First operand has 242 places, 207 transitions, 2301 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:42:32,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 237 transitions, 2891 flow [2024-05-12 12:42:32,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 237 transitions, 2786 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 12:42:32,725 INFO L231 Difference]: Finished difference. Result has 244 places, 209 transitions, 2351 flow [2024-05-12 12:42:32,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2351, PETRI_PLACES=244, PETRI_TRANSITIONS=209} [2024-05-12 12:42:32,725 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 200 predicate places. [2024-05-12 12:42:32,725 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 209 transitions, 2351 flow [2024-05-12 12:42:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:32,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:32,726 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 12:42:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 12:42:32,726 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:32,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 347734498, now seen corresponding path program 11 times [2024-05-12 12:42:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:32,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392921984] [2024-05-12 12:42:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:32,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:35,996 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 12:42:35,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:35,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392921984] [2024-05-12 12:42:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392921984] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:35,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:42:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407439643] [2024-05-12 12:42:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:35,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:42:35,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:42:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:42:36,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:36,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 209 transitions, 2351 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:36,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:36,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:36,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:36,988 INFO L124 PetriNetUnfolderBase]: 1253/2254 cut-off events. [2024-05-12 12:42:36,988 INFO L125 PetriNetUnfolderBase]: For 102969/102972 co-relation queries the response was YES. [2024-05-12 12:42:37,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13998 conditions, 2254 events. 1253/2254 cut-off events. For 102969/102972 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12412 event pairs, 249 based on Foata normal form. 2/2140 useless extension candidates. Maximal degree in co-relation 13873. Up to 1786 conditions per place. [2024-05-12 12:42:37,011 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 182 selfloop transitions, 46 changer transitions 0/235 dead transitions. [2024-05-12 12:42:37,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 235 transitions, 2883 flow [2024-05-12 12:42:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 12:42:37,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-05-12 12:42:37,012 INFO L175 Difference]: Start difference. First operand has 244 places, 209 transitions, 2351 flow. Second operand 10 states and 155 transitions. [2024-05-12 12:42:37,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 235 transitions, 2883 flow [2024-05-12 12:42:37,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 235 transitions, 2718 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-05-12 12:42:37,351 INFO L231 Difference]: Finished difference. Result has 246 places, 209 transitions, 2283 flow [2024-05-12 12:42:37,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2283, PETRI_PLACES=246, PETRI_TRANSITIONS=209} [2024-05-12 12:42:37,351 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 202 predicate places. [2024-05-12 12:42:37,352 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 209 transitions, 2283 flow [2024-05-12 12:42:37,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:37,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:37,352 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 12:42:37,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 12:42:37,352 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:37,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1916705030, now seen corresponding path program 12 times [2024-05-12 12:42:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:37,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123226236] [2024-05-12 12:42:37,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:37,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123226236] [2024-05-12 12:42:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123226236] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:40,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:40,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:40,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721600565] [2024-05-12 12:42:40,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:40,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:40,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:40,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 209 transitions, 2283 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:40,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:40,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:40,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:41,706 INFO L124 PetriNetUnfolderBase]: 1279/2294 cut-off events. [2024-05-12 12:42:41,706 INFO L125 PetriNetUnfolderBase]: For 112257/112260 co-relation queries the response was YES. [2024-05-12 12:42:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14427 conditions, 2294 events. 1279/2294 cut-off events. For 112257/112260 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12655 event pairs, 234 based on Foata normal form. 2/2178 useless extension candidates. Maximal degree in co-relation 14301. Up to 1633 conditions per place. [2024-05-12 12:42:41,729 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 163 selfloop transitions, 73 changer transitions 0/243 dead transitions. [2024-05-12 12:42:41,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 243 transitions, 3129 flow [2024-05-12 12:42:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-05-12 12:42:41,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075 [2024-05-12 12:42:41,730 INFO L175 Difference]: Start difference. First operand has 246 places, 209 transitions, 2283 flow. Second operand 10 states and 163 transitions. [2024-05-12 12:42:41,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 243 transitions, 3129 flow [2024-05-12 12:42:42,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 243 transitions, 3025 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 12:42:42,077 INFO L231 Difference]: Finished difference. Result has 247 places, 213 transitions, 2466 flow [2024-05-12 12:42:42,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2466, PETRI_PLACES=247, PETRI_TRANSITIONS=213} [2024-05-12 12:42:42,078 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 203 predicate places. [2024-05-12 12:42:42,078 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 213 transitions, 2466 flow [2024-05-12 12:42:42,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:42,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:42,078 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 12:42:42,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 12:42:42,079 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:42,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:42,079 INFO L85 PathProgramCache]: Analyzing trace with hash 347726562, now seen corresponding path program 8 times [2024-05-12 12:42:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:42,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703274112] [2024-05-12 12:42:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:44,963 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 12:42:44,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703274112] [2024-05-12 12:42:44,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703274112] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:44,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:44,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:42:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294586813] [2024-05-12 12:42:44,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:44,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:42:44,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:44,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:42:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:42:45,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:45,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 213 transitions, 2466 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:45,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:45,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:45,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:45,986 INFO L124 PetriNetUnfolderBase]: 1299/2337 cut-off events. [2024-05-12 12:42:45,986 INFO L125 PetriNetUnfolderBase]: For 117627/117630 co-relation queries the response was YES. [2024-05-12 12:42:46,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15007 conditions, 2337 events. 1299/2337 cut-off events. For 117627/117630 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13001 event pairs, 257 based on Foata normal form. 2/2219 useless extension candidates. Maximal degree in co-relation 14880. Up to 1864 conditions per place. [2024-05-12 12:42:46,012 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 191 selfloop transitions, 43 changer transitions 0/241 dead transitions. [2024-05-12 12:42:46,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 241 transitions, 3100 flow [2024-05-12 12:42:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:42:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:42:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-05-12 12:42:46,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-05-12 12:42:46,013 INFO L175 Difference]: Start difference. First operand has 247 places, 213 transitions, 2466 flow. Second operand 9 states and 145 transitions. [2024-05-12 12:42:46,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 241 transitions, 3100 flow [2024-05-12 12:42:46,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 241 transitions, 2925 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-05-12 12:42:46,359 INFO L231 Difference]: Finished difference. Result has 250 places, 214 transitions, 2417 flow [2024-05-12 12:42:46,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2417, PETRI_PLACES=250, PETRI_TRANSITIONS=214} [2024-05-12 12:42:46,359 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 206 predicate places. [2024-05-12 12:42:46,360 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 214 transitions, 2417 flow [2024-05-12 12:42:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:46,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:46,360 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 12:42:46,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 12:42:46,360 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:46,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1916714330, now seen corresponding path program 13 times [2024-05-12 12:42:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:46,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100772063] [2024-05-12 12:42:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:49,434 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 12:42:49,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:49,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100772063] [2024-05-12 12:42:49,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100772063] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:49,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:49,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:42:49,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488079677] [2024-05-12 12:42:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:49,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:42:49,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:42:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:42:49,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:49,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 214 transitions, 2417 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:49,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:49,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:49,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:50,698 INFO L124 PetriNetUnfolderBase]: 1325/2375 cut-off events. [2024-05-12 12:42:50,699 INFO L125 PetriNetUnfolderBase]: For 125651/125654 co-relation queries the response was YES. [2024-05-12 12:42:50,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15323 conditions, 2375 events. 1325/2375 cut-off events. For 125651/125654 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13234 event pairs, 246 based on Foata normal form. 4/2252 useless extension candidates. Maximal degree in co-relation 15194. Up to 1258 conditions per place. [2024-05-12 12:42:50,724 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 153 selfloop transitions, 88 changer transitions 0/248 dead transitions. [2024-05-12 12:42:50,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 248 transitions, 3449 flow [2024-05-12 12:42:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:42:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:42:50,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-05-12 12:42:50,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-05-12 12:42:50,725 INFO L175 Difference]: Start difference. First operand has 250 places, 214 transitions, 2417 flow. Second operand 10 states and 167 transitions. [2024-05-12 12:42:50,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 248 transitions, 3449 flow [2024-05-12 12:42:51,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 248 transitions, 3309 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-05-12 12:42:51,104 INFO L231 Difference]: Finished difference. Result has 254 places, 219 transitions, 2619 flow [2024-05-12 12:42:51,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2619, PETRI_PLACES=254, PETRI_TRANSITIONS=219} [2024-05-12 12:42:51,105 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 210 predicate places. [2024-05-12 12:42:51,105 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 219 transitions, 2619 flow [2024-05-12 12:42:51,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:51,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:51,105 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 12:42:51,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 12:42:51,105 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:51,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:51,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1914946844, now seen corresponding path program 2 times [2024-05-12 12:42:51,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:51,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412077499] [2024-05-12 12:42:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:51,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:42:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412077499] [2024-05-12 12:42:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412077499] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:54,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:54,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:42:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393854084] [2024-05-12 12:42:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:54,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:42:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:42:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:42:54,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:54,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 219 transitions, 2619 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:54,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:54,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:54,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:55,557 INFO L124 PetriNetUnfolderBase]: 1357/2434 cut-off events. [2024-05-12 12:42:55,557 INFO L125 PetriNetUnfolderBase]: For 132481/132484 co-relation queries the response was YES. [2024-05-12 12:42:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15914 conditions, 2434 events. 1357/2434 cut-off events. For 132481/132484 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13677 event pairs, 325 based on Foata normal form. 4/2312 useless extension candidates. Maximal degree in co-relation 15783. Up to 2061 conditions per place. [2024-05-12 12:42:55,580 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 211 selfloop transitions, 34 changer transitions 0/252 dead transitions. [2024-05-12 12:42:55,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 252 transitions, 3319 flow [2024-05-12 12:42:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:42:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:42:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-05-12 12:42:55,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 12:42:55,582 INFO L175 Difference]: Start difference. First operand has 254 places, 219 transitions, 2619 flow. Second operand 11 states and 165 transitions. [2024-05-12 12:42:55,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 252 transitions, 3319 flow [2024-05-12 12:42:55,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 252 transitions, 3076 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-05-12 12:42:55,925 INFO L231 Difference]: Finished difference. Result has 258 places, 221 transitions, 2545 flow [2024-05-12 12:42:55,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2545, PETRI_PLACES=258, PETRI_TRANSITIONS=221} [2024-05-12 12:42:55,925 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2024-05-12 12:42:55,925 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 221 transitions, 2545 flow [2024-05-12 12:42:55,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:55,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:55,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:42:55,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 12:42:55,926 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:55,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash -726225068, now seen corresponding path program 9 times [2024-05-12 12:42:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:55,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961236028] [2024-05-12 12:42:55,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:42:58,422 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 12:42:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:42:58,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961236028] [2024-05-12 12:42:58,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961236028] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:42:58,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:42:58,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:42:58,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252813301] [2024-05-12 12:42:58,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:42:58,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:42:58,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:42:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:42:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:42:58,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:42:58,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 221 transitions, 2545 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:58,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:42:58,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:42:58,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:42:59,342 INFO L124 PetriNetUnfolderBase]: 1377/2475 cut-off events. [2024-05-12 12:42:59,342 INFO L125 PetriNetUnfolderBase]: For 128163/128166 co-relation queries the response was YES. [2024-05-12 12:42:59,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15984 conditions, 2475 events. 1377/2475 cut-off events. For 128163/128166 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13964 event pairs, 313 based on Foata normal form. 2/2347 useless extension candidates. Maximal degree in co-relation 15853. Up to 2099 conditions per place. [2024-05-12 12:42:59,368 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 213 selfloop transitions, 28 changer transitions 0/248 dead transitions. [2024-05-12 12:42:59,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 248 transitions, 3193 flow [2024-05-12 12:42:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:42:59,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:42:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-05-12 12:42:59,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-05-12 12:42:59,369 INFO L175 Difference]: Start difference. First operand has 258 places, 221 transitions, 2545 flow. Second operand 9 states and 142 transitions. [2024-05-12 12:42:59,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 248 transitions, 3193 flow [2024-05-12 12:42:59,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 248 transitions, 3040 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-05-12 12:42:59,763 INFO L231 Difference]: Finished difference. Result has 258 places, 222 transitions, 2490 flow [2024-05-12 12:42:59,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2490, PETRI_PLACES=258, PETRI_TRANSITIONS=222} [2024-05-12 12:42:59,763 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 214 predicate places. [2024-05-12 12:42:59,763 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 222 transitions, 2490 flow [2024-05-12 12:42:59,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:42:59,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:42:59,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:42:59,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 12:42:59,764 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:42:59,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:42:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash -459979708, now seen corresponding path program 3 times [2024-05-12 12:42:59,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:42:59,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728937313] [2024-05-12 12:42:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:42:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:42:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:03,229 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 12:43:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728937313] [2024-05-12 12:43:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728937313] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69448684] [2024-05-12 12:43:03,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:03,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:03,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 222 transitions, 2490 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:03,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:03,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:04,356 INFO L124 PetriNetUnfolderBase]: 1409/2534 cut-off events. [2024-05-12 12:43:04,356 INFO L125 PetriNetUnfolderBase]: For 138133/138136 co-relation queries the response was YES. [2024-05-12 12:43:04,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16226 conditions, 2534 events. 1409/2534 cut-off events. For 138133/138136 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14412 event pairs, 360 based on Foata normal form. 4/2408 useless extension candidates. Maximal degree in co-relation 16094. Up to 2186 conditions per place. [2024-05-12 12:43:04,384 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 221 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-05-12 12:43:04,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 255 transitions, 3200 flow [2024-05-12 12:43:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:43:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:43:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-05-12 12:43:04,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-05-12 12:43:04,385 INFO L175 Difference]: Start difference. First operand has 258 places, 222 transitions, 2490 flow. Second operand 11 states and 164 transitions. [2024-05-12 12:43:04,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 255 transitions, 3200 flow [2024-05-12 12:43:04,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 255 transitions, 3122 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 12:43:04,819 INFO L231 Difference]: Finished difference. Result has 262 places, 224 transitions, 2571 flow [2024-05-12 12:43:04,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2571, PETRI_PLACES=262, PETRI_TRANSITIONS=224} [2024-05-12 12:43:04,819 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 218 predicate places. [2024-05-12 12:43:04,819 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 224 transitions, 2571 flow [2024-05-12 12:43:04,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:04,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:04,819 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 12:43:04,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 12:43:04,819 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:04,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:04,820 INFO L85 PathProgramCache]: Analyzing trace with hash -726230648, now seen corresponding path program 10 times [2024-05-12 12:43:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251497025] [2024-05-12 12:43:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:07,226 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 12:43:07,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:07,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251497025] [2024-05-12 12:43:07,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251497025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:07,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:07,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:43:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892153034] [2024-05-12 12:43:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:43:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:43:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:43:07,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:07,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 224 transitions, 2571 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:07,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:07,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:07,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:08,240 INFO L124 PetriNetUnfolderBase]: 1413/2547 cut-off events. [2024-05-12 12:43:08,240 INFO L125 PetriNetUnfolderBase]: For 127481/127484 co-relation queries the response was YES. [2024-05-12 12:43:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16093 conditions, 2547 events. 1413/2547 cut-off events. For 127481/127484 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14536 event pairs, 308 based on Foata normal form. 2/2415 useless extension candidates. Maximal degree in co-relation 15960. Up to 2155 conditions per place. [2024-05-12 12:43:08,268 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 219 selfloop transitions, 28 changer transitions 0/254 dead transitions. [2024-05-12 12:43:08,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 254 transitions, 3257 flow [2024-05-12 12:43:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 12:43:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 12:43:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-05-12 12:43:08,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-05-12 12:43:08,269 INFO L175 Difference]: Start difference. First operand has 262 places, 224 transitions, 2571 flow. Second operand 9 states and 143 transitions. [2024-05-12 12:43:08,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 254 transitions, 3257 flow [2024-05-12 12:43:08,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 254 transitions, 3114 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-05-12 12:43:08,696 INFO L231 Difference]: Finished difference. Result has 263 places, 227 transitions, 2551 flow [2024-05-12 12:43:08,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2551, PETRI_PLACES=263, PETRI_TRANSITIONS=227} [2024-05-12 12:43:08,696 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2024-05-12 12:43:08,696 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 227 transitions, 2551 flow [2024-05-12 12:43:08,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:08,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:08,697 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 12:43:08,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 12:43:08,697 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:08,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:08,697 INFO L85 PathProgramCache]: Analyzing trace with hash -726015322, now seen corresponding path program 14 times [2024-05-12 12:43:08,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223943967] [2024-05-12 12:43:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:11,911 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 12:43:11,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:11,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223943967] [2024-05-12 12:43:11,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223943967] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:11,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:11,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:43:11,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589202059] [2024-05-12 12:43:11,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:11,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:43:11,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:43:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:43:12,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:12,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 227 transitions, 2551 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:12,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:12,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:12,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:12,876 INFO L124 PetriNetUnfolderBase]: 1409/2541 cut-off events. [2024-05-12 12:43:12,876 INFO L125 PetriNetUnfolderBase]: For 118836/118839 co-relation queries the response was YES. [2024-05-12 12:43:12,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15647 conditions, 2541 events. 1409/2541 cut-off events. For 118836/118839 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14493 event pairs, 319 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 15512. Up to 2155 conditions per place. [2024-05-12 12:43:12,901 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 214 selfloop transitions, 31 changer transitions 0/252 dead transitions. [2024-05-12 12:43:12,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 252 transitions, 3113 flow [2024-05-12 12:43:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:43:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:43:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-05-12 12:43:12,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-05-12 12:43:12,903 INFO L175 Difference]: Start difference. First operand has 263 places, 227 transitions, 2551 flow. Second operand 10 states and 152 transitions. [2024-05-12 12:43:12,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 252 transitions, 3113 flow [2024-05-12 12:43:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 252 transitions, 2992 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-05-12 12:43:13,319 INFO L231 Difference]: Finished difference. Result has 267 places, 227 transitions, 2497 flow [2024-05-12 12:43:13,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2497, PETRI_PLACES=267, PETRI_TRANSITIONS=227} [2024-05-12 12:43:13,320 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 223 predicate places. [2024-05-12 12:43:13,320 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 227 transitions, 2497 flow [2024-05-12 12:43:13,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:13,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:13,320 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 12:43:13,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 12:43:13,320 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:13,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:13,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1916375996, now seen corresponding path program 4 times [2024-05-12 12:43:13,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:13,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492543453] [2024-05-12 12:43:13,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:13,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:16,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:16,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:16,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492543453] [2024-05-12 12:43:16,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492543453] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:16,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:16,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:16,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479538857] [2024-05-12 12:43:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:16,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:16,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 227 transitions, 2497 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:16,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:16,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:16,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:17,680 INFO L124 PetriNetUnfolderBase]: 1441/2600 cut-off events. [2024-05-12 12:43:17,680 INFO L125 PetriNetUnfolderBase]: For 130244/130247 co-relation queries the response was YES. [2024-05-12 12:43:17,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15955 conditions, 2600 events. 1441/2600 cut-off events. For 130244/130247 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14963 event pairs, 338 based on Foata normal form. 4/2470 useless extension candidates. Maximal degree in co-relation 15819. Up to 2165 conditions per place. [2024-05-12 12:43:17,706 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 210 selfloop transitions, 43 changer transitions 0/260 dead transitions. [2024-05-12 12:43:17,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 260 transitions, 3223 flow [2024-05-12 12:43:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:43:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:43:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-05-12 12:43:17,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2024-05-12 12:43:17,707 INFO L175 Difference]: Start difference. First operand has 267 places, 227 transitions, 2497 flow. Second operand 11 states and 166 transitions. [2024-05-12 12:43:17,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 260 transitions, 3223 flow [2024-05-12 12:43:18,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 260 transitions, 3142 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-05-12 12:43:18,160 INFO L231 Difference]: Finished difference. Result has 269 places, 229 transitions, 2611 flow [2024-05-12 12:43:18,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2611, PETRI_PLACES=269, PETRI_TRANSITIONS=229} [2024-05-12 12:43:18,161 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 225 predicate places. [2024-05-12 12:43:18,161 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 229 transitions, 2611 flow [2024-05-12 12:43:18,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:18,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:18,161 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 12:43:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 12:43:18,161 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:18,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1545103256, now seen corresponding path program 5 times [2024-05-12 12:43:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550155333] [2024-05-12 12:43:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:21,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550155333] [2024-05-12 12:43:21,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550155333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:21,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:21,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:21,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140825852] [2024-05-12 12:43:21,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:21,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:21,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:21,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 229 transitions, 2611 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:21,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:21,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:21,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:22,423 INFO L124 PetriNetUnfolderBase]: 1473/2655 cut-off events. [2024-05-12 12:43:22,423 INFO L125 PetriNetUnfolderBase]: For 139209/139209 co-relation queries the response was YES. [2024-05-12 12:43:22,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16618 conditions, 2655 events. 1473/2655 cut-off events. For 139209/139209 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15373 event pairs, 438 based on Foata normal form. 4/2527 useless extension candidates. Maximal degree in co-relation 16481. Up to 2362 conditions per place. [2024-05-12 12:43:22,455 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 230 selfloop transitions, 22 changer transitions 0/259 dead transitions. [2024-05-12 12:43:22,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 259 transitions, 3321 flow [2024-05-12 12:43:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:43:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:43:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 171 transitions. [2024-05-12 12:43:22,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-05-12 12:43:22,456 INFO L175 Difference]: Start difference. First operand has 269 places, 229 transitions, 2611 flow. Second operand 12 states and 171 transitions. [2024-05-12 12:43:22,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 259 transitions, 3321 flow [2024-05-12 12:43:22,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 259 transitions, 3142 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-05-12 12:43:22,959 INFO L231 Difference]: Finished difference. Result has 272 places, 231 transitions, 2589 flow [2024-05-12 12:43:22,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2589, PETRI_PLACES=272, PETRI_TRANSITIONS=231} [2024-05-12 12:43:22,960 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-05-12 12:43:22,960 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 231 transitions, 2589 flow [2024-05-12 12:43:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:22,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:22,960 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 12:43:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 12:43:22,960 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:22,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1532145566, now seen corresponding path program 6 times [2024-05-12 12:43:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513970875] [2024-05-12 12:43:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:25,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:25,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513970875] [2024-05-12 12:43:26,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513970875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:26,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:26,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:26,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795063279] [2024-05-12 12:43:26,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:26,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:26,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:26,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 231 transitions, 2589 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:26,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:26,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:26,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:27,036 INFO L124 PetriNetUnfolderBase]: 1524/2746 cut-off events. [2024-05-12 12:43:27,036 INFO L125 PetriNetUnfolderBase]: For 156347/156347 co-relation queries the response was YES. [2024-05-12 12:43:27,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17524 conditions, 2746 events. 1524/2746 cut-off events. For 156347/156347 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16055 event pairs, 431 based on Foata normal form. 4/2625 useless extension candidates. Maximal degree in co-relation 17386. Up to 2325 conditions per place. [2024-05-12 12:43:27,066 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 232 selfloop transitions, 26 changer transitions 0/265 dead transitions. [2024-05-12 12:43:27,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 265 transitions, 3615 flow [2024-05-12 12:43:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:43:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:43:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-05-12 12:43:27,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 12:43:27,068 INFO L175 Difference]: Start difference. First operand has 272 places, 231 transitions, 2589 flow. Second operand 11 states and 165 transitions. [2024-05-12 12:43:27,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 265 transitions, 3615 flow [2024-05-12 12:43:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 265 transitions, 3474 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-05-12 12:43:27,567 INFO L231 Difference]: Finished difference. Result has 273 places, 235 transitions, 2725 flow [2024-05-12 12:43:27,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2725, PETRI_PLACES=273, PETRI_TRANSITIONS=235} [2024-05-12 12:43:27,567 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 229 predicate places. [2024-05-12 12:43:27,567 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 235 transitions, 2725 flow [2024-05-12 12:43:27,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:27,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:27,567 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 12:43:27,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 12:43:27,568 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:27,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1545478046, now seen corresponding path program 7 times [2024-05-12 12:43:27,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:27,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578963893] [2024-05-12 12:43:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:27,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578963893] [2024-05-12 12:43:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578963893] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:30,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:30,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:30,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035874315] [2024-05-12 12:43:30,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:30,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:30,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:30,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:30,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 235 transitions, 2725 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:30,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:30,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:30,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:31,841 INFO L124 PetriNetUnfolderBase]: 1518/2736 cut-off events. [2024-05-12 12:43:31,841 INFO L125 PetriNetUnfolderBase]: For 140275/140275 co-relation queries the response was YES. [2024-05-12 12:43:31,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16837 conditions, 2736 events. 1518/2736 cut-off events. For 140275/140275 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15990 event pairs, 451 based on Foata normal form. 4/2608 useless extension candidates. Maximal degree in co-relation 16698. Up to 2393 conditions per place. [2024-05-12 12:43:31,866 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 230 selfloop transitions, 23 changer transitions 0/260 dead transitions. [2024-05-12 12:43:31,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 260 transitions, 3323 flow [2024-05-12 12:43:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:43:31,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:43:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-05-12 12:43:31,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613636363636364 [2024-05-12 12:43:31,867 INFO L175 Difference]: Start difference. First operand has 273 places, 235 transitions, 2725 flow. Second operand 11 states and 159 transitions. [2024-05-12 12:43:31,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 260 transitions, 3323 flow [2024-05-12 12:43:32,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 260 transitions, 3096 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-05-12 12:43:32,340 INFO L231 Difference]: Finished difference. Result has 277 places, 235 transitions, 2552 flow [2024-05-12 12:43:32,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2552, PETRI_PLACES=277, PETRI_TRANSITIONS=235} [2024-05-12 12:43:32,340 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2024-05-12 12:43:32,340 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 235 transitions, 2552 flow [2024-05-12 12:43:32,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:32,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:32,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:43:32,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 12:43:32,341 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:32,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1726239992, now seen corresponding path program 15 times [2024-05-12 12:43:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:32,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757668307] [2024-05-12 12:43:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:35,143 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 12:43:35,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:35,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757668307] [2024-05-12 12:43:35,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757668307] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:35,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:35,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:43:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415738917] [2024-05-12 12:43:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:35,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:43:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:43:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:43:35,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:35,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 235 transitions, 2552 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:35,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:35,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:35,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:36,296 INFO L124 PetriNetUnfolderBase]: 1510/2725 cut-off events. [2024-05-12 12:43:36,296 INFO L125 PetriNetUnfolderBase]: For 114961/114964 co-relation queries the response was YES. [2024-05-12 12:43:36,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15699 conditions, 2725 events. 1510/2725 cut-off events. For 114961/114964 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15929 event pairs, 281 based on Foata normal form. 4/2589 useless extension candidates. Maximal degree in co-relation 15558. Up to 1600 conditions per place. [2024-05-12 12:43:36,329 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 157 selfloop transitions, 100 changer transitions 0/264 dead transitions. [2024-05-12 12:43:36,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 264 transitions, 3330 flow [2024-05-12 12:43:36,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:43:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:43:36,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 12:43:36,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-05-12 12:43:36,330 INFO L175 Difference]: Start difference. First operand has 277 places, 235 transitions, 2552 flow. Second operand 10 states and 165 transitions. [2024-05-12 12:43:36,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 264 transitions, 3330 flow [2024-05-12 12:43:36,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 264 transitions, 3235 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-05-12 12:43:36,833 INFO L231 Difference]: Finished difference. Result has 277 places, 235 transitions, 2664 flow [2024-05-12 12:43:36,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2664, PETRI_PLACES=277, PETRI_TRANSITIONS=235} [2024-05-12 12:43:36,833 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2024-05-12 12:43:36,833 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 235 transitions, 2664 flow [2024-05-12 12:43:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:36,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:36,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:43:36,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 12:43:36,834 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:36,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash -201820324, now seen corresponding path program 1 times [2024-05-12 12:43:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103540317] [2024-05-12 12:43:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:39,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:39,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:39,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103540317] [2024-05-12 12:43:39,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103540317] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:39,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:39,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:39,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267607583] [2024-05-12 12:43:39,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:39,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:39,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:39,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:39,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 235 transitions, 2664 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:39,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:39,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:40,802 INFO L124 PetriNetUnfolderBase]: 1530/2756 cut-off events. [2024-05-12 12:43:40,802 INFO L125 PetriNetUnfolderBase]: For 109569/109569 co-relation queries the response was YES. [2024-05-12 12:43:40,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16245 conditions, 2756 events. 1530/2756 cut-off events. For 109569/109569 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 16114 event pairs, 332 based on Foata normal form. 2/2633 useless extension candidates. Maximal degree in co-relation 16103. Up to 2324 conditions per place. [2024-05-12 12:43:40,831 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 242 selfloop transitions, 25 changer transitions 0/274 dead transitions. [2024-05-12 12:43:40,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 274 transitions, 3468 flow [2024-05-12 12:43:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:43:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:43:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:43:40,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:43:40,832 INFO L175 Difference]: Start difference. First operand has 277 places, 235 transitions, 2664 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:43:40,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 274 transitions, 3468 flow [2024-05-12 12:43:41,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 274 transitions, 3298 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 12:43:41,340 INFO L231 Difference]: Finished difference. Result has 279 places, 236 transitions, 2570 flow [2024-05-12 12:43:41,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2494, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2570, PETRI_PLACES=279, PETRI_TRANSITIONS=236} [2024-05-12 12:43:41,340 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 235 predicate places. [2024-05-12 12:43:41,340 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 236 transitions, 2570 flow [2024-05-12 12:43:41,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:41,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:41,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:43:41,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 12:43:41,341 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:41,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:41,341 INFO L85 PathProgramCache]: Analyzing trace with hash -80173434, now seen corresponding path program 2 times [2024-05-12 12:43:41,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:41,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021642001] [2024-05-12 12:43:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:41,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021642001] [2024-05-12 12:43:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021642001] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:44,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:44,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801587223] [2024-05-12 12:43:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:44,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:44,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:44,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:44,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:44,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:44,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 236 transitions, 2570 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:44,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:44,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:44,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:45,578 INFO L124 PetriNetUnfolderBase]: 1550/2804 cut-off events. [2024-05-12 12:43:45,578 INFO L125 PetriNetUnfolderBase]: For 112342/112342 co-relation queries the response was YES. [2024-05-12 12:43:45,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16329 conditions, 2804 events. 1550/2804 cut-off events. For 112342/112342 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16560 event pairs, 448 based on Foata normal form. 2/2668 useless extension candidates. Maximal degree in co-relation 16186. Up to 2454 conditions per place. [2024-05-12 12:43:45,604 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 239 selfloop transitions, 23 changer transitions 0/269 dead transitions. [2024-05-12 12:43:45,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 269 transitions, 3278 flow [2024-05-12 12:43:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:43:45,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:43:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 12:43:45,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-05-12 12:43:45,605 INFO L175 Difference]: Start difference. First operand has 279 places, 236 transitions, 2570 flow. Second operand 10 states and 154 transitions. [2024-05-12 12:43:45,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 269 transitions, 3278 flow [2024-05-12 12:43:46,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 3216 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 12:43:46,081 INFO L231 Difference]: Finished difference. Result has 281 places, 237 transitions, 2582 flow [2024-05-12 12:43:46,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2582, PETRI_PLACES=281, PETRI_TRANSITIONS=237} [2024-05-12 12:43:46,081 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 237 predicate places. [2024-05-12 12:43:46,082 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 237 transitions, 2582 flow [2024-05-12 12:43:46,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:46,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:46,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:43:46,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 12:43:46,082 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:46,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:46,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1638163762, now seen corresponding path program 3 times [2024-05-12 12:43:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:46,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452841193] [2024-05-12 12:43:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:49,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:49,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452841193] [2024-05-12 12:43:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452841193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:49,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:49,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:43:49,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293428844] [2024-05-12 12:43:49,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:49,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:43:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:43:49,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:43:49,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:49,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 237 transitions, 2582 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:49,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:49,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:49,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:50,673 INFO L124 PetriNetUnfolderBase]: 1566/2832 cut-off events. [2024-05-12 12:43:50,673 INFO L125 PetriNetUnfolderBase]: For 115047/115047 co-relation queries the response was YES. [2024-05-12 12:43:50,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16510 conditions, 2832 events. 1566/2832 cut-off events. For 115047/115047 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16750 event pairs, 447 based on Foata normal form. 2/2696 useless extension candidates. Maximal degree in co-relation 16366. Up to 2475 conditions per place. [2024-05-12 12:43:50,701 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 242 selfloop transitions, 24 changer transitions 0/273 dead transitions. [2024-05-12 12:43:50,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 3382 flow [2024-05-12 12:43:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:43:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:43:50,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 12:43:50,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-05-12 12:43:50,702 INFO L175 Difference]: Start difference. First operand has 281 places, 237 transitions, 2582 flow. Second operand 10 states and 155 transitions. [2024-05-12 12:43:50,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 3382 flow [2024-05-12 12:43:51,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3322 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 12:43:51,206 INFO L231 Difference]: Finished difference. Result has 284 places, 241 transitions, 2726 flow [2024-05-12 12:43:51,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2726, PETRI_PLACES=284, PETRI_TRANSITIONS=241} [2024-05-12 12:43:51,206 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 240 predicate places. [2024-05-12 12:43:51,206 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 241 transitions, 2726 flow [2024-05-12 12:43:51,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:51,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:51,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:43:51,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 12:43:51,207 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:51,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:51,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1637990782, now seen corresponding path program 4 times [2024-05-12 12:43:51,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:51,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296613821] [2024-05-12 12:43:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:43:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:54,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296613821] [2024-05-12 12:43:54,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296613821] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:54,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:54,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:43:54,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470681239] [2024-05-12 12:43:54,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:54,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:43:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:43:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:43:54,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:54,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 241 transitions, 2726 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:54,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:54,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:43:55,493 INFO L124 PetriNetUnfolderBase]: 1586/2869 cut-off events. [2024-05-12 12:43:55,494 INFO L125 PetriNetUnfolderBase]: For 119926/119926 co-relation queries the response was YES. [2024-05-12 12:43:55,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16838 conditions, 2869 events. 1586/2869 cut-off events. For 119926/119926 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17070 event pairs, 441 based on Foata normal form. 2/2732 useless extension candidates. Maximal degree in co-relation 16692. Up to 2487 conditions per place. [2024-05-12 12:43:55,528 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 250 selfloop transitions, 22 changer transitions 0/279 dead transitions. [2024-05-12 12:43:55,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3544 flow [2024-05-12 12:43:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:43:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:43:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 12:43:55,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-05-12 12:43:55,529 INFO L175 Difference]: Start difference. First operand has 284 places, 241 transitions, 2726 flow. Second operand 10 states and 158 transitions. [2024-05-12 12:43:55,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3544 flow [2024-05-12 12:43:56,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 279 transitions, 3384 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-05-12 12:43:56,116 INFO L231 Difference]: Finished difference. Result has 288 places, 242 transitions, 2642 flow [2024-05-12 12:43:56,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2642, PETRI_PLACES=288, PETRI_TRANSITIONS=242} [2024-05-12 12:43:56,117 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 244 predicate places. [2024-05-12 12:43:56,117 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 242 transitions, 2642 flow [2024-05-12 12:43:56,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:56,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:43:56,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:43:56,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 12:43:56,117 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:43:56,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:43:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 64850394, now seen corresponding path program 1 times [2024-05-12 12:43:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:43:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272649875] [2024-05-12 12:43:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:43:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:43:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:43:59,753 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 12:43:59,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:43:59,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272649875] [2024-05-12 12:43:59,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272649875] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:43:59,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:43:59,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:43:59,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328990107] [2024-05-12 12:43:59,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:43:59,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:43:59,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:43:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:43:59,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:43:59,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:43:59,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 242 transitions, 2642 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:43:59,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:43:59,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:43:59,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:00,955 INFO L124 PetriNetUnfolderBase]: 1599/2894 cut-off events. [2024-05-12 12:44:00,955 INFO L125 PetriNetUnfolderBase]: For 121199/121199 co-relation queries the response was YES. [2024-05-12 12:44:00,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16874 conditions, 2894 events. 1599/2894 cut-off events. For 121199/121199 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17225 event pairs, 470 based on Foata normal form. 2/2751 useless extension candidates. Maximal degree in co-relation 16726. Up to 2535 conditions per place. [2024-05-12 12:44:00,991 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 242 selfloop transitions, 26 changer transitions 0/275 dead transitions. [2024-05-12 12:44:00,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 275 transitions, 3326 flow [2024-05-12 12:44:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:44:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:44:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-05-12 12:44:00,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-05-12 12:44:00,992 INFO L175 Difference]: Start difference. First operand has 288 places, 242 transitions, 2642 flow. Second operand 11 states and 164 transitions. [2024-05-12 12:44:00,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 275 transitions, 3326 flow [2024-05-12 12:44:01,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 275 transitions, 3258 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 12:44:01,626 INFO L231 Difference]: Finished difference. Result has 291 places, 244 transitions, 2689 flow [2024-05-12 12:44:01,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=291, PETRI_TRANSITIONS=244} [2024-05-12 12:44:01,626 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 247 predicate places. [2024-05-12 12:44:01,627 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 244 transitions, 2689 flow [2024-05-12 12:44:01,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:01,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:01,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 12:44:01,627 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:01,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -292385526, now seen corresponding path program 5 times [2024-05-12 12:44:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:01,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350768112] [2024-05-12 12:44:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:44:05,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:05,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350768112] [2024-05-12 12:44:05,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350768112] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:05,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530491214] [2024-05-12 12:44:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:05,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:05,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:05,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:05,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 244 transitions, 2689 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:05,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:05,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:05,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:06,497 INFO L124 PetriNetUnfolderBase]: 1619/2936 cut-off events. [2024-05-12 12:44:06,497 INFO L125 PetriNetUnfolderBase]: For 124019/124019 co-relation queries the response was YES. [2024-05-12 12:44:06,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17121 conditions, 2936 events. 1619/2936 cut-off events. For 124019/124019 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17562 event pairs, 436 based on Foata normal form. 2/2791 useless extension candidates. Maximal degree in co-relation 16972. Up to 2438 conditions per place. [2024-05-12 12:44:06,532 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 229 selfloop transitions, 41 changer transitions 0/277 dead transitions. [2024-05-12 12:44:06,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 277 transitions, 3417 flow [2024-05-12 12:44:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:44:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:44:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:44:06,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:44:06,533 INFO L175 Difference]: Start difference. First operand has 291 places, 244 transitions, 2689 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:44:06,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 277 transitions, 3417 flow [2024-05-12 12:44:07,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 277 transitions, 3328 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-05-12 12:44:07,094 INFO L231 Difference]: Finished difference. Result has 292 places, 245 transitions, 2716 flow [2024-05-12 12:44:07,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2600, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2716, PETRI_PLACES=292, PETRI_TRANSITIONS=245} [2024-05-12 12:44:07,094 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 248 predicate places. [2024-05-12 12:44:07,094 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 245 transitions, 2716 flow [2024-05-12 12:44:07,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:07,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:07,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:07,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 12:44:07,095 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:07,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash -292088298, now seen corresponding path program 2 times [2024-05-12 12:44:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045002496] [2024-05-12 12:44:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:11,968 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 12:44:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045002496] [2024-05-12 12:44:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045002496] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:11,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022110066] [2024-05-12 12:44:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:11,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:12,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:12,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 245 transitions, 2716 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:12,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:12,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:12,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:13,596 INFO L124 PetriNetUnfolderBase]: 1632/2955 cut-off events. [2024-05-12 12:44:13,596 INFO L125 PetriNetUnfolderBase]: For 127444/127444 co-relation queries the response was YES. [2024-05-12 12:44:13,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17333 conditions, 2955 events. 1632/2955 cut-off events. For 127444/127444 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17699 event pairs, 432 based on Foata normal form. 2/2806 useless extension candidates. Maximal degree in co-relation 17183. Up to 2385 conditions per place. [2024-05-12 12:44:13,631 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 218 selfloop transitions, 54 changer transitions 0/279 dead transitions. [2024-05-12 12:44:13,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 279 transitions, 3412 flow [2024-05-12 12:44:13,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:44:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:44:13,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 12:44:13,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636 [2024-05-12 12:44:13,633 INFO L175 Difference]: Start difference. First operand has 292 places, 245 transitions, 2716 flow. Second operand 11 states and 171 transitions. [2024-05-12 12:44:13,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 279 transitions, 3412 flow [2024-05-12 12:44:14,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 279 transitions, 3310 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 12:44:14,262 INFO L231 Difference]: Finished difference. Result has 295 places, 247 transitions, 2789 flow [2024-05-12 12:44:14,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2789, PETRI_PLACES=295, PETRI_TRANSITIONS=247} [2024-05-12 12:44:14,263 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 251 predicate places. [2024-05-12 12:44:14,263 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 247 transitions, 2789 flow [2024-05-12 12:44:14,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:14,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:14,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 12:44:14,263 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:14,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 42893920, now seen corresponding path program 6 times [2024-05-12 12:44:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892004525] [2024-05-12 12:44:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:14,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:17,356 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 12:44:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892004525] [2024-05-12 12:44:17,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892004525] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:17,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:17,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:17,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727341422] [2024-05-12 12:44:17,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:17,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:17,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:17,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:17,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 247 transitions, 2789 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:17,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:17,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:17,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:18,679 INFO L124 PetriNetUnfolderBase]: 1652/2997 cut-off events. [2024-05-12 12:44:18,679 INFO L125 PetriNetUnfolderBase]: For 130342/130342 co-relation queries the response was YES. [2024-05-12 12:44:18,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17636 conditions, 2997 events. 1652/2997 cut-off events. For 130342/130342 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18031 event pairs, 454 based on Foata normal form. 2/2847 useless extension candidates. Maximal degree in co-relation 17485. Up to 2594 conditions per place. [2024-05-12 12:44:18,715 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 244 selfloop transitions, 27 changer transitions 0/278 dead transitions. [2024-05-12 12:44:18,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 278 transitions, 3513 flow [2024-05-12 12:44:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:44:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:44:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-05-12 12:44:18,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-05-12 12:44:18,718 INFO L175 Difference]: Start difference. First operand has 295 places, 247 transitions, 2789 flow. Second operand 10 states and 155 transitions. [2024-05-12 12:44:18,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 278 transitions, 3513 flow [2024-05-12 12:44:19,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 278 transitions, 3364 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-05-12 12:44:19,293 INFO L231 Difference]: Finished difference. Result has 296 places, 248 transitions, 2730 flow [2024-05-12 12:44:19,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2730, PETRI_PLACES=296, PETRI_TRANSITIONS=248} [2024-05-12 12:44:19,294 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 252 predicate places. [2024-05-12 12:44:19,294 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 248 transitions, 2730 flow [2024-05-12 12:44:19,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:19,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:19,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:19,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 12:44:19,294 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:19,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash 397303930, now seen corresponding path program 7 times [2024-05-12 12:44:19,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:19,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635593109] [2024-05-12 12:44:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:19,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:44:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:22,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635593109] [2024-05-12 12:44:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635593109] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:22,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:22,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223395599] [2024-05-12 12:44:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:22,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:22,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 248 transitions, 2730 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:22,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:22,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:22,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:23,533 INFO L124 PetriNetUnfolderBase]: 1676/3053 cut-off events. [2024-05-12 12:44:23,533 INFO L125 PetriNetUnfolderBase]: For 134731/134731 co-relation queries the response was YES. [2024-05-12 12:44:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17944 conditions, 3053 events. 1676/3053 cut-off events. For 134731/134731 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18543 event pairs, 456 based on Foata normal form. 2/2899 useless extension candidates. Maximal degree in co-relation 17792. Up to 2615 conditions per place. [2024-05-12 12:44:23,572 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 249 selfloop transitions, 27 changer transitions 0/283 dead transitions. [2024-05-12 12:44:23,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 283 transitions, 3528 flow [2024-05-12 12:44:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:44:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:44:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 12:44:23,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-05-12 12:44:23,573 INFO L175 Difference]: Start difference. First operand has 296 places, 248 transitions, 2730 flow. Second operand 10 states and 158 transitions. [2024-05-12 12:44:23,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 283 transitions, 3528 flow [2024-05-12 12:44:24,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 283 transitions, 3452 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 12:44:24,157 INFO L231 Difference]: Finished difference. Result has 299 places, 250 transitions, 2792 flow [2024-05-12 12:44:24,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2792, PETRI_PLACES=299, PETRI_TRANSITIONS=250} [2024-05-12 12:44:24,158 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 255 predicate places. [2024-05-12 12:44:24,158 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 250 transitions, 2792 flow [2024-05-12 12:44:24,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:24,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:24,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:24,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 12:44:24,159 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:24,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:24,159 INFO L85 PathProgramCache]: Analyzing trace with hash 42714430, now seen corresponding path program 8 times [2024-05-12 12:44:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544025333] [2024-05-12 12:44:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:27,048 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 12:44:27,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:27,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544025333] [2024-05-12 12:44:27,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544025333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:27,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:27,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:27,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956583026] [2024-05-12 12:44:27,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:27,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:27,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:27,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:27,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 250 transitions, 2792 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:27,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:27,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:27,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:28,412 INFO L124 PetriNetUnfolderBase]: 1700/3110 cut-off events. [2024-05-12 12:44:28,412 INFO L125 PetriNetUnfolderBase]: For 139385/139385 co-relation queries the response was YES. [2024-05-12 12:44:28,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18348 conditions, 3110 events. 1700/3110 cut-off events. For 139385/139385 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19110 event pairs, 453 based on Foata normal form. 2/2951 useless extension candidates. Maximal degree in co-relation 18194. Up to 2651 conditions per place. [2024-05-12 12:44:28,446 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 252 selfloop transitions, 27 changer transitions 0/286 dead transitions. [2024-05-12 12:44:28,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 286 transitions, 3606 flow [2024-05-12 12:44:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:44:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:44:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:44:28,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:44:28,447 INFO L175 Difference]: Start difference. First operand has 299 places, 250 transitions, 2792 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:44:28,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 286 transitions, 3606 flow [2024-05-12 12:44:29,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 286 transitions, 3496 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-05-12 12:44:29,065 INFO L231 Difference]: Finished difference. Result has 303 places, 252 transitions, 2824 flow [2024-05-12 12:44:29,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=303, PETRI_TRANSITIONS=252} [2024-05-12 12:44:29,065 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2024-05-12 12:44:29,065 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 252 transitions, 2824 flow [2024-05-12 12:44:29,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:29,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:29,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:29,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 12:44:29,065 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:29,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 49389598, now seen corresponding path program 3 times [2024-05-12 12:44:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:29,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640085249] [2024-05-12 12:44:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:29,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:44:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640085249] [2024-05-12 12:44:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640085249] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:33,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085883827] [2024-05-12 12:44:33,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:33,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:33,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:33,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:33,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 252 transitions, 2824 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:33,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:33,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:33,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:34,557 INFO L124 PetriNetUnfolderBase]: 1713/3129 cut-off events. [2024-05-12 12:44:34,557 INFO L125 PetriNetUnfolderBase]: For 140708/140708 co-relation queries the response was YES. [2024-05-12 12:44:34,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18358 conditions, 3129 events. 1713/3129 cut-off events. For 140708/140708 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19209 event pairs, 477 based on Foata normal form. 2/2966 useless extension candidates. Maximal degree in co-relation 18202. Up to 2699 conditions per place. [2024-05-12 12:44:34,591 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 246 selfloop transitions, 30 changer transitions 0/283 dead transitions. [2024-05-12 12:44:34,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 283 transitions, 3520 flow [2024-05-12 12:44:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:44:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:44:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-05-12 12:44:34,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 12:44:34,592 INFO L175 Difference]: Start difference. First operand has 303 places, 252 transitions, 2824 flow. Second operand 11 states and 165 transitions. [2024-05-12 12:44:34,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 283 transitions, 3520 flow [2024-05-12 12:44:35,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 283 transitions, 3406 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-05-12 12:44:35,189 INFO L231 Difference]: Finished difference. Result has 307 places, 254 transitions, 2841 flow [2024-05-12 12:44:35,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2710, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2841, PETRI_PLACES=307, PETRI_TRANSITIONS=254} [2024-05-12 12:44:35,189 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2024-05-12 12:44:35,189 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 254 transitions, 2841 flow [2024-05-12 12:44:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:35,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:35,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:35,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-05-12 12:44:35,190 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:35,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 633793630, now seen corresponding path program 1 times [2024-05-12 12:44:35,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714436302] [2024-05-12 12:44:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:38,536 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 12:44:38,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:38,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714436302] [2024-05-12 12:44:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714436302] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:38,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:38,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214725845] [2024-05-12 12:44:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:38,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:38,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:38,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:38,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 254 transitions, 2841 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:38,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:38,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:38,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:39,798 INFO L124 PetriNetUnfolderBase]: 1710/3125 cut-off events. [2024-05-12 12:44:39,799 INFO L125 PetriNetUnfolderBase]: For 129989/129989 co-relation queries the response was YES. [2024-05-12 12:44:39,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17861 conditions, 3125 events. 1710/3125 cut-off events. For 129989/129989 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19187 event pairs, 515 based on Foata normal form. 2/2965 useless extension candidates. Maximal degree in co-relation 17704. Up to 2692 conditions per place. [2024-05-12 12:44:39,836 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 247 selfloop transitions, 34 changer transitions 0/288 dead transitions. [2024-05-12 12:44:39,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 288 transitions, 3639 flow [2024-05-12 12:44:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:44:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:44:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-05-12 12:44:39,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-05-12 12:44:39,838 INFO L175 Difference]: Start difference. First operand has 307 places, 254 transitions, 2841 flow. Second operand 11 states and 164 transitions. [2024-05-12 12:44:39,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 288 transitions, 3639 flow [2024-05-12 12:44:40,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 288 transitions, 3534 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-05-12 12:44:40,410 INFO L231 Difference]: Finished difference. Result has 309 places, 256 transitions, 2930 flow [2024-05-12 12:44:40,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2930, PETRI_PLACES=309, PETRI_TRANSITIONS=256} [2024-05-12 12:44:40,410 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 265 predicate places. [2024-05-12 12:44:40,410 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 256 transitions, 2930 flow [2024-05-12 12:44:40,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:40,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:40,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:40,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-05-12 12:44:40,411 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:40,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash 625211590, now seen corresponding path program 9 times [2024-05-12 12:44:40,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:40,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676290159] [2024-05-12 12:44:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:40,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:43,470 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 12:44:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676290159] [2024-05-12 12:44:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676290159] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:43,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:43,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394657871] [2024-05-12 12:44:43,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:43,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:43,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:43,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 256 transitions, 2930 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:43,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:43,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:43,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:44,927 INFO L124 PetriNetUnfolderBase]: 1730/3166 cut-off events. [2024-05-12 12:44:44,928 INFO L125 PetriNetUnfolderBase]: For 134149/134149 co-relation queries the response was YES. [2024-05-12 12:44:44,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18269 conditions, 3166 events. 1730/3166 cut-off events. For 134149/134149 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19520 event pairs, 483 based on Foata normal form. 2/3002 useless extension candidates. Maximal degree in co-relation 18111. Up to 2688 conditions per place. [2024-05-12 12:44:44,960 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 248 selfloop transitions, 33 changer transitions 0/288 dead transitions. [2024-05-12 12:44:44,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 288 transitions, 3686 flow [2024-05-12 12:44:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:44:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:44:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-05-12 12:44:44,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925 [2024-05-12 12:44:44,961 INFO L175 Difference]: Start difference. First operand has 309 places, 256 transitions, 2930 flow. Second operand 10 states and 157 transitions. [2024-05-12 12:44:44,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 288 transitions, 3686 flow [2024-05-12 12:44:45,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 288 transitions, 3510 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-05-12 12:44:45,562 INFO L231 Difference]: Finished difference. Result has 310 places, 257 transitions, 2864 flow [2024-05-12 12:44:45,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2864, PETRI_PLACES=310, PETRI_TRANSITIONS=257} [2024-05-12 12:44:45,563 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 266 predicate places. [2024-05-12 12:44:45,563 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 257 transitions, 2864 flow [2024-05-12 12:44:45,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:45,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:45,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-05-12 12:44:45,563 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:45,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash 279078208, now seen corresponding path program 4 times [2024-05-12 12:44:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:45,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445754274] [2024-05-12 12:44:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:45,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:44:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445754274] [2024-05-12 12:44:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445754274] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079901345] [2024-05-12 12:44:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:49,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:49,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:49,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:49,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 257 transitions, 2864 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:49,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:49,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:49,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:51,167 INFO L124 PetriNetUnfolderBase]: 1743/3185 cut-off events. [2024-05-12 12:44:51,168 INFO L125 PetriNetUnfolderBase]: For 129605/129605 co-relation queries the response was YES. [2024-05-12 12:44:51,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18105 conditions, 3185 events. 1743/3185 cut-off events. For 129605/129605 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19622 event pairs, 477 based on Foata normal form. 2/3017 useless extension candidates. Maximal degree in co-relation 17946. Up to 2648 conditions per place. [2024-05-12 12:44:51,204 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 239 selfloop transitions, 44 changer transitions 0/290 dead transitions. [2024-05-12 12:44:51,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 290 transitions, 3586 flow [2024-05-12 12:44:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:44:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:44:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 12:44:51,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3840909090909091 [2024-05-12 12:44:51,205 INFO L175 Difference]: Start difference. First operand has 310 places, 257 transitions, 2864 flow. Second operand 11 states and 169 transitions. [2024-05-12 12:44:51,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 290 transitions, 3586 flow [2024-05-12 12:44:51,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 290 transitions, 3492 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-05-12 12:44:51,859 INFO L231 Difference]: Finished difference. Result has 313 places, 259 transitions, 2933 flow [2024-05-12 12:44:51,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2933, PETRI_PLACES=313, PETRI_TRANSITIONS=259} [2024-05-12 12:44:51,859 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 269 predicate places. [2024-05-12 12:44:51,860 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 259 transitions, 2933 flow [2024-05-12 12:44:51,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:51,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:51,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:51,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-05-12 12:44:51,860 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:51,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash 279376738, now seen corresponding path program 5 times [2024-05-12 12:44:51,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:51,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877099621] [2024-05-12 12:44:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:51,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:44:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:44:55,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:44:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877099621] [2024-05-12 12:44:55,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877099621] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:44:55,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:44:55,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:44:55,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241965265] [2024-05-12 12:44:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:44:55,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:44:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:44:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:44:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:44:55,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:44:55,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 259 transitions, 2933 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:55,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:44:55,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:44:55,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:44:57,257 INFO L124 PetriNetUnfolderBase]: 1773/3229 cut-off events. [2024-05-12 12:44:57,257 INFO L125 PetriNetUnfolderBase]: For 142809/142809 co-relation queries the response was YES. [2024-05-12 12:44:57,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18652 conditions, 3229 events. 1773/3229 cut-off events. For 142809/142809 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19922 event pairs, 474 based on Foata normal form. 2/3055 useless extension candidates. Maximal degree in co-relation 18492. Up to 2536 conditions per place. [2024-05-12 12:44:57,295 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 224 selfloop transitions, 66 changer transitions 0/297 dead transitions. [2024-05-12 12:44:57,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 297 transitions, 3959 flow [2024-05-12 12:44:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:44:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:44:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 12:44:57,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-05-12 12:44:57,296 INFO L175 Difference]: Start difference. First operand has 313 places, 259 transitions, 2933 flow. Second operand 11 states and 174 transitions. [2024-05-12 12:44:57,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 297 transitions, 3959 flow [2024-05-12 12:44:57,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 297 transitions, 3822 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-05-12 12:44:57,918 INFO L231 Difference]: Finished difference. Result has 315 places, 263 transitions, 3078 flow [2024-05-12 12:44:57,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3078, PETRI_PLACES=315, PETRI_TRANSITIONS=263} [2024-05-12 12:44:57,918 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 271 predicate places. [2024-05-12 12:44:57,918 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 263 transitions, 3078 flow [2024-05-12 12:44:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:44:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:44:57,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:44:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-05-12 12:44:57,919 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:44:57,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:44:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash 270788560, now seen corresponding path program 10 times [2024-05-12 12:44:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:44:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978208423] [2024-05-12 12:44:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:44:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:44:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:45:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978208423] [2024-05-12 12:45:01,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978208423] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:01,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:01,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:45:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488287762] [2024-05-12 12:45:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:01,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:45:01,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:45:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:45:01,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:01,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 263 transitions, 3078 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:01,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:01,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:01,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:02,535 INFO L124 PetriNetUnfolderBase]: 1793/3266 cut-off events. [2024-05-12 12:45:02,535 INFO L125 PetriNetUnfolderBase]: For 147223/147223 co-relation queries the response was YES. [2024-05-12 12:45:02,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19122 conditions, 3266 events. 1793/3266 cut-off events. For 147223/147223 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20202 event pairs, 484 based on Foata normal form. 2/3092 useless extension candidates. Maximal degree in co-relation 18961. Up to 2764 conditions per place. [2024-05-12 12:45:02,575 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 260 selfloop transitions, 32 changer transitions 0/299 dead transitions. [2024-05-12 12:45:02,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 299 transitions, 3934 flow [2024-05-12 12:45:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:45:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:45:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-05-12 12:45:02,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:45:02,577 INFO L175 Difference]: Start difference. First operand has 315 places, 263 transitions, 3078 flow. Second operand 10 states and 160 transitions. [2024-05-12 12:45:02,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 299 transitions, 3934 flow [2024-05-12 12:45:03,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 299 transitions, 3794 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-05-12 12:45:03,249 INFO L231 Difference]: Finished difference. Result has 318 places, 264 transitions, 3046 flow [2024-05-12 12:45:03,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3046, PETRI_PLACES=318, PETRI_TRANSITIONS=264} [2024-05-12 12:45:03,250 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2024-05-12 12:45:03,250 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 264 transitions, 3046 flow [2024-05-12 12:45:03,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:03,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:03,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:03,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-05-12 12:45:03,250 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:03,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:03,251 INFO L85 PathProgramCache]: Analyzing trace with hash 271034638, now seen corresponding path program 6 times [2024-05-12 12:45:03,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665697538] [2024-05-12 12:45:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:03,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:07,375 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 12:45:07,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:07,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665697538] [2024-05-12 12:45:07,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665697538] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:07,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:07,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:45:07,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222395504] [2024-05-12 12:45:07,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:07,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:45:07,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:07,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:45:07,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:45:07,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:07,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 264 transitions, 3046 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:07,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:07,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:07,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:08,952 INFO L124 PetriNetUnfolderBase]: 1789/3266 cut-off events. [2024-05-12 12:45:08,952 INFO L125 PetriNetUnfolderBase]: For 137663/137663 co-relation queries the response was YES. [2024-05-12 12:45:08,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18782 conditions, 3266 events. 1789/3266 cut-off events. For 137663/137663 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20281 event pairs, 493 based on Foata normal form. 2/3089 useless extension candidates. Maximal degree in co-relation 18619. Up to 2779 conditions per place. [2024-05-12 12:45:08,985 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 251 selfloop transitions, 36 changer transitions 0/294 dead transitions. [2024-05-12 12:45:08,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 294 transitions, 3706 flow [2024-05-12 12:45:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:45:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:45:08,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-05-12 12:45:08,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-05-12 12:45:08,986 INFO L175 Difference]: Start difference. First operand has 318 places, 264 transitions, 3046 flow. Second operand 11 states and 167 transitions. [2024-05-12 12:45:08,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 294 transitions, 3706 flow [2024-05-12 12:45:09,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 294 transitions, 3584 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-05-12 12:45:09,646 INFO L231 Difference]: Finished difference. Result has 321 places, 264 transitions, 3001 flow [2024-05-12 12:45:09,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3001, PETRI_PLACES=321, PETRI_TRANSITIONS=264} [2024-05-12 12:45:09,647 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2024-05-12 12:45:09,647 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 264 transitions, 3001 flow [2024-05-12 12:45:09,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:09,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:09,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-05-12 12:45:09,647 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2110240834, now seen corresponding path program 11 times [2024-05-12 12:45:09,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:09,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982633541] [2024-05-12 12:45:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:12,818 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 12:45:12,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:12,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982633541] [2024-05-12 12:45:12,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982633541] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:12,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:12,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:12,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145933474] [2024-05-12 12:45:12,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:12,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:12,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:12,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:12,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 264 transitions, 3001 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:12,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:12,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:12,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:14,203 INFO L124 PetriNetUnfolderBase]: 1809/3310 cut-off events. [2024-05-12 12:45:14,203 INFO L125 PetriNetUnfolderBase]: For 139964/139967 co-relation queries the response was YES. [2024-05-12 12:45:14,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18956 conditions, 3310 events. 1809/3310 cut-off events. For 139964/139967 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 20623 event pairs, 476 based on Foata normal form. 2/3127 useless extension candidates. Maximal degree in co-relation 18792. Up to 2777 conditions per place. [2024-05-12 12:45:14,247 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 252 selfloop transitions, 38 changer transitions 0/297 dead transitions. [2024-05-12 12:45:14,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 297 transitions, 3781 flow [2024-05-12 12:45:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:45:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:45:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 12:45:14,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-05-12 12:45:14,248 INFO L175 Difference]: Start difference. First operand has 321 places, 264 transitions, 3001 flow. Second operand 10 states and 161 transitions. [2024-05-12 12:45:14,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 297 transitions, 3781 flow [2024-05-12 12:45:14,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 297 transitions, 3673 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-05-12 12:45:14,954 INFO L231 Difference]: Finished difference. Result has 321 places, 265 transitions, 3015 flow [2024-05-12 12:45:14,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3015, PETRI_PLACES=321, PETRI_TRANSITIONS=265} [2024-05-12 12:45:14,954 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 277 predicate places. [2024-05-12 12:45:14,954 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 265 transitions, 3015 flow [2024-05-12 12:45:14,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:14,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:14,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:14,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-05-12 12:45:14,955 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:14,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2109933376, now seen corresponding path program 7 times [2024-05-12 12:45:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:14,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599100265] [2024-05-12 12:45:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:14,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:45:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599100265] [2024-05-12 12:45:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599100265] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:18,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:18,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 12:45:18,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163909122] [2024-05-12 12:45:18,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:18,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 12:45:18,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 12:45:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-05-12 12:45:18,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:18,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 265 transitions, 3015 flow. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:18,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:18,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:18,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:19,847 INFO L124 PetriNetUnfolderBase]: 1839/3354 cut-off events. [2024-05-12 12:45:19,847 INFO L125 PetriNetUnfolderBase]: For 156914/156917 co-relation queries the response was YES. [2024-05-12 12:45:19,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19667 conditions, 3354 events. 1839/3354 cut-off events. For 156914/156917 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20861 event pairs, 404 based on Foata normal form. 2/3164 useless extension candidates. Maximal degree in co-relation 19502. Up to 2170 conditions per place. [2024-05-12 12:45:19,889 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 161 selfloop transitions, 131 changer transitions 0/299 dead transitions. [2024-05-12 12:45:19,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 299 transitions, 4049 flow [2024-05-12 12:45:19,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:45:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:45:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 12:45:19,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-05-12 12:45:19,891 INFO L175 Difference]: Start difference. First operand has 321 places, 265 transitions, 3015 flow. Second operand 10 states and 165 transitions. [2024-05-12 12:45:19,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 299 transitions, 4049 flow [2024-05-12 12:45:20,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 299 transitions, 3941 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-05-12 12:45:20,771 INFO L231 Difference]: Finished difference. Result has 323 places, 269 transitions, 3332 flow [2024-05-12 12:45:20,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2907, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3332, PETRI_PLACES=323, PETRI_TRANSITIONS=269} [2024-05-12 12:45:20,771 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 279 predicate places. [2024-05-12 12:45:20,772 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 269 transitions, 3332 flow [2024-05-12 12:45:20,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 11 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:20,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:20,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:20,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-05-12 12:45:20,772 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:20,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:20,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2096798588, now seen corresponding path program 8 times [2024-05-12 12:45:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:20,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963928890] [2024-05-12 12:45:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:20,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:45:25,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963928890] [2024-05-12 12:45:25,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963928890] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:25,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:25,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:25,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241846277] [2024-05-12 12:45:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:25,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:25,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 269 transitions, 3332 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:25,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:25,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:25,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:26,646 INFO L124 PetriNetUnfolderBase]: 1852/3373 cut-off events. [2024-05-12 12:45:26,646 INFO L125 PetriNetUnfolderBase]: For 158279/158282 co-relation queries the response was YES. [2024-05-12 12:45:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20169 conditions, 3373 events. 1852/3373 cut-off events. For 158279/158282 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20981 event pairs, 444 based on Foata normal form. 2/3180 useless extension candidates. Maximal degree in co-relation 20003. Up to 2733 conditions per place. [2024-05-12 12:45:26,689 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 240 selfloop transitions, 56 changer transitions 0/303 dead transitions. [2024-05-12 12:45:26,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 303 transitions, 4096 flow [2024-05-12 12:45:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:45:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:45:26,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 12:45:26,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-05-12 12:45:26,690 INFO L175 Difference]: Start difference. First operand has 323 places, 269 transitions, 3332 flow. Second operand 11 states and 174 transitions. [2024-05-12 12:45:26,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 303 transitions, 4096 flow [2024-05-12 12:45:27,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 303 transitions, 3868 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-05-12 12:45:27,607 INFO L231 Difference]: Finished difference. Result has 327 places, 271 transitions, 3303 flow [2024-05-12 12:45:27,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3303, PETRI_PLACES=327, PETRI_TRANSITIONS=271} [2024-05-12 12:45:27,607 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 283 predicate places. [2024-05-12 12:45:27,607 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 271 transitions, 3303 flow [2024-05-12 12:45:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:27,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:27,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:27,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-05-12 12:45:27,608 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:27,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash -596595800, now seen corresponding path program 9 times [2024-05-12 12:45:27,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718954376] [2024-05-12 12:45:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:32,931 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 12:45:32,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:32,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718954376] [2024-05-12 12:45:32,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718954376] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:32,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:32,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:32,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730845845] [2024-05-12 12:45:32,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:32,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:32,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:32,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:32,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:33,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:33,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 271 transitions, 3303 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:33,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:33,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:33,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:34,673 INFO L124 PetriNetUnfolderBase]: 1865/3392 cut-off events. [2024-05-12 12:45:34,674 INFO L125 PetriNetUnfolderBase]: For 157435/157438 co-relation queries the response was YES. [2024-05-12 12:45:34,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20257 conditions, 3392 events. 1865/3392 cut-off events. For 157435/157438 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21068 event pairs, 414 based on Foata normal form. 2/3196 useless extension candidates. Maximal degree in co-relation 20090. Up to 2621 conditions per place. [2024-05-12 12:45:34,714 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 223 selfloop transitions, 75 changer transitions 0/305 dead transitions. [2024-05-12 12:45:34,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 305 transitions, 4067 flow [2024-05-12 12:45:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:45:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:45:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 12:45:34,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-05-12 12:45:34,715 INFO L175 Difference]: Start difference. First operand has 327 places, 271 transitions, 3303 flow. Second operand 11 states and 175 transitions. [2024-05-12 12:45:34,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 305 transitions, 4067 flow [2024-05-12 12:45:35,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 305 transitions, 3906 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-05-12 12:45:35,541 INFO L231 Difference]: Finished difference. Result has 329 places, 273 transitions, 3375 flow [2024-05-12 12:45:35,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3375, PETRI_PLACES=329, PETRI_TRANSITIONS=273} [2024-05-12 12:45:35,541 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 285 predicate places. [2024-05-12 12:45:35,541 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 273 transitions, 3375 flow [2024-05-12 12:45:35,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:35,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:35,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:35,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-05-12 12:45:35,542 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:35,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash -801659600, now seen corresponding path program 10 times [2024-05-12 12:45:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:35,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366991426] [2024-05-12 12:45:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:35,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:45:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366991426] [2024-05-12 12:45:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366991426] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:39,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:39,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936382472] [2024-05-12 12:45:39,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:39,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:39,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:39,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:39,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:39,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 273 transitions, 3375 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:39,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:39,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:39,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:41,117 INFO L124 PetriNetUnfolderBase]: 1878/3411 cut-off events. [2024-05-12 12:45:41,117 INFO L125 PetriNetUnfolderBase]: For 160573/160576 co-relation queries the response was YES. [2024-05-12 12:45:41,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20503 conditions, 3411 events. 1878/3411 cut-off events. For 160573/160576 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21246 event pairs, 483 based on Foata normal form. 2/3212 useless extension candidates. Maximal degree in co-relation 20335. Up to 2827 conditions per place. [2024-05-12 12:45:41,161 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 252 selfloop transitions, 48 changer transitions 0/307 dead transitions. [2024-05-12 12:45:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 307 transitions, 4147 flow [2024-05-12 12:45:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:45:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:45:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 12:45:41,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-05-12 12:45:41,162 INFO L175 Difference]: Start difference. First operand has 329 places, 273 transitions, 3375 flow. Second operand 11 states and 173 transitions. [2024-05-12 12:45:41,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 307 transitions, 4147 flow [2024-05-12 12:45:42,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 307 transitions, 3944 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-05-12 12:45:42,070 INFO L231 Difference]: Finished difference. Result has 331 places, 275 transitions, 3355 flow [2024-05-12 12:45:42,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3355, PETRI_PLACES=331, PETRI_TRANSITIONS=275} [2024-05-12 12:45:42,071 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 287 predicate places. [2024-05-12 12:45:42,071 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 275 transitions, 3355 flow [2024-05-12 12:45:42,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:42,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:42,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-05-12 12:45:42,071 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:42,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -801947900, now seen corresponding path program 11 times [2024-05-12 12:45:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822966888] [2024-05-12 12:45:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:46,092 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 12:45:46,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:46,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822966888] [2024-05-12 12:45:46,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822966888] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:46,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:46,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:46,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266089084] [2024-05-12 12:45:46,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:46,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:46,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:46,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:46,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 275 transitions, 3355 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:46,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:46,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:46,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:47,644 INFO L124 PetriNetUnfolderBase]: 1891/3430 cut-off events. [2024-05-12 12:45:47,644 INFO L125 PetriNetUnfolderBase]: For 163044/163047 co-relation queries the response was YES. [2024-05-12 12:45:47,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 3430 events. 1891/3430 cut-off events. For 163044/163047 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 21376 event pairs, 489 based on Foata normal form. 2/3228 useless extension candidates. Maximal degree in co-relation 20354. Up to 2895 conditions per place. [2024-05-12 12:45:47,689 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 260 selfloop transitions, 41 changer transitions 0/308 dead transitions. [2024-05-12 12:45:47,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 308 transitions, 4129 flow [2024-05-12 12:45:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:45:47,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:45:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 12:45:47,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636 [2024-05-12 12:45:47,690 INFO L175 Difference]: Start difference. First operand has 331 places, 275 transitions, 3355 flow. Second operand 11 states and 171 transitions. [2024-05-12 12:45:47,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 308 transitions, 4129 flow [2024-05-12 12:45:48,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 308 transitions, 3976 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-05-12 12:45:48,617 INFO L231 Difference]: Finished difference. Result has 333 places, 277 transitions, 3375 flow [2024-05-12 12:45:48,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3375, PETRI_PLACES=333, PETRI_TRANSITIONS=277} [2024-05-12 12:45:48,617 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 289 predicate places. [2024-05-12 12:45:48,617 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 277 transitions, 3375 flow [2024-05-12 12:45:48,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:48,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:48,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-05-12 12:45:48,617 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:48,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:48,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2097095816, now seen corresponding path program 12 times [2024-05-12 12:45:48,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:48,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378170790] [2024-05-12 12:45:48,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:48,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:52,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:45:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:52,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378170790] [2024-05-12 12:45:52,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378170790] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:52,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:52,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:52,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130716092] [2024-05-12 12:45:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:52,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:52,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 277 transitions, 3375 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:52,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:52,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:52,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:53,500 INFO L124 PetriNetUnfolderBase]: 1911/3473 cut-off events. [2024-05-12 12:45:53,501 INFO L125 PetriNetUnfolderBase]: For 167710/167713 co-relation queries the response was YES. [2024-05-12 12:45:53,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20839 conditions, 3473 events. 1911/3473 cut-off events. For 167710/167713 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 21712 event pairs, 456 based on Foata normal form. 2/3269 useless extension candidates. Maximal degree in co-relation 20669. Up to 2864 conditions per place. [2024-05-12 12:45:53,543 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 255 selfloop transitions, 48 changer transitions 0/310 dead transitions. [2024-05-12 12:45:53,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 310 transitions, 4183 flow [2024-05-12 12:45:53,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:45:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:45:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 12:45:53,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-05-12 12:45:53,544 INFO L175 Difference]: Start difference. First operand has 333 places, 277 transitions, 3375 flow. Second operand 10 states and 162 transitions. [2024-05-12 12:45:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 310 transitions, 4183 flow [2024-05-12 12:45:54,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 310 transitions, 4040 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-05-12 12:45:54,473 INFO L231 Difference]: Finished difference. Result has 334 places, 278 transitions, 3376 flow [2024-05-12 12:45:54,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3376, PETRI_PLACES=334, PETRI_TRANSITIONS=278} [2024-05-12 12:45:54,473 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 290 predicate places. [2024-05-12 12:45:54,473 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 278 transitions, 3376 flow [2024-05-12 12:45:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:54,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:45:54,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:45:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-05-12 12:45:54,473 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:45:54,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:45:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash -810231038, now seen corresponding path program 13 times [2024-05-12 12:45:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:45:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486111082] [2024-05-12 12:45:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:45:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:45:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:45:57,890 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 12:45:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:45:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486111082] [2024-05-12 12:45:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486111082] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:45:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:45:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:45:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023397809] [2024-05-12 12:45:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:45:57,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:45:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:45:57,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:45:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:45:58,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:45:58,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 278 transitions, 3376 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:45:58,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:45:58,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:45:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:45:59,320 INFO L124 PetriNetUnfolderBase]: 1931/3516 cut-off events. [2024-05-12 12:45:59,320 INFO L125 PetriNetUnfolderBase]: For 172842/172845 co-relation queries the response was YES. [2024-05-12 12:45:59,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21244 conditions, 3516 events. 1931/3516 cut-off events. For 172842/172845 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 22083 event pairs, 503 based on Foata normal form. 2/3309 useless extension candidates. Maximal degree in co-relation 21073. Up to 3005 conditions per place. [2024-05-12 12:45:59,368 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 270 selfloop transitions, 33 changer transitions 0/310 dead transitions. [2024-05-12 12:45:59,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 310 transitions, 4182 flow [2024-05-12 12:45:59,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:45:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:45:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:45:59,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:45:59,370 INFO L175 Difference]: Start difference. First operand has 334 places, 278 transitions, 3376 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:45:59,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 310 transitions, 4182 flow [2024-05-12 12:46:00,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 310 transitions, 4052 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-05-12 12:46:00,467 INFO L231 Difference]: Finished difference. Result has 336 places, 279 transitions, 3362 flow [2024-05-12 12:46:00,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3362, PETRI_PLACES=336, PETRI_TRANSITIONS=279} [2024-05-12 12:46:00,467 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 292 predicate places. [2024-05-12 12:46:00,467 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 279 transitions, 3362 flow [2024-05-12 12:46:00,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:00,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:00,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:00,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-05-12 12:46:00,467 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:00,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash 711390978, now seen corresponding path program 14 times [2024-05-12 12:46:00,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:00,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241173744] [2024-05-12 12:46:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:00,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:03,749 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 12:46:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241173744] [2024-05-12 12:46:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241173744] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869961804] [2024-05-12 12:46:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:03,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:03,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 279 transitions, 3362 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:03,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:03,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:03,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:05,089 INFO L124 PetriNetUnfolderBase]: 1951/3558 cut-off events. [2024-05-12 12:46:05,089 INFO L125 PetriNetUnfolderBase]: For 175696/175699 co-relation queries the response was YES. [2024-05-12 12:46:05,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21441 conditions, 3558 events. 1951/3558 cut-off events. For 175696/175699 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 22465 event pairs, 434 based on Foata normal form. 2/3349 useless extension candidates. Maximal degree in co-relation 21269. Up to 2792 conditions per place. [2024-05-12 12:46:05,141 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 235 selfloop transitions, 69 changer transitions 0/311 dead transitions. [2024-05-12 12:46:05,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 311 transitions, 4174 flow [2024-05-12 12:46:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:46:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:46:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 12:46:05,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-05-12 12:46:05,143 INFO L175 Difference]: Start difference. First operand has 336 places, 279 transitions, 3362 flow. Second operand 10 states and 161 transitions. [2024-05-12 12:46:05,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 311 transitions, 4174 flow [2024-05-12 12:46:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 311 transitions, 4072 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-05-12 12:46:06,092 INFO L231 Difference]: Finished difference. Result has 338 places, 280 transitions, 3450 flow [2024-05-12 12:46:06,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3450, PETRI_PLACES=338, PETRI_TRANSITIONS=280} [2024-05-12 12:46:06,092 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 294 predicate places. [2024-05-12 12:46:06,092 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 280 transitions, 3450 flow [2024-05-12 12:46:06,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:06,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:06,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-05-12 12:46:06,093 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:06,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash -810237548, now seen corresponding path program 15 times [2024-05-12 12:46:06,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:06,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557152806] [2024-05-12 12:46:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:06,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:09,192 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 12:46:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:09,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557152806] [2024-05-12 12:46:09,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557152806] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:09,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:09,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:09,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308150860] [2024-05-12 12:46:09,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:09,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:09,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:09,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:09,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:09,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 280 transitions, 3450 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:09,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:10,697 INFO L124 PetriNetUnfolderBase]: 1971/3595 cut-off events. [2024-05-12 12:46:10,697 INFO L125 PetriNetUnfolderBase]: For 179838/179841 co-relation queries the response was YES. [2024-05-12 12:46:10,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21886 conditions, 3595 events. 1971/3595 cut-off events. For 179838/179841 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22808 event pairs, 510 based on Foata normal form. 2/3385 useless extension candidates. Maximal degree in co-relation 21713. Up to 3054 conditions per place. [2024-05-12 12:46:10,743 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 277 selfloop transitions, 32 changer transitions 0/316 dead transitions. [2024-05-12 12:46:10,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 316 transitions, 4350 flow [2024-05-12 12:46:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:46:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:46:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-05-12 12:46:10,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.405 [2024-05-12 12:46:10,744 INFO L175 Difference]: Start difference. First operand has 338 places, 280 transitions, 3450 flow. Second operand 10 states and 162 transitions. [2024-05-12 12:46:10,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 316 transitions, 4350 flow [2024-05-12 12:46:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 316 transitions, 4174 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 12:46:11,768 INFO L231 Difference]: Finished difference. Result has 340 places, 281 transitions, 3392 flow [2024-05-12 12:46:11,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3274, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3392, PETRI_PLACES=340, PETRI_TRANSITIONS=281} [2024-05-12 12:46:11,769 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 296 predicate places. [2024-05-12 12:46:11,769 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 281 transitions, 3392 flow [2024-05-12 12:46:11,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:11,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:11,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:11,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-05-12 12:46:11,769 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:11,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash -665535972, now seen corresponding path program 12 times [2024-05-12 12:46:11,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:11,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34768788] [2024-05-12 12:46:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:15,877 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 12:46:15,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34768788] [2024-05-12 12:46:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34768788] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:15,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001473209] [2024-05-12 12:46:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:15,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:15,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:16,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:16,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 281 transitions, 3392 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:16,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:16,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:16,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:17,332 INFO L124 PetriNetUnfolderBase]: 1984/3618 cut-off events. [2024-05-12 12:46:17,333 INFO L125 PetriNetUnfolderBase]: For 180896/180896 co-relation queries the response was YES. [2024-05-12 12:46:17,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21682 conditions, 3618 events. 1984/3618 cut-off events. For 180896/180896 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22943 event pairs, 617 based on Foata normal form. 2/3406 useless extension candidates. Maximal degree in co-relation 21508. Up to 3252 conditions per place. [2024-05-12 12:46:17,379 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 281 selfloop transitions, 21 changer transitions 0/309 dead transitions. [2024-05-12 12:46:17,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 309 transitions, 4382 flow [2024-05-12 12:46:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:46:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:46:17,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-05-12 12:46:17,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613636363636364 [2024-05-12 12:46:17,380 INFO L175 Difference]: Start difference. First operand has 340 places, 281 transitions, 3392 flow. Second operand 11 states and 159 transitions. [2024-05-12 12:46:17,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 309 transitions, 4382 flow [2024-05-12 12:46:18,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 309 transitions, 4278 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 12:46:18,301 INFO L231 Difference]: Finished difference. Result has 344 places, 284 transitions, 3423 flow [2024-05-12 12:46:18,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3288, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3423, PETRI_PLACES=344, PETRI_TRANSITIONS=284} [2024-05-12 12:46:18,301 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 300 predicate places. [2024-05-12 12:46:18,301 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 284 transitions, 3423 flow [2024-05-12 12:46:18,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:18,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:18,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:18,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-05-12 12:46:18,302 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:18,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1062015780, now seen corresponding path program 16 times [2024-05-12 12:46:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:18,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492216036] [2024-05-12 12:46:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:21,569 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 12:46:21,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:21,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492216036] [2024-05-12 12:46:21,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492216036] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:21,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:21,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:21,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391236944] [2024-05-12 12:46:21,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:21,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:21,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:21,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:21,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 284 transitions, 3423 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:21,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:21,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:21,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:23,012 INFO L124 PetriNetUnfolderBase]: 2004/3662 cut-off events. [2024-05-12 12:46:23,012 INFO L125 PetriNetUnfolderBase]: For 183028/183031 co-relation queries the response was YES. [2024-05-12 12:46:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21876 conditions, 3662 events. 2004/3662 cut-off events. For 183028/183031 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 23295 event pairs, 500 based on Foata normal form. 2/3445 useless extension candidates. Maximal degree in co-relation 21700. Up to 3050 conditions per place. [2024-05-12 12:46:23,054 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 263 selfloop transitions, 45 changer transitions 0/315 dead transitions. [2024-05-12 12:46:23,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 315 transitions, 4243 flow [2024-05-12 12:46:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:46:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:46:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-05-12 12:46:23,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-05-12 12:46:23,056 INFO L175 Difference]: Start difference. First operand has 344 places, 284 transitions, 3423 flow. Second operand 10 states and 158 transitions. [2024-05-12 12:46:23,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 315 transitions, 4243 flow [2024-05-12 12:46:24,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 315 transitions, 4000 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-05-12 12:46:24,048 INFO L231 Difference]: Finished difference. Result has 345 places, 285 transitions, 3326 flow [2024-05-12 12:46:24,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3326, PETRI_PLACES=345, PETRI_TRANSITIONS=285} [2024-05-12 12:46:24,048 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 301 predicate places. [2024-05-12 12:46:24,048 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 285 transitions, 3326 flow [2024-05-12 12:46:24,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:24,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:24,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:24,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-05-12 12:46:24,049 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:24,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:24,049 INFO L85 PathProgramCache]: Analyzing trace with hash -665546202, now seen corresponding path program 13 times [2024-05-12 12:46:24,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:24,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012097395] [2024-05-12 12:46:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:24,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:28,253 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 12:46:28,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:28,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012097395] [2024-05-12 12:46:28,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012097395] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:28,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:28,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:28,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279223286] [2024-05-12 12:46:28,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:28,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:28,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:28,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:28,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 285 transitions, 3326 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:28,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:28,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:28,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:29,789 INFO L124 PetriNetUnfolderBase]: 2000/3657 cut-off events. [2024-05-12 12:46:29,789 INFO L125 PetriNetUnfolderBase]: For 170842/170845 co-relation queries the response was YES. [2024-05-12 12:46:29,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21134 conditions, 3657 events. 2000/3657 cut-off events. For 170842/170845 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 23277 event pairs, 420 based on Foata normal form. 2/3438 useless extension candidates. Maximal degree in co-relation 20958. Up to 2633 conditions per place. [2024-05-12 12:46:29,835 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 202 selfloop transitions, 107 changer transitions 0/316 dead transitions. [2024-05-12 12:46:29,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 316 transitions, 4036 flow [2024-05-12 12:46:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:46:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:46:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 12:46:29,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-05-12 12:46:29,836 INFO L175 Difference]: Start difference. First operand has 345 places, 285 transitions, 3326 flow. Second operand 11 states and 174 transitions. [2024-05-12 12:46:29,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 316 transitions, 4036 flow [2024-05-12 12:46:30,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 316 transitions, 3858 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-05-12 12:46:30,835 INFO L231 Difference]: Finished difference. Result has 348 places, 285 transitions, 3367 flow [2024-05-12 12:46:30,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3148, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3367, PETRI_PLACES=348, PETRI_TRANSITIONS=285} [2024-05-12 12:46:30,835 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 304 predicate places. [2024-05-12 12:46:30,836 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 285 transitions, 3367 flow [2024-05-12 12:46:30,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:30,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:30,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:30,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-05-12 12:46:30,836 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:30,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash -809991470, now seen corresponding path program 14 times [2024-05-12 12:46:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:30,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202833531] [2024-05-12 12:46:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:46:34,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:34,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202833531] [2024-05-12 12:46:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202833531] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:34,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:34,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611702611] [2024-05-12 12:46:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:34,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:34,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 285 transitions, 3367 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:34,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:34,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:34,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:35,929 INFO L124 PetriNetUnfolderBase]: 2013/3675 cut-off events. [2024-05-12 12:46:35,929 INFO L125 PetriNetUnfolderBase]: For 168338/168341 co-relation queries the response was YES. [2024-05-12 12:46:35,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21247 conditions, 3675 events. 2013/3675 cut-off events. For 168338/168341 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23397 event pairs, 535 based on Foata normal form. 2/3454 useless extension candidates. Maximal degree in co-relation 21070. Up to 3143 conditions per place. [2024-05-12 12:46:35,975 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 274 selfloop transitions, 36 changer transitions 0/317 dead transitions. [2024-05-12 12:46:35,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 317 transitions, 4155 flow [2024-05-12 12:46:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:46:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:46:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 12:46:35,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3840909090909091 [2024-05-12 12:46:35,976 INFO L175 Difference]: Start difference. First operand has 348 places, 285 transitions, 3367 flow. Second operand 11 states and 169 transitions. [2024-05-12 12:46:35,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 317 transitions, 4155 flow [2024-05-12 12:46:36,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 317 transitions, 3935 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-05-12 12:46:36,930 INFO L231 Difference]: Finished difference. Result has 349 places, 287 transitions, 3310 flow [2024-05-12 12:46:36,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3147, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3310, PETRI_PLACES=349, PETRI_TRANSITIONS=287} [2024-05-12 12:46:36,930 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 305 predicate places. [2024-05-12 12:46:36,930 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 287 transitions, 3310 flow [2024-05-12 12:46:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:36,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:36,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:36,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-05-12 12:46:36,931 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:36,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:36,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2097086888, now seen corresponding path program 15 times [2024-05-12 12:46:36,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:36,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637248917] [2024-05-12 12:46:36,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:36,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:46:41,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:41,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637248917] [2024-05-12 12:46:41,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637248917] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:41,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:41,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:41,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110265243] [2024-05-12 12:46:41,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:41,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:41,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:41,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:41,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:41,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:41,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 287 transitions, 3310 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:41,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:41,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:41,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:42,529 INFO L124 PetriNetUnfolderBase]: 2026/3695 cut-off events. [2024-05-12 12:46:42,530 INFO L125 PetriNetUnfolderBase]: For 173690/173693 co-relation queries the response was YES. [2024-05-12 12:46:42,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21197 conditions, 3695 events. 2026/3695 cut-off events. For 173690/173693 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23491 event pairs, 486 based on Foata normal form. 2/3470 useless extension candidates. Maximal degree in co-relation 21019. Up to 3057 conditions per place. [2024-05-12 12:46:42,582 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 262 selfloop transitions, 51 changer transitions 0/320 dead transitions. [2024-05-12 12:46:42,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 320 transitions, 4112 flow [2024-05-12 12:46:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:46:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:46:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-05-12 12:46:42,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-05-12 12:46:42,583 INFO L175 Difference]: Start difference. First operand has 349 places, 287 transitions, 3310 flow. Second operand 11 states and 172 transitions. [2024-05-12 12:46:42,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 320 transitions, 4112 flow [2024-05-12 12:46:43,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 320 transitions, 3975 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-05-12 12:46:43,551 INFO L231 Difference]: Finished difference. Result has 351 places, 289 transitions, 3370 flow [2024-05-12 12:46:43,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3173, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3370, PETRI_PLACES=351, PETRI_TRANSITIONS=289} [2024-05-12 12:46:43,551 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 307 predicate places. [2024-05-12 12:46:43,551 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 289 transitions, 3370 flow [2024-05-12 12:46:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:43,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-05-12 12:46:43,552 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:43,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash -392985056, now seen corresponding path program 17 times [2024-05-12 12:46:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587659351] [2024-05-12 12:46:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:46,548 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 12:46:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587659351] [2024-05-12 12:46:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587659351] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527874221] [2024-05-12 12:46:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:46,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:46,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 289 transitions, 3370 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:46,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:46,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:46,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:47,978 INFO L124 PetriNetUnfolderBase]: 2042/3723 cut-off events. [2024-05-12 12:46:47,978 INFO L125 PetriNetUnfolderBase]: For 177522/177525 co-relation queries the response was YES. [2024-05-12 12:46:48,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21553 conditions, 3723 events. 2042/3723 cut-off events. For 177522/177525 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 23748 event pairs, 549 based on Foata normal form. 2/3499 useless extension candidates. Maximal degree in co-relation 21374. Up to 3221 conditions per place. [2024-05-12 12:46:48,029 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 280 selfloop transitions, 31 changer transitions 0/318 dead transitions. [2024-05-12 12:46:48,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 318 transitions, 4192 flow [2024-05-12 12:46:48,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:46:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:46:48,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-05-12 12:46:48,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2024-05-12 12:46:48,030 INFO L175 Difference]: Start difference. First operand has 351 places, 289 transitions, 3370 flow. Second operand 10 states and 154 transitions. [2024-05-12 12:46:48,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 318 transitions, 4192 flow [2024-05-12 12:46:49,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 318 transitions, 4021 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-05-12 12:46:49,291 INFO L231 Difference]: Finished difference. Result has 352 places, 291 transitions, 3378 flow [2024-05-12 12:46:49,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3378, PETRI_PLACES=352, PETRI_TRANSITIONS=291} [2024-05-12 12:46:49,291 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 308 predicate places. [2024-05-12 12:46:49,291 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 291 transitions, 3378 flow [2024-05-12 12:46:49,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:49,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:49,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-05-12 12:46:49,292 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:49,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2105376536, now seen corresponding path program 18 times [2024-05-12 12:46:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174557363] [2024-05-12 12:46:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:46:52,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:52,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174557363] [2024-05-12 12:46:52,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174557363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:52,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:52,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:46:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724598629] [2024-05-12 12:46:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:46:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:46:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:46:52,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:52,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 291 transitions, 3378 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:52,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:52,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:52,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:54,088 INFO L124 PetriNetUnfolderBase]: 2062/3759 cut-off events. [2024-05-12 12:46:54,089 INFO L125 PetriNetUnfolderBase]: For 184554/184557 co-relation queries the response was YES. [2024-05-12 12:46:54,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21930 conditions, 3759 events. 2062/3759 cut-off events. For 184554/184557 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24034 event pairs, 500 based on Foata normal form. 2/3535 useless extension candidates. Maximal degree in co-relation 21750. Up to 3123 conditions per place. [2024-05-12 12:46:54,134 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 275 selfloop transitions, 44 changer transitions 0/326 dead transitions. [2024-05-12 12:46:54,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 326 transitions, 4306 flow [2024-05-12 12:46:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:46:54,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:46:54,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-05-12 12:46:54,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025 [2024-05-12 12:46:54,136 INFO L175 Difference]: Start difference. First operand has 352 places, 291 transitions, 3378 flow. Second operand 10 states and 161 transitions. [2024-05-12 12:46:54,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 326 transitions, 4306 flow [2024-05-12 12:46:55,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 4143 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-05-12 12:46:55,208 INFO L231 Difference]: Finished difference. Result has 354 places, 292 transitions, 3363 flow [2024-05-12 12:46:55,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3215, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3363, PETRI_PLACES=354, PETRI_TRANSITIONS=292} [2024-05-12 12:46:55,208 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 310 predicate places. [2024-05-12 12:46:55,208 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 292 transitions, 3363 flow [2024-05-12 12:46:55,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:55,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:46:55,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:46:55,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-05-12 12:46:55,209 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:46:55,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:46:55,209 INFO L85 PathProgramCache]: Analyzing trace with hash -392991566, now seen corresponding path program 19 times [2024-05-12 12:46:55,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:46:55,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492077100] [2024-05-12 12:46:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:46:55,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:46:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:46:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:46:58,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:46:58,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492077100] [2024-05-12 12:46:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492077100] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:46:58,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:46:58,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:46:58,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538432766] [2024-05-12 12:46:58,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:46:58,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:46:58,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:46:58,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:46:58,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:46:58,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:46:58,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 292 transitions, 3363 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:46:58,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:46:58,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:46:58,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:46:59,760 INFO L124 PetriNetUnfolderBase]: 2078/3793 cut-off events. [2024-05-12 12:46:59,761 INFO L125 PetriNetUnfolderBase]: For 187860/187863 co-relation queries the response was YES. [2024-05-12 12:46:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22173 conditions, 3793 events. 2078/3793 cut-off events. For 187860/187863 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24324 event pairs, 564 based on Foata normal form. 2/3567 useless extension candidates. Maximal degree in co-relation 21992. Up to 3272 conditions per place. [2024-05-12 12:46:59,817 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 287 selfloop transitions, 31 changer transitions 0/325 dead transitions. [2024-05-12 12:46:59,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 325 transitions, 4297 flow [2024-05-12 12:46:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:46:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:46:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-05-12 12:46:59,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-05-12 12:46:59,818 INFO L175 Difference]: Start difference. First operand has 354 places, 292 transitions, 3363 flow. Second operand 10 states and 156 transitions. [2024-05-12 12:46:59,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 325 transitions, 4297 flow [2024-05-12 12:47:00,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 325 transitions, 4165 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-05-12 12:47:00,954 INFO L231 Difference]: Finished difference. Result has 357 places, 296 transitions, 3493 flow [2024-05-12 12:47:00,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3231, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3493, PETRI_PLACES=357, PETRI_TRANSITIONS=296} [2024-05-12 12:47:00,955 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 313 predicate places. [2024-05-12 12:47:00,955 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 296 transitions, 3493 flow [2024-05-12 12:47:00,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:00,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:00,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:00,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-05-12 12:47:00,956 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:00,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2105130458, now seen corresponding path program 16 times [2024-05-12 12:47:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794567289] [2024-05-12 12:47:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:00,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:05,339 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 12:47:05,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:05,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794567289] [2024-05-12 12:47:05,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794567289] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:05,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:05,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:47:05,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565446482] [2024-05-12 12:47:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:05,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:47:05,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:47:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:47:05,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:05,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 296 transitions, 3493 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:05,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:05,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:05,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:07,046 INFO L124 PetriNetUnfolderBase]: 2091/3812 cut-off events. [2024-05-12 12:47:07,046 INFO L125 PetriNetUnfolderBase]: For 190771/190774 co-relation queries the response was YES. [2024-05-12 12:47:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22161 conditions, 3812 events. 2091/3812 cut-off events. For 190771/190774 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24439 event pairs, 526 based on Foata normal form. 2/3582 useless extension candidates. Maximal degree in co-relation 21978. Up to 3191 conditions per place. [2024-05-12 12:47:07,094 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 272 selfloop transitions, 48 changer transitions 0/327 dead transitions. [2024-05-12 12:47:07,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 327 transitions, 4307 flow [2024-05-12 12:47:07,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:07,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-05-12 12:47:07,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-05-12 12:47:07,095 INFO L175 Difference]: Start difference. First operand has 357 places, 296 transitions, 3493 flow. Second operand 11 states and 168 transitions. [2024-05-12 12:47:07,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 327 transitions, 4307 flow [2024-05-12 12:47:08,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 327 transitions, 4092 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-05-12 12:47:08,298 INFO L231 Difference]: Finished difference. Result has 362 places, 298 transitions, 3473 flow [2024-05-12 12:47:08,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3278, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3473, PETRI_PLACES=362, PETRI_TRANSITIONS=298} [2024-05-12 12:47:08,298 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2024-05-12 12:47:08,299 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 298 transitions, 3473 flow [2024-05-12 12:47:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:08,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:08,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:08,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-05-12 12:47:08,299 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:08,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1038311678, now seen corresponding path program 20 times [2024-05-12 12:47:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024940789] [2024-05-12 12:47:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:11,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:11,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024940789] [2024-05-12 12:47:11,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024940789] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:11,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:11,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:47:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012904587] [2024-05-12 12:47:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:47:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:11,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:47:11,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:47:11,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:11,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 298 transitions, 3473 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:11,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:11,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:11,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:12,443 INFO L124 PetriNetUnfolderBase]: 2095/3820 cut-off events. [2024-05-12 12:47:12,443 INFO L125 PetriNetUnfolderBase]: For 174682/174685 co-relation queries the response was YES. [2024-05-12 12:47:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21823 conditions, 3820 events. 2095/3820 cut-off events. For 174682/174685 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24505 event pairs, 555 based on Foata normal form. 2/3591 useless extension candidates. Maximal degree in co-relation 21638. Up to 3275 conditions per place. [2024-05-12 12:47:12,495 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 297 selfloop transitions, 29 changer transitions 0/333 dead transitions. [2024-05-12 12:47:12,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 333 transitions, 4425 flow [2024-05-12 12:47:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 12:47:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 12:47:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-05-12 12:47:12,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975 [2024-05-12 12:47:12,496 INFO L175 Difference]: Start difference. First operand has 362 places, 298 transitions, 3473 flow. Second operand 10 states and 159 transitions. [2024-05-12 12:47:12,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 333 transitions, 4425 flow [2024-05-12 12:47:13,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 333 transitions, 4246 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-05-12 12:47:13,703 INFO L231 Difference]: Finished difference. Result has 363 places, 299 transitions, 3416 flow [2024-05-12 12:47:13,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3416, PETRI_PLACES=363, PETRI_TRANSITIONS=299} [2024-05-12 12:47:13,704 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 319 predicate places. [2024-05-12 12:47:13,704 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 299 transitions, 3416 flow [2024-05-12 12:47:13,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:13,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:13,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:13,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-05-12 12:47:13,704 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:13,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:13,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1031636510, now seen corresponding path program 17 times [2024-05-12 12:47:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:13,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085815411] [2024-05-12 12:47:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:13,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:17,886 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 12:47:17,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:17,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085815411] [2024-05-12 12:47:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085815411] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:17,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:47:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769686960] [2024-05-12 12:47:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:17,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:47:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:47:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:47:17,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:17,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 299 transitions, 3416 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:17,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:17,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:17,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:19,373 INFO L124 PetriNetUnfolderBase]: 2091/3820 cut-off events. [2024-05-12 12:47:19,373 INFO L125 PetriNetUnfolderBase]: For 160205/160208 co-relation queries the response was YES. [2024-05-12 12:47:19,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21234 conditions, 3820 events. 2091/3820 cut-off events. For 160205/160208 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 24514 event pairs, 582 based on Foata normal form. 2/3588 useless extension candidates. Maximal degree in co-relation 21048. Up to 3298 conditions per place. [2024-05-12 12:47:19,421 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 287 selfloop transitions, 33 changer transitions 0/327 dead transitions. [2024-05-12 12:47:19,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 327 transitions, 4136 flow [2024-05-12 12:47:19,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:19,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-05-12 12:47:19,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-05-12 12:47:19,422 INFO L175 Difference]: Start difference. First operand has 363 places, 299 transitions, 3416 flow. Second operand 11 states and 165 transitions. [2024-05-12 12:47:19,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 327 transitions, 4136 flow [2024-05-12 12:47:20,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 327 transitions, 4010 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-05-12 12:47:20,555 INFO L231 Difference]: Finished difference. Result has 366 places, 299 transitions, 3361 flow [2024-05-12 12:47:20,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3290, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3361, PETRI_PLACES=366, PETRI_TRANSITIONS=299} [2024-05-12 12:47:20,555 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 322 predicate places. [2024-05-12 12:47:20,555 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 299 transitions, 3361 flow [2024-05-12 12:47:20,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:47:20,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:20,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-05-12 12:47:20,556 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:20,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -451254833, now seen corresponding path program 1 times [2024-05-12 12:47:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268190570] [2024-05-12 12:47:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:23,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:23,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268190570] [2024-05-12 12:47:23,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268190570] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:23,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:23,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:47:23,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611107063] [2024-05-12 12:47:23,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:23,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:47:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:23,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:47:23,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:47:23,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:23,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 299 transitions, 3361 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:23,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:23,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:23,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:25,478 INFO L124 PetriNetUnfolderBase]: 2111/3851 cut-off events. [2024-05-12 12:47:25,478 INFO L125 PetriNetUnfolderBase]: For 156891/156891 co-relation queries the response was YES. [2024-05-12 12:47:25,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21185 conditions, 3851 events. 2111/3851 cut-off events. For 156891/156891 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24746 event pairs, 526 based on Foata normal form. 2/3644 useless extension candidates. Maximal degree in co-relation 20998. Up to 3267 conditions per place. [2024-05-12 12:47:25,524 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 311 selfloop transitions, 27 changer transitions 0/345 dead transitions. [2024-05-12 12:47:25,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 345 transitions, 4417 flow [2024-05-12 12:47:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 12:47:25,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-05-12 12:47:25,525 INFO L175 Difference]: Start difference. First operand has 366 places, 299 transitions, 3361 flow. Second operand 11 states and 175 transitions. [2024-05-12 12:47:25,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 345 transitions, 4417 flow [2024-05-12 12:47:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 345 transitions, 4214 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-05-12 12:47:26,637 INFO L231 Difference]: Finished difference. Result has 367 places, 301 transitions, 3309 flow [2024-05-12 12:47:26,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3158, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3309, PETRI_PLACES=367, PETRI_TRANSITIONS=301} [2024-05-12 12:47:26,637 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2024-05-12 12:47:26,637 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 301 transitions, 3309 flow [2024-05-12 12:47:26,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:26,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:26,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-05-12 12:47:26,638 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:26,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1640657809, now seen corresponding path program 2 times [2024-05-12 12:47:26,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:26,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872427516] [2024-05-12 12:47:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:26,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:30,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:30,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:30,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872427516] [2024-05-12 12:47:30,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872427516] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:30,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:30,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:47:30,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448554897] [2024-05-12 12:47:30,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:47:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:47:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:47:30,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:30,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 301 transitions, 3309 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:30,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:30,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:30,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:32,343 INFO L124 PetriNetUnfolderBase]: 2127/3891 cut-off events. [2024-05-12 12:47:32,343 INFO L125 PetriNetUnfolderBase]: For 160567/160567 co-relation queries the response was YES. [2024-05-12 12:47:32,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21370 conditions, 3891 events. 2127/3891 cut-off events. For 160567/160567 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25153 event pairs, 646 based on Foata normal form. 2/3661 useless extension candidates. Maximal degree in co-relation 21182. Up to 3416 conditions per place. [2024-05-12 12:47:32,399 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 303 selfloop transitions, 26 changer transitions 0/336 dead transitions. [2024-05-12 12:47:32,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 336 transitions, 4173 flow [2024-05-12 12:47:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-05-12 12:47:32,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37727272727272726 [2024-05-12 12:47:32,400 INFO L175 Difference]: Start difference. First operand has 367 places, 301 transitions, 3309 flow. Second operand 11 states and 166 transitions. [2024-05-12 12:47:32,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 336 transitions, 4173 flow [2024-05-12 12:47:33,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 336 transitions, 4025 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-05-12 12:47:33,544 INFO L231 Difference]: Finished difference. Result has 368 places, 303 transitions, 3314 flow [2024-05-12 12:47:33,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3314, PETRI_PLACES=368, PETRI_TRANSITIONS=303} [2024-05-12 12:47:33,544 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 324 predicate places. [2024-05-12 12:47:33,544 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 303 transitions, 3314 flow [2024-05-12 12:47:33,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:33,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:33,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:33,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-05-12 12:47:33,544 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:33,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1640650369, now seen corresponding path program 3 times [2024-05-12 12:47:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196653851] [2024-05-12 12:47:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:33,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:36,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:36,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196653851] [2024-05-12 12:47:36,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196653851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:36,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:36,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:47:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679863370] [2024-05-12 12:47:37,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:37,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:47:37,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:37,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:47:37,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:47:37,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:37,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 303 transitions, 3314 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:37,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:37,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:37,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:38,564 INFO L124 PetriNetUnfolderBase]: 2147/3927 cut-off events. [2024-05-12 12:47:38,564 INFO L125 PetriNetUnfolderBase]: For 166876/166876 co-relation queries the response was YES. [2024-05-12 12:47:38,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21532 conditions, 3927 events. 2147/3927 cut-off events. For 166876/166876 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 25454 event pairs, 646 based on Foata normal form. 2/3697 useless extension candidates. Maximal degree in co-relation 21344. Up to 3425 conditions per place. [2024-05-12 12:47:38,617 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 311 selfloop transitions, 25 changer transitions 0/343 dead transitions. [2024-05-12 12:47:38,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 343 transitions, 4284 flow [2024-05-12 12:47:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:38,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-05-12 12:47:38,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-05-12 12:47:38,618 INFO L175 Difference]: Start difference. First operand has 368 places, 303 transitions, 3314 flow. Second operand 11 states and 170 transitions. [2024-05-12 12:47:38,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 343 transitions, 4284 flow [2024-05-12 12:47:39,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 343 transitions, 4147 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-05-12 12:47:39,641 INFO L231 Difference]: Finished difference. Result has 370 places, 305 transitions, 3332 flow [2024-05-12 12:47:39,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3177, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3332, PETRI_PLACES=370, PETRI_TRANSITIONS=305} [2024-05-12 12:47:39,642 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 326 predicate places. [2024-05-12 12:47:39,642 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 305 transitions, 3332 flow [2024-05-12 12:47:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:39,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:39,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:39,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-05-12 12:47:39,642 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:39,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 37527019, now seen corresponding path program 4 times [2024-05-12 12:47:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856348834] [2024-05-12 12:47:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:43,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856348834] [2024-05-12 12:47:43,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856348834] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:43,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:43,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:47:43,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297137178] [2024-05-12 12:47:43,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:43,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:47:43,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:43,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:47:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:47:43,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:43,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 305 transitions, 3332 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:43,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:43,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:43,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:44,759 INFO L124 PetriNetUnfolderBase]: 2171/3983 cut-off events. [2024-05-12 12:47:44,759 INFO L125 PetriNetUnfolderBase]: For 173810/173810 co-relation queries the response was YES. [2024-05-12 12:47:44,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21989 conditions, 3983 events. 2171/3983 cut-off events. For 173810/173810 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 25915 event pairs, 650 based on Foata normal form. 2/3749 useless extension candidates. Maximal degree in co-relation 21800. Up to 3446 conditions per place. [2024-05-12 12:47:44,810 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 315 selfloop transitions, 26 changer transitions 0/348 dead transitions. [2024-05-12 12:47:44,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 348 transitions, 4334 flow [2024-05-12 12:47:44,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 12:47:44,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-05-12 12:47:44,811 INFO L175 Difference]: Start difference. First operand has 370 places, 305 transitions, 3332 flow. Second operand 11 states and 173 transitions. [2024-05-12 12:47:44,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 348 transitions, 4334 flow [2024-05-12 12:47:46,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 348 transitions, 4195 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-05-12 12:47:46,016 INFO L231 Difference]: Finished difference. Result has 373 places, 308 transitions, 3421 flow [2024-05-12 12:47:46,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3421, PETRI_PLACES=373, PETRI_TRANSITIONS=308} [2024-05-12 12:47:46,017 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 329 predicate places. [2024-05-12 12:47:46,017 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 308 transitions, 3421 flow [2024-05-12 12:47:46,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:46,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:46,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:46,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-05-12 12:47:46,017 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:46,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1635086179, now seen corresponding path program 5 times [2024-05-12 12:47:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825107703] [2024-05-12 12:47:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:49,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825107703] [2024-05-12 12:47:49,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825107703] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:49,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:49,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:47:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739290286] [2024-05-12 12:47:49,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:49,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:47:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:49,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:47:49,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:47:49,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:49,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 308 transitions, 3421 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:49,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:49,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:49,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:51,056 INFO L124 PetriNetUnfolderBase]: 2191/4014 cut-off events. [2024-05-12 12:47:51,056 INFO L125 PetriNetUnfolderBase]: For 179188/179188 co-relation queries the response was YES. [2024-05-12 12:47:51,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22273 conditions, 4014 events. 2191/4014 cut-off events. For 179188/179188 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 26191 event pairs, 643 based on Foata normal form. 2/3781 useless extension candidates. Maximal degree in co-relation 22082. Up to 3474 conditions per place. [2024-05-12 12:47:51,110 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 322 selfloop transitions, 24 changer transitions 0/353 dead transitions. [2024-05-12 12:47:51,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 353 transitions, 4519 flow [2024-05-12 12:47:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:47:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:47:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 12:47:51,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-05-12 12:47:51,111 INFO L175 Difference]: Start difference. First operand has 373 places, 308 transitions, 3421 flow. Second operand 11 states and 174 transitions. [2024-05-12 12:47:51,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 353 transitions, 4519 flow [2024-05-12 12:47:52,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 353 transitions, 4323 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-05-12 12:47:52,453 INFO L231 Difference]: Finished difference. Result has 376 places, 310 transitions, 3386 flow [2024-05-12 12:47:52,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3225, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3386, PETRI_PLACES=376, PETRI_TRANSITIONS=310} [2024-05-12 12:47:52,454 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 332 predicate places. [2024-05-12 12:47:52,454 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 310 transitions, 3386 flow [2024-05-12 12:47:52,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:47:52,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:47:52,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:47:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-05-12 12:47:52,454 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:47:52,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:47:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash 112374469, now seen corresponding path program 1 times [2024-05-12 12:47:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:47:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10290588] [2024-05-12 12:47:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:47:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:47:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:47:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:47:56,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:47:56,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10290588] [2024-05-12 12:47:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10290588] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:47:56,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:47:56,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:47:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318924155] [2024-05-12 12:47:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:47:56,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:47:56,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:47:56,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:47:56,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:47:57,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:47:57,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 310 transitions, 3386 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:47:57,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:47:57,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:47:57,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:47:58,933 INFO L124 PetriNetUnfolderBase]: 2259/4155 cut-off events. [2024-05-12 12:47:58,933 INFO L125 PetriNetUnfolderBase]: For 252965/252965 co-relation queries the response was YES. [2024-05-12 12:47:58,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22836 conditions, 4155 events. 2259/4155 cut-off events. For 252965/252965 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 27441 event pairs, 726 based on Foata normal form. 10/3928 useless extension candidates. Maximal degree in co-relation 22644. Up to 3505 conditions per place. [2024-05-12 12:47:58,994 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 316 selfloop transitions, 28 changer transitions 0/351 dead transitions. [2024-05-12 12:47:58,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 351 transitions, 4298 flow [2024-05-12 12:47:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:47:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:47:58,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-05-12 12:47:58,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-05-12 12:47:58,996 INFO L175 Difference]: Start difference. First operand has 376 places, 310 transitions, 3386 flow. Second operand 12 states and 183 transitions. [2024-05-12 12:47:58,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 351 transitions, 4298 flow [2024-05-12 12:48:00,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 351 transitions, 4153 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:00,186 INFO L231 Difference]: Finished difference. Result has 379 places, 311 transitions, 3376 flow [2024-05-12 12:48:00,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3241, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3376, PETRI_PLACES=379, PETRI_TRANSITIONS=311} [2024-05-12 12:48:00,186 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2024-05-12 12:48:00,186 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 311 transitions, 3376 flow [2024-05-12 12:48:00,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:00,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:00,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-05-12 12:48:00,187 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:00,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1827570509, now seen corresponding path program 6 times [2024-05-12 12:48:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151455824] [2024-05-12 12:48:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:48:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151455824] [2024-05-12 12:48:04,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151455824] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:04,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:04,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:04,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344621736] [2024-05-12 12:48:04,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:04,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:04,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:04,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 311 transitions, 3376 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:04,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:04,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:04,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:05,787 INFO L124 PetriNetUnfolderBase]: 2275/4183 cut-off events. [2024-05-12 12:48:05,787 INFO L125 PetriNetUnfolderBase]: For 190249/190249 co-relation queries the response was YES. [2024-05-12 12:48:05,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22960 conditions, 4183 events. 2275/4183 cut-off events. For 190249/190249 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27680 event pairs, 680 based on Foata normal form. 2/3944 useless extension candidates. Maximal degree in co-relation 22767. Up to 3483 conditions per place. [2024-05-12 12:48:05,842 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 286 selfloop transitions, 54 changer transitions 0/347 dead transitions. [2024-05-12 12:48:05,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 347 transitions, 4280 flow [2024-05-12 12:48:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:48:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:48:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 12:48:05,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-05-12 12:48:05,844 INFO L175 Difference]: Start difference. First operand has 379 places, 311 transitions, 3376 flow. Second operand 11 states and 173 transitions. [2024-05-12 12:48:05,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 347 transitions, 4280 flow [2024-05-12 12:48:07,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 347 transitions, 4165 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-05-12 12:48:07,062 INFO L231 Difference]: Finished difference. Result has 380 places, 313 transitions, 3488 flow [2024-05-12 12:48:07,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3488, PETRI_PLACES=380, PETRI_TRANSITIONS=313} [2024-05-12 12:48:07,062 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-05-12 12:48:07,062 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 313 transitions, 3488 flow [2024-05-12 12:48:07,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:07,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:07,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:07,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-05-12 12:48:07,063 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:07,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1827232299, now seen corresponding path program 2 times [2024-05-12 12:48:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:07,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453597921] [2024-05-12 12:48:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:48:11,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453597921] [2024-05-12 12:48:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453597921] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:11,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:11,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144762539] [2024-05-12 12:48:11,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:11,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:11,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:11,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:11,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:11,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 313 transitions, 3488 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:11,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:11,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:11,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:13,264 INFO L124 PetriNetUnfolderBase]: 2503/4702 cut-off events. [2024-05-12 12:48:13,264 INFO L125 PetriNetUnfolderBase]: For 364084/364084 co-relation queries the response was YES. [2024-05-12 12:48:13,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27279 conditions, 4702 events. 2503/4702 cut-off events. For 364084/364084 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32417 event pairs, 790 based on Foata normal form. 8/4453 useless extension candidates. Maximal degree in co-relation 27085. Up to 3147 conditions per place. [2024-05-12 12:48:13,328 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 292 selfloop transitions, 70 changer transitions 0/369 dead transitions. [2024-05-12 12:48:13,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 369 transitions, 4944 flow [2024-05-12 12:48:13,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:48:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:48:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-05-12 12:48:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-05-12 12:48:13,329 INFO L175 Difference]: Start difference. First operand has 380 places, 313 transitions, 3488 flow. Second operand 12 states and 201 transitions. [2024-05-12 12:48:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 369 transitions, 4944 flow [2024-05-12 12:48:15,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 369 transitions, 4733 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:15,190 INFO L231 Difference]: Finished difference. Result has 384 places, 315 transitions, 3547 flow [2024-05-12 12:48:15,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3547, PETRI_PLACES=384, PETRI_TRANSITIONS=315} [2024-05-12 12:48:15,190 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 340 predicate places. [2024-05-12 12:48:15,191 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 315 transitions, 3547 flow [2024-05-12 12:48:15,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:15,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:15,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-05-12 12:48:15,191 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:15,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash 61222489, now seen corresponding path program 7 times [2024-05-12 12:48:15,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:15,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098308829] [2024-05-12 12:48:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:15,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:18,882 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 12:48:18,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:18,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098308829] [2024-05-12 12:48:18,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098308829] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:18,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:18,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:18,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611107565] [2024-05-12 12:48:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:18,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:18,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:19,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:19,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 315 transitions, 3547 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:19,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:19,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:20,772 INFO L124 PetriNetUnfolderBase]: 2519/4731 cut-off events. [2024-05-12 12:48:20,772 INFO L125 PetriNetUnfolderBase]: For 317838/317838 co-relation queries the response was YES. [2024-05-12 12:48:20,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27649 conditions, 4731 events. 2519/4731 cut-off events. For 317838/317838 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 32744 event pairs, 868 based on Foata normal form. 2/4464 useless extension candidates. Maximal degree in co-relation 27453. Up to 4025 conditions per place. [2024-05-12 12:48:20,831 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 299 selfloop transitions, 44 changer transitions 0/350 dead transitions. [2024-05-12 12:48:20,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 350 transitions, 4460 flow [2024-05-12 12:48:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:48:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:48:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 12:48:20,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636 [2024-05-12 12:48:20,832 INFO L175 Difference]: Start difference. First operand has 384 places, 315 transitions, 3547 flow. Second operand 11 states and 171 transitions. [2024-05-12 12:48:20,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 350 transitions, 4460 flow [2024-05-12 12:48:22,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 350 transitions, 4317 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:22,564 INFO L231 Difference]: Finished difference. Result has 386 places, 317 transitions, 3618 flow [2024-05-12 12:48:22,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3618, PETRI_PLACES=386, PETRI_TRANSITIONS=317} [2024-05-12 12:48:22,564 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 342 predicate places. [2024-05-12 12:48:22,564 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 317 transitions, 3618 flow [2024-05-12 12:48:22,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:22,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:22,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:22,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-05-12 12:48:22,565 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:22,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2085858479, now seen corresponding path program 8 times [2024-05-12 12:48:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450184659] [2024-05-12 12:48:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:26,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:48:26,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:26,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450184659] [2024-05-12 12:48:26,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450184659] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:26,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:26,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:26,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48645273] [2024-05-12 12:48:26,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:26,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:26,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:26,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:26,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:26,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:26,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 317 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:26,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:26,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:26,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:28,718 INFO L124 PetriNetUnfolderBase]: 2535/4760 cut-off events. [2024-05-12 12:48:28,719 INFO L125 PetriNetUnfolderBase]: For 324848/324848 co-relation queries the response was YES. [2024-05-12 12:48:28,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27903 conditions, 4760 events. 2535/4760 cut-off events. For 324848/324848 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 32978 event pairs, 873 based on Foata normal form. 2/4492 useless extension candidates. Maximal degree in co-relation 27706. Up to 4110 conditions per place. [2024-05-12 12:48:28,784 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 308 selfloop transitions, 36 changer transitions 0/351 dead transitions. [2024-05-12 12:48:28,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 351 transitions, 4522 flow [2024-05-12 12:48:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:48:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:48:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-05-12 12:48:28,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3840909090909091 [2024-05-12 12:48:28,786 INFO L175 Difference]: Start difference. First operand has 386 places, 317 transitions, 3618 flow. Second operand 11 states and 169 transitions. [2024-05-12 12:48:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 351 transitions, 4522 flow [2024-05-12 12:48:30,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 351 transitions, 4337 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:30,670 INFO L231 Difference]: Finished difference. Result has 388 places, 319 transitions, 3624 flow [2024-05-12 12:48:30,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3433, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3624, PETRI_PLACES=388, PETRI_TRANSITIONS=319} [2024-05-12 12:48:30,670 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2024-05-12 12:48:30,670 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 319 transitions, 3624 flow [2024-05-12 12:48:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-05-12 12:48:30,671 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2093275229, now seen corresponding path program 9 times [2024-05-12 12:48:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402337542] [2024-05-12 12:48:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:48:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402337542] [2024-05-12 12:48:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402337542] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:34,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398413979] [2024-05-12 12:48:34,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:34,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:34,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:34,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:34,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:34,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:34,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 319 transitions, 3624 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:34,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:34,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:34,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:36,363 INFO L124 PetriNetUnfolderBase]: 2555/4796 cut-off events. [2024-05-12 12:48:36,363 INFO L125 PetriNetUnfolderBase]: For 333256/333256 co-relation queries the response was YES. [2024-05-12 12:48:36,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28259 conditions, 4796 events. 2555/4796 cut-off events. For 333256/333256 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 33228 event pairs, 876 based on Foata normal form. 2/4528 useless extension candidates. Maximal degree in co-relation 28061. Up to 4119 conditions per place. [2024-05-12 12:48:36,427 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 316 selfloop transitions, 35 changer transitions 0/358 dead transitions. [2024-05-12 12:48:36,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 358 transitions, 4654 flow [2024-05-12 12:48:36,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:48:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:48:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 12:48:36,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-05-12 12:48:36,428 INFO L175 Difference]: Start difference. First operand has 388 places, 319 transitions, 3624 flow. Second operand 11 states and 173 transitions. [2024-05-12 12:48:36,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 358 transitions, 4654 flow [2024-05-12 12:48:38,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 358 transitions, 4481 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:38,413 INFO L231 Difference]: Finished difference. Result has 390 places, 321 transitions, 3650 flow [2024-05-12 12:48:38,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3451, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3650, PETRI_PLACES=390, PETRI_TRANSITIONS=321} [2024-05-12 12:48:38,413 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 346 predicate places. [2024-05-12 12:48:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 321 transitions, 3650 flow [2024-05-12 12:48:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:38,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:38,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-05-12 12:48:38,414 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -651193941, now seen corresponding path program 10 times [2024-05-12 12:48:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553960237] [2024-05-12 12:48:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:42,240 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 12:48:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553960237] [2024-05-12 12:48:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553960237] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:42,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:42,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100954689] [2024-05-12 12:48:42,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:42,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:42,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 321 transitions, 3650 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:42,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:42,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:42,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:44,281 INFO L124 PetriNetUnfolderBase]: 2575/4832 cut-off events. [2024-05-12 12:48:44,281 INFO L125 PetriNetUnfolderBase]: For 342354/342354 co-relation queries the response was YES. [2024-05-12 12:48:44,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28672 conditions, 4832 events. 2575/4832 cut-off events. For 342354/342354 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 33552 event pairs, 877 based on Foata normal form. 2/4564 useless extension candidates. Maximal degree in co-relation 28473. Up to 4132 conditions per place. [2024-05-12 12:48:44,356 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 323 selfloop transitions, 34 changer transitions 0/364 dead transitions. [2024-05-12 12:48:44,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 364 transitions, 4800 flow [2024-05-12 12:48:44,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:48:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:48:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-05-12 12:48:44,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:48:44,357 INFO L175 Difference]: Start difference. First operand has 390 places, 321 transitions, 3650 flow. Second operand 11 states and 176 transitions. [2024-05-12 12:48:44,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 364 transitions, 4800 flow [2024-05-12 12:48:46,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 364 transitions, 4617 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:46,408 INFO L231 Difference]: Finished difference. Result has 392 places, 323 transitions, 3668 flow [2024-05-12 12:48:46,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3668, PETRI_PLACES=392, PETRI_TRANSITIONS=323} [2024-05-12 12:48:46,409 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 348 predicate places. [2024-05-12 12:48:46,409 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 323 transitions, 3668 flow [2024-05-12 12:48:46,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:46,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:46,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:46,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-05-12 12:48:46,409 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:46,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1673888935, now seen corresponding path program 3 times [2024-05-12 12:48:46,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:46,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45180266] [2024-05-12 12:48:46,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:46,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:50,461 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 12:48:50,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:50,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45180266] [2024-05-12 12:48:50,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45180266] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:50,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:50,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:50,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19190379] [2024-05-12 12:48:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:50,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:50,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:50,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 323 transitions, 3668 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:50,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:50,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:50,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:48:52,763 INFO L124 PetriNetUnfolderBase]: 2643/4975 cut-off events. [2024-05-12 12:48:52,764 INFO L125 PetriNetUnfolderBase]: For 429248/429248 co-relation queries the response was YES. [2024-05-12 12:48:52,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29355 conditions, 4975 events. 2643/4975 cut-off events. For 429248/429248 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 34875 event pairs, 927 based on Foata normal form. 10/4711 useless extension candidates. Maximal degree in co-relation 29155. Up to 4167 conditions per place. [2024-05-12 12:48:52,833 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 317 selfloop transitions, 39 changer transitions 0/363 dead transitions. [2024-05-12 12:48:52,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 363 transitions, 4608 flow [2024-05-12 12:48:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:48:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:48:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-05-12 12:48:52,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-05-12 12:48:52,834 INFO L175 Difference]: Start difference. First operand has 392 places, 323 transitions, 3668 flow. Second operand 12 states and 186 transitions. [2024-05-12 12:48:52,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 363 transitions, 4608 flow [2024-05-12 12:48:54,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 363 transitions, 4423 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-05-12 12:48:54,912 INFO L231 Difference]: Finished difference. Result has 395 places, 324 transitions, 3653 flow [2024-05-12 12:48:54,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3653, PETRI_PLACES=395, PETRI_TRANSITIONS=324} [2024-05-12 12:48:54,913 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 351 predicate places. [2024-05-12 12:48:54,913 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 324 transitions, 3653 flow [2024-05-12 12:48:54,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:54,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:48:54,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:48:54,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-05-12 12:48:54,913 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:48:54,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:48:54,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1922962775, now seen corresponding path program 11 times [2024-05-12 12:48:54,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:48:54,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550806068] [2024-05-12 12:48:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:48:54,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:48:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:48:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:48:58,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:48:58,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550806068] [2024-05-12 12:48:58,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550806068] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:48:58,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:48:58,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:48:58,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592718175] [2024-05-12 12:48:58,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:48:58,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:48:58,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:48:58,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:48:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:48:58,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:48:58,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 324 transitions, 3653 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:48:58,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:48:58,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:48:58,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:00,538 INFO L124 PetriNetUnfolderBase]: 2663/5011 cut-off events. [2024-05-12 12:49:00,538 INFO L125 PetriNetUnfolderBase]: For 362167/362167 co-relation queries the response was YES. [2024-05-12 12:49:00,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29624 conditions, 5011 events. 2663/5011 cut-off events. For 362167/362167 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 35216 event pairs, 939 based on Foata normal form. 2/4736 useless extension candidates. Maximal degree in co-relation 29423. Up to 4262 conditions per place. [2024-05-12 12:49:00,610 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 314 selfloop transitions, 43 changer transitions 0/364 dead transitions. [2024-05-12 12:49:00,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 364 transitions, 4715 flow [2024-05-12 12:49:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:49:00,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:49:00,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 12:49:00,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-05-12 12:49:00,611 INFO L175 Difference]: Start difference. First operand has 395 places, 324 transitions, 3653 flow. Second operand 11 states and 175 transitions. [2024-05-12 12:49:00,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 364 transitions, 4715 flow [2024-05-12 12:49:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 364 transitions, 4567 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-05-12 12:49:03,013 INFO L231 Difference]: Finished difference. Result has 396 places, 326 transitions, 3730 flow [2024-05-12 12:49:03,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3505, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3730, PETRI_PLACES=396, PETRI_TRANSITIONS=326} [2024-05-12 12:49:03,013 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 352 predicate places. [2024-05-12 12:49:03,013 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 326 transitions, 3730 flow [2024-05-12 12:49:03,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:03,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:03,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:03,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-05-12 12:49:03,013 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:03,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1932494035, now seen corresponding path program 4 times [2024-05-12 12:49:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:03,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065802837] [2024-05-12 12:49:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:49:07,219 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 12:49:07,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:49:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065802837] [2024-05-12 12:49:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065802837] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:49:07,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:49:07,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:49:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031120401] [2024-05-12 12:49:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:49:07,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:49:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:49:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:49:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:49:07,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:49:07,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 326 transitions, 3730 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:07,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:49:07,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:49:07,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:09,510 INFO L124 PetriNetUnfolderBase]: 2747/5212 cut-off events. [2024-05-12 12:49:09,510 INFO L125 PetriNetUnfolderBase]: For 448871/448871 co-relation queries the response was YES. [2024-05-12 12:49:09,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30504 conditions, 5212 events. 2747/5212 cut-off events. For 448871/448871 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37171 event pairs, 980 based on Foata normal form. 10/4932 useless extension candidates. Maximal degree in co-relation 30302. Up to 4129 conditions per place. [2024-05-12 12:49:09,580 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 297 selfloop transitions, 66 changer transitions 0/370 dead transitions. [2024-05-12 12:49:09,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 370 transitions, 4702 flow [2024-05-12 12:49:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:49:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:49:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-05-12 12:49:09,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:49:09,581 INFO L175 Difference]: Start difference. First operand has 396 places, 326 transitions, 3730 flow. Second operand 12 states and 192 transitions. [2024-05-12 12:49:09,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 370 transitions, 4702 flow [2024-05-12 12:49:11,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 370 transitions, 4493 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-05-12 12:49:11,975 INFO L231 Difference]: Finished difference. Result has 399 places, 326 transitions, 3657 flow [2024-05-12 12:49:11,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3657, PETRI_PLACES=399, PETRI_TRANSITIONS=326} [2024-05-12 12:49:11,976 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 355 predicate places. [2024-05-12 12:49:11,976 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 326 transitions, 3657 flow [2024-05-12 12:49:11,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:11,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:11,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:11,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-05-12 12:49:11,976 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:11,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash -394214791, now seen corresponding path program 5 times [2024-05-12 12:49:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:11,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610473213] [2024-05-12 12:49:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:49:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:49:16,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:49:16,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610473213] [2024-05-12 12:49:16,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610473213] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:49:16,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:49:16,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:49:16,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130584821] [2024-05-12 12:49:16,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:49:16,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:49:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:49:16,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:49:16,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:49:16,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:49:16,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 326 transitions, 3657 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:16,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:49:16,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:49:16,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:18,929 INFO L124 PetriNetUnfolderBase]: 2815/5345 cut-off events. [2024-05-12 12:49:18,930 INFO L125 PetriNetUnfolderBase]: For 457613/457613 co-relation queries the response was YES. [2024-05-12 12:49:18,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31140 conditions, 5345 events. 2815/5345 cut-off events. For 457613/457613 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 38422 event pairs, 1036 based on Foata normal form. 10/5062 useless extension candidates. Maximal degree in co-relation 30937. Up to 4456 conditions per place. [2024-05-12 12:49:18,999 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 315 selfloop transitions, 45 changer transitions 0/367 dead transitions. [2024-05-12 12:49:18,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 367 transitions, 4613 flow [2024-05-12 12:49:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:49:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:49:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-05-12 12:49:19,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38958333333333334 [2024-05-12 12:49:19,000 INFO L175 Difference]: Start difference. First operand has 399 places, 326 transitions, 3657 flow. Second operand 12 states and 187 transitions. [2024-05-12 12:49:19,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 367 transitions, 4613 flow [2024-05-12 12:49:21,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 367 transitions, 4483 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-05-12 12:49:21,353 INFO L231 Difference]: Finished difference. Result has 401 places, 327 transitions, 3710 flow [2024-05-12 12:49:21,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3710, PETRI_PLACES=401, PETRI_TRANSITIONS=327} [2024-05-12 12:49:21,353 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 357 predicate places. [2024-05-12 12:49:21,353 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 327 transitions, 3710 flow [2024-05-12 12:49:21,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:21,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:21,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:21,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-05-12 12:49:21,354 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:21,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:21,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1932176905, now seen corresponding path program 6 times [2024-05-12 12:49:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:21,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786738041] [2024-05-12 12:49:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:49:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:49:26,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:49:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786738041] [2024-05-12 12:49:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786738041] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:49:26,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:49:26,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:49:26,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292743400] [2024-05-12 12:49:26,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:49:26,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:49:26,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:49:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:49:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:49:26,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:49:26,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 327 transitions, 3710 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:26,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:49:26,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:49:26,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:29,132 INFO L124 PetriNetUnfolderBase]: 2883/5476 cut-off events. [2024-05-12 12:49:29,132 INFO L125 PetriNetUnfolderBase]: For 477069/477069 co-relation queries the response was YES. [2024-05-12 12:49:29,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32100 conditions, 5476 events. 2883/5476 cut-off events. For 477069/477069 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 39678 event pairs, 1054 based on Foata normal form. 10/5190 useless extension candidates. Maximal degree in co-relation 31896. Up to 4514 conditions per place. [2024-05-12 12:49:29,207 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 307 selfloop transitions, 55 changer transitions 0/369 dead transitions. [2024-05-12 12:49:29,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 369 transitions, 4676 flow [2024-05-12 12:49:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:49:29,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:49:29,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-05-12 12:49:29,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-05-12 12:49:29,209 INFO L175 Difference]: Start difference. First operand has 401 places, 327 transitions, 3710 flow. Second operand 12 states and 189 transitions. [2024-05-12 12:49:29,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 369 transitions, 4676 flow [2024-05-12 12:49:32,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 369 transitions, 4507 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-05-12 12:49:32,031 INFO L231 Difference]: Finished difference. Result has 403 places, 328 transitions, 3746 flow [2024-05-12 12:49:32,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3541, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3746, PETRI_PLACES=403, PETRI_TRANSITIONS=328} [2024-05-12 12:49:32,032 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 359 predicate places. [2024-05-12 12:49:32,032 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 328 transitions, 3746 flow [2024-05-12 12:49:32,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:32,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:32,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-05-12 12:49:32,032 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:32,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash -568268847, now seen corresponding path program 12 times [2024-05-12 12:49:32,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916012863] [2024-05-12 12:49:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:49:35,608 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 12:49:35,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:49:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916012863] [2024-05-12 12:49:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916012863] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:49:35,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:49:35,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:49:35,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730001488] [2024-05-12 12:49:35,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:49:35,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:49:35,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:49:35,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:49:35,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:49:35,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:49:35,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 328 transitions, 3746 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:35,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:49:35,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:49:35,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:37,598 INFO L124 PetriNetUnfolderBase]: 2880/5471 cut-off events. [2024-05-12 12:49:37,598 INFO L125 PetriNetUnfolderBase]: For 376834/376834 co-relation queries the response was YES. [2024-05-12 12:49:37,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31554 conditions, 5471 events. 2880/5471 cut-off events. For 376834/376834 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 39612 event pairs, 1083 based on Foata normal form. 2/5175 useless extension candidates. Maximal degree in co-relation 31349. Up to 4805 conditions per place. [2024-05-12 12:49:37,681 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 324 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-05-12 12:49:37,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 361 transitions, 4682 flow [2024-05-12 12:49:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:49:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:49:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-05-12 12:49:37,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3795454545454545 [2024-05-12 12:49:37,682 INFO L175 Difference]: Start difference. First operand has 403 places, 328 transitions, 3746 flow. Second operand 11 states and 167 transitions. [2024-05-12 12:49:37,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 361 transitions, 4682 flow [2024-05-12 12:49:40,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 361 transitions, 4491 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-05-12 12:49:40,750 INFO L231 Difference]: Finished difference. Result has 404 places, 330 transitions, 3750 flow [2024-05-12 12:49:40,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3750, PETRI_PLACES=404, PETRI_TRANSITIONS=330} [2024-05-12 12:49:40,750 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2024-05-12 12:49:40,750 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 330 transitions, 3750 flow [2024-05-12 12:49:40,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:40,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:40,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:40,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-05-12 12:49:40,751 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:40,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -568276287, now seen corresponding path program 13 times [2024-05-12 12:49:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:40,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562533363] [2024-05-12 12:49:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:40,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:49:44,554 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 12:49:44,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:49:44,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562533363] [2024-05-12 12:49:44,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562533363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:49:44,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:49:44,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:49:44,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032024105] [2024-05-12 12:49:44,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:49:44,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:49:44,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:49:44,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:49:44,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:49:44,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:49:44,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 330 transitions, 3750 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:44,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:49:44,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:49:44,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:46,753 INFO L124 PetriNetUnfolderBase]: 2900/5507 cut-off events. [2024-05-12 12:49:46,753 INFO L125 PetriNetUnfolderBase]: For 380665/380665 co-relation queries the response was YES. [2024-05-12 12:49:46,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31706 conditions, 5507 events. 2900/5507 cut-off events. For 380665/380665 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 39959 event pairs, 1083 based on Foata normal form. 2/5211 useless extension candidates. Maximal degree in co-relation 31500. Up to 4814 conditions per place. [2024-05-12 12:49:46,837 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 332 selfloop transitions, 29 changer transitions 0/368 dead transitions. [2024-05-12 12:49:46,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 368 transitions, 4830 flow [2024-05-12 12:49:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:49:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:49:46,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-05-12 12:49:46,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886363636363636 [2024-05-12 12:49:46,839 INFO L175 Difference]: Start difference. First operand has 404 places, 330 transitions, 3750 flow. Second operand 11 states and 171 transitions. [2024-05-12 12:49:46,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 368 transitions, 4830 flow [2024-05-12 12:49:49,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 368 transitions, 4653 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-05-12 12:49:49,915 INFO L231 Difference]: Finished difference. Result has 406 places, 332 transitions, 3780 flow [2024-05-12 12:49:49,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3780, PETRI_PLACES=406, PETRI_TRANSITIONS=332} [2024-05-12 12:49:49,915 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 362 predicate places. [2024-05-12 12:49:49,915 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 332 transitions, 3780 flow [2024-05-12 12:49:49,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:49,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:49,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-05-12 12:49:49,916 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:49,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash 794281869, now seen corresponding path program 14 times [2024-05-12 12:49:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:49,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924105612] [2024-05-12 12:49:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:49,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:49:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:49:53,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:49:53,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924105612] [2024-05-12 12:49:53,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924105612] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:49:53,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:49:53,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:49:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462606561] [2024-05-12 12:49:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:49:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:49:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:49:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:49:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:49:53,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:49:53,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 332 transitions, 3780 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:53,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:49:53,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:49:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:49:55,458 INFO L124 PetriNetUnfolderBase]: 2920/5549 cut-off events. [2024-05-12 12:49:55,458 INFO L125 PetriNetUnfolderBase]: For 391846/391846 co-relation queries the response was YES. [2024-05-12 12:49:55,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32167 conditions, 5549 events. 2920/5549 cut-off events. For 391846/391846 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 40333 event pairs, 1085 based on Foata normal form. 2/5251 useless extension candidates. Maximal degree in co-relation 31960. Up to 4827 conditions per place. [2024-05-12 12:49:55,547 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 337 selfloop transitions, 29 changer transitions 0/373 dead transitions. [2024-05-12 12:49:55,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 373 transitions, 4898 flow [2024-05-12 12:49:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:49:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:49:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-05-12 12:49:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39545454545454545 [2024-05-12 12:49:55,548 INFO L175 Difference]: Start difference. First operand has 406 places, 332 transitions, 3780 flow. Second operand 11 states and 174 transitions. [2024-05-12 12:49:55,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 373 transitions, 4898 flow [2024-05-12 12:49:58,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 373 transitions, 4707 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-05-12 12:49:58,483 INFO L231 Difference]: Finished difference. Result has 408 places, 334 transitions, 3800 flow [2024-05-12 12:49:58,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3800, PETRI_PLACES=408, PETRI_TRANSITIONS=334} [2024-05-12 12:49:58,483 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 364 predicate places. [2024-05-12 12:49:58,483 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 334 transitions, 3800 flow [2024-05-12 12:49:58,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:49:58,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:49:58,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:49:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-05-12 12:49:58,484 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:49:58,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:49:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -902140009, now seen corresponding path program 7 times [2024-05-12 12:49:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:49:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892374656] [2024-05-12 12:49:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:49:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:49:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:50:02,553 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 12:50:02,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:50:02,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892374656] [2024-05-12 12:50:02,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892374656] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:50:02,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:50:02,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:50:02,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199059991] [2024-05-12 12:50:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:50:02,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:50:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:50:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:50:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:50:02,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:50:02,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 334 transitions, 3800 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:02,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:50:02,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:50:02,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:50:04,745 INFO L124 PetriNetUnfolderBase]: 2907/5532 cut-off events. [2024-05-12 12:50:04,745 INFO L125 PetriNetUnfolderBase]: For 373183/373183 co-relation queries the response was YES. [2024-05-12 12:50:04,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30362 conditions, 5532 events. 2907/5532 cut-off events. For 373183/373183 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 40217 event pairs, 1102 based on Foata normal form. 10/5242 useless extension candidates. Maximal degree in co-relation 30154. Up to 4729 conditions per place. [2024-05-12 12:50:04,831 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 335 selfloop transitions, 31 changer transitions 0/373 dead transitions. [2024-05-12 12:50:04,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 373 transitions, 4770 flow [2024-05-12 12:50:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:50:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:50:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-05-12 12:50:04,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-05-12 12:50:04,832 INFO L175 Difference]: Start difference. First operand has 408 places, 334 transitions, 3800 flow. Second operand 12 states and 183 transitions. [2024-05-12 12:50:04,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 373 transitions, 4770 flow [2024-05-12 12:50:07,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 373 transitions, 4559 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-05-12 12:50:07,235 INFO L231 Difference]: Finished difference. Result has 411 places, 335 transitions, 3754 flow [2024-05-12 12:50:07,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3754, PETRI_PLACES=411, PETRI_TRANSITIONS=335} [2024-05-12 12:50:07,235 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2024-05-12 12:50:07,235 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 335 transitions, 3754 flow [2024-05-12 12:50:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:07,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:50:07,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:50:07,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-05-12 12:50:07,236 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:50:07,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:50:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1109070279, now seen corresponding path program 15 times [2024-05-12 12:50:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:50:07,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987199990] [2024-05-12 12:50:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:50:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:50:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:50:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:50:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:50:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987199990] [2024-05-12 12:50:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987199990] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:50:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:50:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:50:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66408215] [2024-05-12 12:50:11,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:50:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:50:11,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:50:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:50:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:50:11,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:50:11,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 335 transitions, 3754 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:11,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:50:11,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:50:11,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:50:13,537 INFO L124 PetriNetUnfolderBase]: 2927/5569 cut-off events. [2024-05-12 12:50:13,537 INFO L125 PetriNetUnfolderBase]: For 296117/296117 co-relation queries the response was YES. [2024-05-12 12:50:13,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30559 conditions, 5569 events. 2927/5569 cut-off events. For 296117/296117 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40589 event pairs, 1073 based on Foata normal form. 2/5268 useless extension candidates. Maximal degree in co-relation 30350. Up to 4832 conditions per place. [2024-05-12 12:50:13,622 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 341 selfloop transitions, 29 changer transitions 0/377 dead transitions. [2024-05-12 12:50:13,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 377 transitions, 4896 flow [2024-05-12 12:50:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:50:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:50:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-05-12 12:50:13,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-05-12 12:50:13,623 INFO L175 Difference]: Start difference. First operand has 411 places, 335 transitions, 3754 flow. Second operand 11 states and 175 transitions. [2024-05-12 12:50:13,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 377 transitions, 4896 flow [2024-05-12 12:50:16,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 377 transitions, 4745 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-05-12 12:50:16,397 INFO L231 Difference]: Finished difference. Result has 412 places, 337 transitions, 3820 flow [2024-05-12 12:50:16,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3603, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3820, PETRI_PLACES=412, PETRI_TRANSITIONS=337} [2024-05-12 12:50:16,397 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 368 predicate places. [2024-05-12 12:50:16,397 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 337 transitions, 3820 flow [2024-05-12 12:50:16,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:16,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:50:16,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:50:16,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-05-12 12:50:16,397 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:50:16,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:50:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 918348279, now seen corresponding path program 16 times [2024-05-12 12:50:16,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:50:16,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502431577] [2024-05-12 12:50:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:50:16,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:50:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:50:20,921 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 12:50:20,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:50:20,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502431577] [2024-05-12 12:50:20,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502431577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:50:20,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:50:20,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:50:20,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124743973] [2024-05-12 12:50:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:50:20,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:50:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:50:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:50:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:50:21,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:50:21,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 337 transitions, 3820 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:21,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:50:21,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:50:21,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:50:23,038 INFO L124 PetriNetUnfolderBase]: 2947/5619 cut-off events. [2024-05-12 12:50:23,038 INFO L125 PetriNetUnfolderBase]: For 299626/299629 co-relation queries the response was YES. [2024-05-12 12:50:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30875 conditions, 5619 events. 2947/5619 cut-off events. For 299626/299629 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 41056 event pairs, 1068 based on Foata normal form. 2/5309 useless extension candidates. Maximal degree in co-relation 30665. Up to 4787 conditions per place. [2024-05-12 12:50:23,124 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 320 selfloop transitions, 47 changer transitions 0/374 dead transitions. [2024-05-12 12:50:23,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 374 transitions, 4824 flow [2024-05-12 12:50:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:50:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:50:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-05-12 12:50:23,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-05-12 12:50:23,125 INFO L175 Difference]: Start difference. First operand has 412 places, 337 transitions, 3820 flow. Second operand 11 states and 176 transitions. [2024-05-12 12:50:23,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 374 transitions, 4824 flow [2024-05-12 12:50:25,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 374 transitions, 4623 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-05-12 12:50:25,833 INFO L231 Difference]: Finished difference. Result has 414 places, 338 transitions, 3773 flow [2024-05-12 12:50:25,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3773, PETRI_PLACES=414, PETRI_TRANSITIONS=338} [2024-05-12 12:50:25,833 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 370 predicate places. [2024-05-12 12:50:25,833 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 338 transitions, 3773 flow [2024-05-12 12:50:25,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:25,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:50:25,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:50:25,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-05-12 12:50:25,834 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:50:25,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:50:25,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1840388629, now seen corresponding path program 8 times [2024-05-12 12:50:25,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:50:25,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590258542] [2024-05-12 12:50:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:50:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:50:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:50:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:50:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:50:29,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590258542] [2024-05-12 12:50:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590258542] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:50:29,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:50:29,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:50:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483726048] [2024-05-12 12:50:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:50:29,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:50:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:50:29,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:50:29,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:50:30,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:50:30,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 338 transitions, 3773 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:50:30,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:50:30,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:50:30,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:50:32,476 INFO L124 PetriNetUnfolderBase]: 3129/6038 cut-off events. [2024-05-12 12:50:32,484 INFO L125 PetriNetUnfolderBase]: For 494252/494255 co-relation queries the response was YES. [2024-05-12 12:50:32,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34365 conditions, 6038 events. 3129/6038 cut-off events. For 494252/494255 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 45229 event pairs, 1141 based on Foata normal form. 8/5710 useless extension candidates. Maximal degree in co-relation 34154. Up to 4631 conditions per place. [2024-05-12 12:50:32,574 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 329 selfloop transitions, 58 changer transitions 0/394 dead transitions. [2024-05-12 12:50:32,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 394 transitions, 5335 flow [2024-05-12 12:50:32,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:50:32,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:50:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-05-12 12:50:32,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-05-12 12:50:32,575 INFO L175 Difference]: Start difference. First operand has 414 places, 338 transitions, 3773 flow. Second operand 12 states and 202 transitions. [2024-05-12 12:50:32,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 394 transitions, 5335 flow [2024-05-12 12:50:36,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 394 transitions, 5227 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-05-12 12:50:36,207 INFO L231 Difference]: Finished difference. Result has 419 places, 341 transitions, 3896 flow [2024-05-12 12:50:36,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3896, PETRI_PLACES=419, PETRI_TRANSITIONS=341} [2024-05-12 12:50:36,208 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 375 predicate places. [2024-05-12 12:50:36,208 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 341 transitions, 3896 flow [2024-05-12 12:50:36,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:50:36,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:50:36,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:50:36,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-05-12 12:50:36,208 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:50:36,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:50:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash -576254685, now seen corresponding path program 17 times [2024-05-12 12:50:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:50:36,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895042149] [2024-05-12 12:50:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:50:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:50:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:50:40,547 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 12:50:40,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:50:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895042149] [2024-05-12 12:50:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895042149] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:50:40,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:50:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:50:40,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212946245] [2024-05-12 12:50:40,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:50:40,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:50:40,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:50:40,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:50:40,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:50:40,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:50:40,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 341 transitions, 3896 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:40,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:50:40,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:50:40,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:50:42,820 INFO L124 PetriNetUnfolderBase]: 3149/6081 cut-off events. [2024-05-12 12:50:42,820 INFO L125 PetriNetUnfolderBase]: For 438887/438890 co-relation queries the response was YES. [2024-05-12 12:50:42,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35059 conditions, 6081 events. 3149/6081 cut-off events. For 438887/438890 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 45727 event pairs, 1156 based on Foata normal form. 2/5740 useless extension candidates. Maximal degree in co-relation 34845. Up to 5117 conditions per place. [2024-05-12 12:50:42,906 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 316 selfloop transitions, 55 changer transitions 0/378 dead transitions. [2024-05-12 12:50:42,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 378 transitions, 4910 flow [2024-05-12 12:50:42,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:50:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:50:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 12:50:42,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-05-12 12:50:42,907 INFO L175 Difference]: Start difference. First operand has 419 places, 341 transitions, 3896 flow. Second operand 11 states and 177 transitions. [2024-05-12 12:50:42,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 378 transitions, 4910 flow [2024-05-12 12:50:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 378 transitions, 4809 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 12:50:46,491 INFO L231 Difference]: Finished difference. Result has 422 places, 342 transitions, 3967 flow [2024-05-12 12:50:46,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3967, PETRI_PLACES=422, PETRI_TRANSITIONS=342} [2024-05-12 12:50:46,491 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 378 predicate places. [2024-05-12 12:50:46,491 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 342 transitions, 3967 flow [2024-05-12 12:50:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:50:46,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:50:46,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:50:46,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-05-12 12:50:46,492 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:50:46,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:50:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash 918675329, now seen corresponding path program 9 times [2024-05-12 12:50:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:50:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515939679] [2024-05-12 12:50:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:50:46,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:50:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:50:50,533 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 12:50:50,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:50:50,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515939679] [2024-05-12 12:50:50,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515939679] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:50:50,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:50:50,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 12:50:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891698907] [2024-05-12 12:50:50,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:50:50,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 12:50:50,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:50:50,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 12:50:50,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-05-12 12:50:50,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:50:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 342 transitions, 3967 flow. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:50:50,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:50:50,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:50:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:50:53,111 INFO L124 PetriNetUnfolderBase]: 3317/6475 cut-off events. [2024-05-12 12:50:53,112 INFO L125 PetriNetUnfolderBase]: For 669699/669702 co-relation queries the response was YES. [2024-05-12 12:50:53,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37439 conditions, 6475 events. 3317/6475 cut-off events. For 669699/669702 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 49620 event pairs, 1141 based on Foata normal form. 20/6134 useless extension candidates. Maximal degree in co-relation 37224. Up to 4331 conditions per place. [2024-05-12 12:50:53,204 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 228 selfloop transitions, 147 changer transitions 0/382 dead transitions. [2024-05-12 12:50:53,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 382 transitions, 4965 flow [2024-05-12 12:50:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:50:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:50:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-05-12 12:50:53,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-05-12 12:50:53,205 INFO L175 Difference]: Start difference. First operand has 422 places, 342 transitions, 3967 flow. Second operand 11 states and 183 transitions. [2024-05-12 12:50:53,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 382 transitions, 4965 flow [2024-05-12 12:50:57,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 382 transitions, 4839 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-05-12 12:50:57,062 INFO L231 Difference]: Finished difference. Result has 424 places, 342 transitions, 4143 flow [2024-05-12 12:50:57,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4143, PETRI_PLACES=424, PETRI_TRANSITIONS=342} [2024-05-12 12:50:57,063 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 380 predicate places. [2024-05-12 12:50:57,063 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 342 transitions, 4143 flow [2024-05-12 12:50:57,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:50:57,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:50:57,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:50:57,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-05-12 12:50:57,063 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:50:57,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:50:57,063 INFO L85 PathProgramCache]: Analyzing trace with hash -575916475, now seen corresponding path program 10 times [2024-05-12 12:50:57,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:50:57,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673186819] [2024-05-12 12:50:57,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:50:57,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:50:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:51:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:51:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:51:02,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673186819] [2024-05-12 12:51:02,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673186819] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:51:02,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:51:02,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:51:02,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578961427] [2024-05-12 12:51:02,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:51:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:51:02,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:51:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:51:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:51:02,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:51:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 342 transitions, 4143 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:51:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:51:02,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:51:02,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:51:04,914 INFO L124 PetriNetUnfolderBase]: 3583/7091 cut-off events. [2024-05-12 12:51:04,914 INFO L125 PetriNetUnfolderBase]: For 689244/689247 co-relation queries the response was YES. [2024-05-12 12:51:05,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42845 conditions, 7091 events. 3583/7091 cut-off events. For 689244/689247 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 56136 event pairs, 1393 based on Foata normal form. 8/6696 useless extension candidates. Maximal degree in co-relation 42629. Up to 5314 conditions per place. [2024-05-12 12:51:05,026 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 327 selfloop transitions, 64 changer transitions 0/398 dead transitions. [2024-05-12 12:51:05,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 398 transitions, 5731 flow [2024-05-12 12:51:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:51:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:51:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-05-12 12:51:05,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42291666666666666 [2024-05-12 12:51:05,027 INFO L175 Difference]: Start difference. First operand has 424 places, 342 transitions, 4143 flow. Second operand 12 states and 203 transitions. [2024-05-12 12:51:05,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 398 transitions, 5731 flow [2024-05-12 12:51:09,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 398 transitions, 5435 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-05-12 12:51:09,705 INFO L231 Difference]: Finished difference. Result has 428 places, 345 transitions, 4099 flow [2024-05-12 12:51:09,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4099, PETRI_PLACES=428, PETRI_TRANSITIONS=345} [2024-05-12 12:51:09,705 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 384 predicate places. [2024-05-12 12:51:09,705 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 345 transitions, 4099 flow [2024-05-12 12:51:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:51:09,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:51:09,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:51:09,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-05-12 12:51:09,706 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:51:09,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:51:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 918358199, now seen corresponding path program 11 times [2024-05-12 12:51:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:51:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127392851] [2024-05-12 12:51:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:51:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:51:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:51:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:51:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:51:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127392851] [2024-05-12 12:51:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127392851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:51:14,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:51:14,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:51:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732714300] [2024-05-12 12:51:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:51:14,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:51:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:51:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:51:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:51:14,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:51:14,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 345 transitions, 4099 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:51:14,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:51:14,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:51:14,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:51:17,383 INFO L124 PetriNetUnfolderBase]: 3651/7210 cut-off events. [2024-05-12 12:51:17,384 INFO L125 PetriNetUnfolderBase]: For 725698/725701 co-relation queries the response was YES. [2024-05-12 12:51:17,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43517 conditions, 7210 events. 3651/7210 cut-off events. For 725698/725701 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 57379 event pairs, 1548 based on Foata normal form. 10/6813 useless extension candidates. Maximal degree in co-relation 43299. Up to 6024 conditions per place. [2024-05-12 12:51:17,507 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 331 selfloop transitions, 49 changer transitions 0/387 dead transitions. [2024-05-12 12:51:17,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 387 transitions, 5113 flow [2024-05-12 12:51:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:51:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:51:17,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-05-12 12:51:17,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39791666666666664 [2024-05-12 12:51:17,509 INFO L175 Difference]: Start difference. First operand has 428 places, 345 transitions, 4099 flow. Second operand 12 states and 191 transitions. [2024-05-12 12:51:17,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 387 transitions, 5113 flow [2024-05-12 12:51:21,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 387 transitions, 4989 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-05-12 12:51:21,831 INFO L231 Difference]: Finished difference. Result has 432 places, 346 transitions, 4180 flow [2024-05-12 12:51:21,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4180, PETRI_PLACES=432, PETRI_TRANSITIONS=346} [2024-05-12 12:51:21,831 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 388 predicate places. [2024-05-12 12:51:21,832 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 346 transitions, 4180 flow [2024-05-12 12:51:21,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:51:21,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:51:21,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:51:21,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-05-12 12:51:21,832 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:51:21,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:51:21,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1314608513, now seen corresponding path program 18 times [2024-05-12 12:51:21,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:51:21,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776165446] [2024-05-12 12:51:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:51:21,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:51:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:51:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:51:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:51:26,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776165446] [2024-05-12 12:51:26,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776165446] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:51:26,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:51:26,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:51:26,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295453669] [2024-05-12 12:51:26,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:51:26,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:51:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:51:26,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:51:26,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:51:26,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:51:26,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 346 transitions, 4180 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:51:26,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:51:26,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:51:26,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:51:28,575 INFO L124 PetriNetUnfolderBase]: 3667/7239 cut-off events. [2024-05-12 12:51:28,576 INFO L125 PetriNetUnfolderBase]: For 654485/654488 co-relation queries the response was YES. [2024-05-12 12:51:28,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44187 conditions, 7239 events. 3667/7239 cut-off events. For 654485/654488 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 57619 event pairs, 1429 based on Foata normal form. 2/6834 useless extension candidates. Maximal degree in co-relation 43968. Up to 5811 conditions per place. [2024-05-12 12:51:28,694 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 298 selfloop transitions, 81 changer transitions 0/386 dead transitions. [2024-05-12 12:51:28,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 386 transitions, 5244 flow [2024-05-12 12:51:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:51:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:51:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-05-12 12:51:28,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-05-12 12:51:28,695 INFO L175 Difference]: Start difference. First operand has 432 places, 346 transitions, 4180 flow. Second operand 11 states and 183 transitions. [2024-05-12 12:51:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 386 transitions, 5244 flow [2024-05-12 12:51:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 386 transitions, 5053 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-05-12 12:51:33,322 INFO L231 Difference]: Finished difference. Result has 433 places, 348 transitions, 4322 flow [2024-05-12 12:51:33,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4322, PETRI_PLACES=433, PETRI_TRANSITIONS=348} [2024-05-12 12:51:33,322 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places. [2024-05-12 12:51:33,322 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 348 transitions, 4322 flow [2024-05-12 12:51:33,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:51:33,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:51:33,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:51:33,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-05-12 12:51:33,322 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:51:33,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:51:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash 909151509, now seen corresponding path program 19 times [2024-05-12 12:51:33,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:51:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353089162] [2024-05-12 12:51:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:51:33,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:51:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:51:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:51:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:51:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353089162] [2024-05-12 12:51:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353089162] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:51:37,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:51:37,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-05-12 12:51:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899200442] [2024-05-12 12:51:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:51:37,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:51:37,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:51:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:51:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:51:37,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:51:37,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 348 transitions, 4322 flow. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:51:37,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:51:37,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:51:37,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:51:39,624 INFO L124 PetriNetUnfolderBase]: 3683/7279 cut-off events. [2024-05-12 12:51:39,625 INFO L125 PetriNetUnfolderBase]: For 663601/663604 co-relation queries the response was YES. [2024-05-12 12:51:39,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44645 conditions, 7279 events. 3683/7279 cut-off events. For 663601/663604 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 58033 event pairs, 1584 based on Foata normal form. 2/6867 useless extension candidates. Maximal degree in co-relation 44425. Up to 6254 conditions per place. [2024-05-12 12:51:39,748 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 335 selfloop transitions, 41 changer transitions 0/383 dead transitions. [2024-05-12 12:51:39,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 383 transitions, 5348 flow [2024-05-12 12:51:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:51:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:51:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-05-12 12:51:39,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931818181818182 [2024-05-12 12:51:39,749 INFO L175 Difference]: Start difference. First operand has 433 places, 348 transitions, 4322 flow. Second operand 11 states and 173 transitions. [2024-05-12 12:51:39,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 383 transitions, 5348 flow [2024-05-12 12:51:44,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 383 transitions, 4969 flow, removed 83 selfloop flow, removed 11 redundant places. [2024-05-12 12:51:44,771 INFO L231 Difference]: Finished difference. Result has 433 places, 350 transitions, 4198 flow [2024-05-12 12:51:44,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4198, PETRI_PLACES=433, PETRI_TRANSITIONS=350} [2024-05-12 12:51:44,771 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 389 predicate places. [2024-05-12 12:51:44,772 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 350 transitions, 4198 flow [2024-05-12 12:51:44,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 12:51:44,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:51:44,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:51:44,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-05-12 12:51:44,772 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:51:44,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:51:44,773 INFO L85 PathProgramCache]: Analyzing trace with hash 909144069, now seen corresponding path program 20 times [2024-05-12 12:51:44,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:51:44,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104559172] [2024-05-12 12:51:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:51:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:51:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:51:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:51:48,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:51:48,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104559172] [2024-05-12 12:51:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104559172] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:51:48,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:51:48,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-05-12 12:51:48,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368463901] [2024-05-12 12:51:48,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:51:48,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 12:51:48,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:51:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 12:51:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-05-12 12:51:48,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-05-12 12:51:48,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 350 transitions, 4198 flow. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:51:48,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:51:48,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-05-12 12:51:48,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:51:51,158 INFO L124 PetriNetUnfolderBase]: 3703/7316 cut-off events. [2024-05-12 12:51:51,158 INFO L125 PetriNetUnfolderBase]: For 665800/665803 co-relation queries the response was YES. [2024-05-12 12:51:51,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44094 conditions, 7316 events. 3703/7316 cut-off events. For 665800/665803 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 58420 event pairs, 1581 based on Foata normal form. 2/6903 useless extension candidates. Maximal degree in co-relation 43876. Up to 6263 conditions per place. [2024-05-12 12:51:51,265 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 343 selfloop transitions, 40 changer transitions 0/390 dead transitions. [2024-05-12 12:51:51,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 390 transitions, 5372 flow [2024-05-12 12:51:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 12:51:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 12:51:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-05-12 12:51:51,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-05-12 12:51:51,267 INFO L175 Difference]: Start difference. First operand has 433 places, 350 transitions, 4198 flow. Second operand 11 states and 177 transitions. [2024-05-12 12:51:51,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 390 transitions, 5372 flow [2024-05-12 12:51:55,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 390 transitions, 5133 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-05-12 12:51:55,660 INFO L231 Difference]: Finished difference. Result has 435 places, 352 transitions, 4216 flow [2024-05-12 12:51:55,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4216, PETRI_PLACES=435, PETRI_TRANSITIONS=352} [2024-05-12 12:51:55,660 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 391 predicate places. [2024-05-12 12:51:55,660 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 352 transitions, 4216 flow [2024-05-12 12:51:55,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 14 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 12:51:55,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:51:55,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:51:55,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-05-12 12:51:55,661 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 12:51:55,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:51:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1816624009, now seen corresponding path program 12 times [2024-05-12 12:51:55,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:51:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526656819] [2024-05-12 12:51:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:51:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:51:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15