./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:41:24,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:41:24,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:41:24,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:41:24,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:41:24,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:41:24,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:41:24,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:41:24,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:41:24,279 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:41:24,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:41:24,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:41:24,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:41:24,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:41:24,282 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:41:24,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:41:24,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:41:24,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:41:24,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:41:24,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:41:24,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:41:24,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:41:24,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:41:24,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:41:24,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:41:24,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:41:24,285 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:41:24,285 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:41:24,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:41:24,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:41:24,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:41:24,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:41:24,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:41:24,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:41:24,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:41:24,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:41:24,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:41:24,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:41:24,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:41:24,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:41:24,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:41:24,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:41:24,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:41:24,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:41:24,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:41:24,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:41:24,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:41:24,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:41:24,526 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:41:24,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 18:41:25,598 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:41:25,831 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:41:25,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 18:41:25,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cece8e208/f2c6b1b9816f474196ad0c64b2395945/FLAG185f482dc [2024-06-27 18:41:25,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cece8e208/f2c6b1b9816f474196ad0c64b2395945 [2024-06-27 18:41:25,863 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:41:25,864 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:41:25,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:41:26,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:41:26,030 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:41:26,031 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:41:26,031 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:41:26,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:41:26,036 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:41:25" (1/2) ... [2024-06-27 18:41:26,037 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@838326f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:41:26, skipping insertion in model container [2024-06-27 18:41:26,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:41:25" (1/2) ... [2024-06-27 18:41:26,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@697c8ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:41:26, skipping insertion in model container [2024-06-27 18:41:26,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:41:26" (2/2) ... [2024-06-27 18:41:26,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@838326f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26, skipping insertion in model container [2024-06-27 18:41:26,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:41:26" (2/2) ... [2024-06-27 18:41:26,040 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:41:26,153 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:41:26,154 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) [2024-06-27 18:41:26,155 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) [2024-06-27 18:41:26,155 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) [2024-06-27 18:41:26,155 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:41:26,155 INFO L106 edCorrectnessWitness]: ghost_update [L834-L834] multithreaded = 1; [2024-06-27 18:41:26,196 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:41:26,347 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i[974,987] [2024-06-27 18:41:26,506 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:41:26,513 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:41:26,551 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i[974,987] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:41:26,609 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:41:26,643 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:41:26,644 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26 WrapperNode [2024-06-27 18:41:26,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:41:26,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:41:26,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:41:26,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:41:26,651 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 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,683 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 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,718 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 162 [2024-06-27 18:41:26,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:41:26,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:41:26,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:41:26,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:41:26,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,732 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,746 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:41:26,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:41:26,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:41:26,766 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:41:26,766 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:41:26,767 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (1/1) ... [2024-06-27 18:41:26,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:41:26,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:41:26,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:41:26,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:41:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:41:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:41:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:41:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:41:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:41:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:41:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:41:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:41:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:41:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:41:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:41:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:41:26,859 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:41:26,973 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:41:26,975 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:41:27,246 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:41:27,248 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:41:27,404 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:41:27,405 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:41:27,405 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:41:27 BoogieIcfgContainer [2024-06-27 18:41:27,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:41:27,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:41:27,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:41:27,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:41:27,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:41:25" (1/4) ... [2024-06-27 18:41:27,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3821d810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:41:27, skipping insertion in model container [2024-06-27 18:41:27,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:41:26" (2/4) ... [2024-06-27 18:41:27,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3821d810 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:41:27, skipping insertion in model container [2024-06-27 18:41:27,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:41:26" (3/4) ... [2024-06-27 18:41:27,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3821d810 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:41:27, skipping insertion in model container [2024-06-27 18:41:27,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:41:27" (4/4) ... [2024-06-27 18:41:27,414 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 18:41:27,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:41:27,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:41:27,427 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:41:27,473 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:41:27,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:41:27,532 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 18:41:27,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:41:27,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 18:41:27,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 18:41:27,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 18:41:27,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:41:27,559 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;@144e09eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:41:27,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:41:27,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:41:27,564 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:41:27,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:41:27,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:27,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:41:27,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:27,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash 386369729, now seen corresponding path program 1 times [2024-06-27 18:41:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:27,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809891375] [2024-06-27 18:41:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:27,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:28,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809891375] [2024-06-27 18:41:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809891375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:41:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191932742] [2024-06-27 18:41:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:41:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:41:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:41:28,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 18:41:28,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:28,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 18:41:28,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:29,208 INFO L124 PetriNetUnfolderBase]: 3506/5124 cut-off events. [2024-06-27 18:41:29,209 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 18:41:29,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 5124 events. 3506/5124 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 28708 event pairs, 1988 based on Foata normal form. 176/5034 useless extension candidates. Maximal degree in co-relation 10263. Up to 5051 conditions per place. [2024-06-27 18:41:29,239 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:41:29,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-27 18:41:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:41:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:41:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-27 18:41:29,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-27 18:41:29,250 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-27 18:41:29,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-27 18:41:29,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:29,256 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-27 18:41:29,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-27 18:41:29,260 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 18:41:29,260 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-27 18:41:29,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:29,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:29,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:41:29,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:29,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash -170750702, now seen corresponding path program 1 times [2024-06-27 18:41:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745938426] [2024-06-27 18:41:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:29,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745938426] [2024-06-27 18:41:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745938426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:29,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:29,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:41:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276921970] [2024-06-27 18:41:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:29,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:41:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:41:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:41:29,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:29,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:29,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:29,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:30,453 INFO L124 PetriNetUnfolderBase]: 4247/6792 cut-off events. [2024-06-27 18:41:30,453 INFO L125 PetriNetUnfolderBase]: For 905/910 co-relation queries the response was YES. [2024-06-27 18:41:30,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14469 conditions, 6792 events. 4247/6792 cut-off events. For 905/910 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42742 event pairs, 2001 based on Foata normal form. 10/6325 useless extension candidates. Maximal degree in co-relation 14457. Up to 6041 conditions per place. [2024-06-27 18:41:30,480 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 55 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-27 18:41:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 345 flow [2024-06-27 18:41:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:41:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:41:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 18:41:30,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2024-06-27 18:41:30,484 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 117 transitions. [2024-06-27 18:41:30,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 345 flow [2024-06-27 18:41:30,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:41:30,490 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 214 flow [2024-06-27 18:41:30,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-06-27 18:41:30,491 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 18:41:30,492 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 214 flow [2024-06-27 18:41:30,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:30,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:30,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:30,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:41:30,495 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:30,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash -171324267, now seen corresponding path program 1 times [2024-06-27 18:41:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537999335] [2024-06-27 18:41:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:30,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:30,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:30,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:30,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537999335] [2024-06-27 18:41:30,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537999335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:30,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:30,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:41:30,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118059085] [2024-06-27 18:41:30,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:30,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:41:30,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:30,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:41:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:41:30,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 46 [2024-06-27 18:41:30,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:30,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:30,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 46 [2024-06-27 18:41:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:30,951 INFO L124 PetriNetUnfolderBase]: 1353/2645 cut-off events. [2024-06-27 18:41:30,951 INFO L125 PetriNetUnfolderBase]: For 531/589 co-relation queries the response was YES. [2024-06-27 18:41:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 2645 events. 1353/2645 cut-off events. For 531/589 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18622 event pairs, 521 based on Foata normal form. 16/2529 useless extension candidates. Maximal degree in co-relation 5403. Up to 1807 conditions per place. [2024-06-27 18:41:30,965 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 35 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-27 18:41:30,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 298 flow [2024-06-27 18:41:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:41:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:41:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-06-27 18:41:30,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-06-27 18:41:30,969 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 214 flow. Second operand 3 states and 102 transitions. [2024-06-27 18:41:30,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 298 flow [2024-06-27 18:41:30,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 294 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:41:30,973 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 194 flow [2024-06-27 18:41:30,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 18:41:30,974 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-06-27 18:41:30,974 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 194 flow [2024-06-27 18:41:30,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:30,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:30,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:30,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:41:30,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:30,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1777230861, now seen corresponding path program 1 times [2024-06-27 18:41:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:30,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22236900] [2024-06-27 18:41:30,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:30,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22236900] [2024-06-27 18:41:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22236900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:31,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:31,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:41:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42550311] [2024-06-27 18:41:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:41:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:41:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:41:31,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 18:41:31,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:31,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:31,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 18:41:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:32,518 INFO L124 PetriNetUnfolderBase]: 3600/5783 cut-off events. [2024-06-27 18:41:32,518 INFO L125 PetriNetUnfolderBase]: For 3136/3151 co-relation queries the response was YES. [2024-06-27 18:41:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13567 conditions, 5783 events. 3600/5783 cut-off events. For 3136/3151 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35315 event pairs, 1445 based on Foata normal form. 18/5610 useless extension candidates. Maximal degree in co-relation 13550. Up to 5086 conditions per place. [2024-06-27 18:41:32,548 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 58 selfloop transitions, 12 changer transitions 1/81 dead transitions. [2024-06-27 18:41:32,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 412 flow [2024-06-27 18:41:32,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:41:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:41:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-27 18:41:32,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591304347826087 [2024-06-27 18:41:32,550 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 194 flow. Second operand 5 states and 136 transitions. [2024-06-27 18:41:32,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 412 flow [2024-06-27 18:41:32,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:32,553 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 230 flow [2024-06-27 18:41:32,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 18:41:32,554 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-06-27 18:41:32,554 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 230 flow [2024-06-27 18:41:32,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:32,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:32,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:41:32,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:32,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1434119949, now seen corresponding path program 1 times [2024-06-27 18:41:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:32,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494083272] [2024-06-27 18:41:32,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:32,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:32,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:32,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:32,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494083272] [2024-06-27 18:41:32,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494083272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:32,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:32,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:41:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306501968] [2024-06-27 18:41:32,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:32,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:41:32,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:41:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:41:33,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:41:33,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:33,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:33,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:41:33,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:33,636 INFO L124 PetriNetUnfolderBase]: 2959/4786 cut-off events. [2024-06-27 18:41:33,648 INFO L125 PetriNetUnfolderBase]: For 3571/3571 co-relation queries the response was YES. [2024-06-27 18:41:33,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11931 conditions, 4786 events. 2959/4786 cut-off events. For 3571/3571 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28889 event pairs, 1631 based on Foata normal form. 2/4635 useless extension candidates. Maximal degree in co-relation 11912. Up to 4260 conditions per place. [2024-06-27 18:41:33,677 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-27 18:41:33,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 458 flow [2024-06-27 18:41:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:41:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:41:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 18:41:33,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-27 18:41:33,679 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 230 flow. Second operand 5 states and 117 transitions. [2024-06-27 18:41:33,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 458 flow [2024-06-27 18:41:33,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 422 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:33,684 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 283 flow [2024-06-27 18:41:33,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-27 18:41:33,685 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-06-27 18:41:33,685 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 283 flow [2024-06-27 18:41:33,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:33,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:33,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:33,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:41:33,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:33,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1500001168, now seen corresponding path program 1 times [2024-06-27 18:41:33,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:33,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798188454] [2024-06-27 18:41:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:33,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798188454] [2024-06-27 18:41:34,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798188454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:34,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:34,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:41:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526184890] [2024-06-27 18:41:34,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:34,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:41:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:41:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:41:34,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-27 18:41:34,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-27 18:41:34,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:34,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-27 18:41:34,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:34,994 INFO L124 PetriNetUnfolderBase]: 2965/4792 cut-off events. [2024-06-27 18:41:34,995 INFO L125 PetriNetUnfolderBase]: For 5478/5478 co-relation queries the response was YES. [2024-06-27 18:41:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12896 conditions, 4792 events. 2965/4792 cut-off events. For 5478/5478 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29071 event pairs, 1560 based on Foata normal form. 4/4643 useless extension candidates. Maximal degree in co-relation 12874. Up to 4232 conditions per place. [2024-06-27 18:41:35,019 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 69 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-27 18:41:35,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 541 flow [2024-06-27 18:41:35,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:41:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:41:35,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:41:35,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 18:41:35,021 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 283 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:41:35,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 541 flow [2024-06-27 18:41:35,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:35,025 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 335 flow [2024-06-27 18:41:35,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 18:41:35,026 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-27 18:41:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 335 flow [2024-06-27 18:41:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-27 18:41:35,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:35,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:41:35,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:35,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1834624648, now seen corresponding path program 1 times [2024-06-27 18:41:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745306864] [2024-06-27 18:41:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:35,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745306864] [2024-06-27 18:41:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745306864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:35,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266293212] [2024-06-27 18:41:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:35,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:35,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 335 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:35,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:35,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:35,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:36,313 INFO L124 PetriNetUnfolderBase]: 3663/5892 cut-off events. [2024-06-27 18:41:36,313 INFO L125 PetriNetUnfolderBase]: For 9202/9228 co-relation queries the response was YES. [2024-06-27 18:41:36,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16886 conditions, 5892 events. 3663/5892 cut-off events. For 9202/9228 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 35606 event pairs, 1532 based on Foata normal form. 24/5727 useless extension candidates. Maximal degree in co-relation 16862. Up to 5172 conditions per place. [2024-06-27 18:41:36,337 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 72 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-27 18:41:36,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 102 transitions, 644 flow [2024-06-27 18:41:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:41:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:41:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:41:36,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 18:41:36,339 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 335 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:41:36,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 102 transitions, 644 flow [2024-06-27 18:41:36,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 607 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:36,345 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 419 flow [2024-06-27 18:41:36,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=419, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2024-06-27 18:41:36,345 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 18:41:36,346 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 419 flow [2024-06-27 18:41:36,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:36,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:36,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:36,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:41:36,346 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:36,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:36,347 INFO L85 PathProgramCache]: Analyzing trace with hash 670000344, now seen corresponding path program 2 times [2024-06-27 18:41:36,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:36,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159932141] [2024-06-27 18:41:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:36,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:36,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159932141] [2024-06-27 18:41:36,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159932141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:36,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:36,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:41:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345122634] [2024-06-27 18:41:36,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:41:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:41:36,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:41:36,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:36,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 419 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:36,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:36,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:36,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:37,571 INFO L124 PetriNetUnfolderBase]: 3682/5917 cut-off events. [2024-06-27 18:41:37,571 INFO L125 PetriNetUnfolderBase]: For 13028/13036 co-relation queries the response was YES. [2024-06-27 18:41:37,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18427 conditions, 5917 events. 3682/5917 cut-off events. For 13028/13036 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 35749 event pairs, 1391 based on Foata normal form. 8/5739 useless extension candidates. Maximal degree in co-relation 18401. Up to 5109 conditions per place. [2024-06-27 18:41:37,599 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 78 selfloop transitions, 30 changer transitions 0/116 dead transitions. [2024-06-27 18:41:37,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 116 transitions, 843 flow [2024-06-27 18:41:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:41:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:41:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:41:37,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:41:37,601 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 419 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:41:37,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 116 transitions, 843 flow [2024-06-27 18:41:37,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 116 transitions, 803 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:37,608 INFO L231 Difference]: Finished difference. Result has 73 places, 85 transitions, 577 flow [2024-06-27 18:41:37,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=73, PETRI_TRANSITIONS=85} [2024-06-27 18:41:37,609 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-06-27 18:41:37,609 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 85 transitions, 577 flow [2024-06-27 18:41:37,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:37,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:37,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:37,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:41:37,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:37,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2014346810, now seen corresponding path program 1 times [2024-06-27 18:41:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:37,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016300638] [2024-06-27 18:41:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016300638] [2024-06-27 18:41:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016300638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:38,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:41:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109426166] [2024-06-27 18:41:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:38,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:41:38,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:38,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:41:38,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:41:38,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:41:38,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 85 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:38,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:38,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:41:38,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:38,766 INFO L124 PetriNetUnfolderBase]: 4328/6848 cut-off events. [2024-06-27 18:41:38,766 INFO L125 PetriNetUnfolderBase]: For 19987/19987 co-relation queries the response was YES. [2024-06-27 18:41:38,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22752 conditions, 6848 events. 4328/6848 cut-off events. For 19987/19987 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 40722 event pairs, 1817 based on Foata normal form. 2/6639 useless extension candidates. Maximal degree in co-relation 22723. Up to 6174 conditions per place. [2024-06-27 18:41:38,801 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 95 selfloop transitions, 12 changer transitions 0/114 dead transitions. [2024-06-27 18:41:38,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 933 flow [2024-06-27 18:41:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:41:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:41:38,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 18:41:38,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46956521739130436 [2024-06-27 18:41:38,803 INFO L175 Difference]: Start difference. First operand has 73 places, 85 transitions, 577 flow. Second operand 5 states and 108 transitions. [2024-06-27 18:41:38,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 933 flow [2024-06-27 18:41:38,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 114 transitions, 861 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:38,820 INFO L231 Difference]: Finished difference. Result has 76 places, 95 transitions, 645 flow [2024-06-27 18:41:38,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=76, PETRI_TRANSITIONS=95} [2024-06-27 18:41:38,821 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 24 predicate places. [2024-06-27 18:41:38,821 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 95 transitions, 645 flow [2024-06-27 18:41:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:38,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:38,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:41:38,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:38,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2039262799, now seen corresponding path program 1 times [2024-06-27 18:41:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:38,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276502210] [2024-06-27 18:41:38,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:38,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:39,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:39,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276502210] [2024-06-27 18:41:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276502210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:39,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93317950] [2024-06-27 18:41:39,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:39,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:39,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:39,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:39,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:39,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:39,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 95 transitions, 645 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:39,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:39,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:39,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:40,435 INFO L124 PetriNetUnfolderBase]: 3677/5892 cut-off events. [2024-06-27 18:41:40,436 INFO L125 PetriNetUnfolderBase]: For 18185/18207 co-relation queries the response was YES. [2024-06-27 18:41:40,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20471 conditions, 5892 events. 3677/5892 cut-off events. For 18185/18207 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 35459 event pairs, 1468 based on Foata normal form. 20/5730 useless extension candidates. Maximal degree in co-relation 20440. Up to 5176 conditions per place. [2024-06-27 18:41:40,522 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 90 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2024-06-27 18:41:40,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1049 flow [2024-06-27 18:41:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:41:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:41:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 18:41:40,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2024-06-27 18:41:40,524 INFO L175 Difference]: Start difference. First operand has 76 places, 95 transitions, 645 flow. Second operand 6 states and 143 transitions. [2024-06-27 18:41:40,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1049 flow [2024-06-27 18:41:40,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1009 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 18:41:40,543 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 787 flow [2024-06-27 18:41:40,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=787, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2024-06-27 18:41:40,545 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 30 predicate places. [2024-06-27 18:41:40,546 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 787 flow [2024-06-27 18:41:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:40,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:40,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:40,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:41:40,546 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:40,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -957923665, now seen corresponding path program 1 times [2024-06-27 18:41:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:40,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154070886] [2024-06-27 18:41:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:41,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154070886] [2024-06-27 18:41:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154070886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:41,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:41,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113489921] [2024-06-27 18:41:41,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:41,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:41,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:41,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:41,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:41,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:41,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:42,159 INFO L124 PetriNetUnfolderBase]: 3744/6005 cut-off events. [2024-06-27 18:41:42,159 INFO L125 PetriNetUnfolderBase]: For 21214/21247 co-relation queries the response was YES. [2024-06-27 18:41:42,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21434 conditions, 6005 events. 3744/6005 cut-off events. For 21214/21247 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 36225 event pairs, 1447 based on Foata normal form. 30/5851 useless extension candidates. Maximal degree in co-relation 21399. Up to 5211 conditions per place. [2024-06-27 18:41:42,197 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 104 selfloop transitions, 44 changer transitions 0/156 dead transitions. [2024-06-27 18:41:42,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 156 transitions, 1323 flow [2024-06-27 18:41:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:41:42,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:41:42,204 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 787 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:41:42,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 156 transitions, 1323 flow [2024-06-27 18:41:42,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 1286 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:42,232 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 1013 flow [2024-06-27 18:41:42,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1013, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-06-27 18:41:42,233 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-06-27 18:41:42,233 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 1013 flow [2024-06-27 18:41:42,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:42,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:42,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:42,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:41:42,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:42,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash -704818585, now seen corresponding path program 2 times [2024-06-27 18:41:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:42,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574463230] [2024-06-27 18:41:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:43,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:43,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574463230] [2024-06-27 18:41:43,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574463230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:43,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:43,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:43,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512211771] [2024-06-27 18:41:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:43,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:43,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:43,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:43,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:43,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 1013 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:43,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:43,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:43,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:43,903 INFO L124 PetriNetUnfolderBase]: 3910/6242 cut-off events. [2024-06-27 18:41:43,903 INFO L125 PetriNetUnfolderBase]: For 30521/30550 co-relation queries the response was YES. [2024-06-27 18:41:43,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24549 conditions, 6242 events. 3910/6242 cut-off events. For 30521/30550 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37569 event pairs, 1326 based on Foata normal form. 32/6090 useless extension candidates. Maximal degree in co-relation 24510. Up to 5332 conditions per place. [2024-06-27 18:41:43,944 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 133 selfloop transitions, 27 changer transitions 0/168 dead transitions. [2024-06-27 18:41:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 168 transitions, 1599 flow [2024-06-27 18:41:43,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:41:43,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:41:43,946 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 1013 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:41:43,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 168 transitions, 1599 flow [2024-06-27 18:41:43,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 168 transitions, 1525 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-27 18:41:43,980 INFO L231 Difference]: Finished difference. Result has 95 places, 126 transitions, 1105 flow [2024-06-27 18:41:43,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1105, PETRI_PLACES=95, PETRI_TRANSITIONS=126} [2024-06-27 18:41:43,982 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-06-27 18:41:43,982 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 126 transitions, 1105 flow [2024-06-27 18:41:43,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:43,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:43,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:43,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:41:43,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:43,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -704825095, now seen corresponding path program 3 times [2024-06-27 18:41:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617537396] [2024-06-27 18:41:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:43,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617537396] [2024-06-27 18:41:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617537396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:44,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:44,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782827614] [2024-06-27 18:41:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:44,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:44,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:44,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:44,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:44,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 126 transitions, 1105 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:44,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:44,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:44,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:45,646 INFO L124 PetriNetUnfolderBase]: 3949/6320 cut-off events. [2024-06-27 18:41:45,647 INFO L125 PetriNetUnfolderBase]: For 37031/37042 co-relation queries the response was YES. [2024-06-27 18:41:45,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26399 conditions, 6320 events. 3949/6320 cut-off events. For 37031/37042 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38270 event pairs, 1373 based on Foata normal form. 10/6143 useless extension candidates. Maximal degree in co-relation 26357. Up to 5370 conditions per place. [2024-06-27 18:41:45,686 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 108 selfloop transitions, 60 changer transitions 0/176 dead transitions. [2024-06-27 18:41:45,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 176 transitions, 1711 flow [2024-06-27 18:41:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:41:45,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-27 18:41:45,688 INFO L175 Difference]: Start difference. First operand has 95 places, 126 transitions, 1105 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:41:45,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 176 transitions, 1711 flow [2024-06-27 18:41:45,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 176 transitions, 1646 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:45,778 INFO L231 Difference]: Finished difference. Result has 100 places, 137 transitions, 1362 flow [2024-06-27 18:41:45,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1362, PETRI_PLACES=100, PETRI_TRANSITIONS=137} [2024-06-27 18:41:45,779 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-27 18:41:45,779 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 137 transitions, 1362 flow [2024-06-27 18:41:45,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:45,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:45,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:45,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:41:45,780 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:45,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:45,780 INFO L85 PathProgramCache]: Analyzing trace with hash -802125839, now seen corresponding path program 1 times [2024-06-27 18:41:45,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:45,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026525292] [2024-06-27 18:41:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:45,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026525292] [2024-06-27 18:41:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026525292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48288748] [2024-06-27 18:41:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:47,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:47,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 137 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:47,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:47,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:47,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:48,660 INFO L124 PetriNetUnfolderBase]: 4448/7155 cut-off events. [2024-06-27 18:41:48,660 INFO L125 PetriNetUnfolderBase]: For 50927/50927 co-relation queries the response was YES. [2024-06-27 18:41:48,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31360 conditions, 7155 events. 4448/7155 cut-off events. For 50927/50927 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 43717 event pairs, 1556 based on Foata normal form. 8/6937 useless extension candidates. Maximal degree in co-relation 31315. Up to 6242 conditions per place. [2024-06-27 18:41:48,706 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 160 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-06-27 18:41:48,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 199 transitions, 1991 flow [2024-06-27 18:41:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-06-27 18:41:48,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49516908212560384 [2024-06-27 18:41:48,708 INFO L175 Difference]: Start difference. First operand has 100 places, 137 transitions, 1362 flow. Second operand 9 states and 205 transitions. [2024-06-27 18:41:48,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 199 transitions, 1991 flow [2024-06-27 18:41:48,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 199 transitions, 1869 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:48,754 INFO L231 Difference]: Finished difference. Result has 109 places, 148 transitions, 1425 flow [2024-06-27 18:41:48,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1425, PETRI_PLACES=109, PETRI_TRANSITIONS=148} [2024-06-27 18:41:48,755 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-06-27 18:41:48,755 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 148 transitions, 1425 flow [2024-06-27 18:41:48,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:48,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:48,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:48,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:41:48,756 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:48,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1207301857, now seen corresponding path program 1 times [2024-06-27 18:41:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:48,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424028776] [2024-06-27 18:41:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:48,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:49,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424028776] [2024-06-27 18:41:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424028776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:49,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:49,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554367634] [2024-06-27 18:41:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:49,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:49,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:49,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:49,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 148 transitions, 1425 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:49,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:49,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:49,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:50,668 INFO L124 PetriNetUnfolderBase]: 4512/7208 cut-off events. [2024-06-27 18:41:50,668 INFO L125 PetriNetUnfolderBase]: For 54176/54207 co-relation queries the response was YES. [2024-06-27 18:41:50,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32504 conditions, 7208 events. 4512/7208 cut-off events. For 54176/54207 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 44394 event pairs, 1241 based on Foata normal form. 30/7014 useless extension candidates. Maximal degree in co-relation 32455. Up to 6311 conditions per place. [2024-06-27 18:41:50,714 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 150 selfloop transitions, 31 changer transitions 0/190 dead transitions. [2024-06-27 18:41:50,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 190 transitions, 1954 flow [2024-06-27 18:41:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:41:50,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-27 18:41:50,718 INFO L175 Difference]: Start difference. First operand has 109 places, 148 transitions, 1425 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:41:50,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 190 transitions, 1954 flow [2024-06-27 18:41:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 190 transitions, 1856 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:50,758 INFO L231 Difference]: Finished difference. Result has 112 places, 155 transitions, 1489 flow [2024-06-27 18:41:50,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1327, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1489, PETRI_PLACES=112, PETRI_TRANSITIONS=155} [2024-06-27 18:41:50,760 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-27 18:41:50,760 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 155 transitions, 1489 flow [2024-06-27 18:41:50,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:50,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:50,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:50,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:41:50,761 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:50,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 366307072, now seen corresponding path program 1 times [2024-06-27 18:41:50,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:50,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329634785] [2024-06-27 18:41:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:51,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:51,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329634785] [2024-06-27 18:41:51,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329634785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:51,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:51,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:51,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607593454] [2024-06-27 18:41:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:51,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:51,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 155 transitions, 1489 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:51,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:51,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:51,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:52,869 INFO L124 PetriNetUnfolderBase]: 4539/7303 cut-off events. [2024-06-27 18:41:52,869 INFO L125 PetriNetUnfolderBase]: For 59871/59904 co-relation queries the response was YES. [2024-06-27 18:41:52,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33373 conditions, 7303 events. 4539/7303 cut-off events. For 59871/59904 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 45648 event pairs, 1426 based on Foata normal form. 30/7092 useless extension candidates. Maximal degree in co-relation 33322. Up to 6275 conditions per place. [2024-06-27 18:41:52,928 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 141 selfloop transitions, 55 changer transitions 0/205 dead transitions. [2024-06-27 18:41:52,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 205 transitions, 2146 flow [2024-06-27 18:41:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 18:41:52,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 18:41:52,929 INFO L175 Difference]: Start difference. First operand has 112 places, 155 transitions, 1489 flow. Second operand 7 states and 170 transitions. [2024-06-27 18:41:52,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 205 transitions, 2146 flow [2024-06-27 18:41:52,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 205 transitions, 2042 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:52,983 INFO L231 Difference]: Finished difference. Result has 116 places, 165 transitions, 1682 flow [2024-06-27 18:41:52,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1682, PETRI_PLACES=116, PETRI_TRANSITIONS=165} [2024-06-27 18:41:52,983 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-27 18:41:52,983 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 165 transitions, 1682 flow [2024-06-27 18:41:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:52,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:52,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:52,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:41:52,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:52,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 366306917, now seen corresponding path program 2 times [2024-06-27 18:41:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751712902] [2024-06-27 18:41:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:53,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:53,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751712902] [2024-06-27 18:41:53,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751712902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:53,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:53,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:53,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156153299] [2024-06-27 18:41:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:53,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:54,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:54,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 165 transitions, 1682 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:54,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:54,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:54,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:55,050 INFO L124 PetriNetUnfolderBase]: 4759/7582 cut-off events. [2024-06-27 18:41:55,050 INFO L125 PetriNetUnfolderBase]: For 73788/73800 co-relation queries the response was YES. [2024-06-27 18:41:55,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37045 conditions, 7582 events. 4759/7582 cut-off events. For 73788/73800 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46513 event pairs, 1442 based on Foata normal form. 16/7379 useless extension candidates. Maximal degree in co-relation 36992. Up to 6582 conditions per place. [2024-06-27 18:41:55,114 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 190 selfloop transitions, 69 changer transitions 0/268 dead transitions. [2024-06-27 18:41:55,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 268 transitions, 3086 flow [2024-06-27 18:41:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 18:41:55,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-27 18:41:55,116 INFO L175 Difference]: Start difference. First operand has 116 places, 165 transitions, 1682 flow. Second operand 9 states and 212 transitions. [2024-06-27 18:41:55,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 268 transitions, 3086 flow [2024-06-27 18:41:55,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 268 transitions, 2955 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:55,298 INFO L231 Difference]: Finished difference. Result has 127 places, 212 transitions, 2470 flow [2024-06-27 18:41:55,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2470, PETRI_PLACES=127, PETRI_TRANSITIONS=212} [2024-06-27 18:41:55,299 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 75 predicate places. [2024-06-27 18:41:55,299 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 212 transitions, 2470 flow [2024-06-27 18:41:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:55,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:55,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:55,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:41:55,300 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:55,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 269532819, now seen corresponding path program 3 times [2024-06-27 18:41:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242329218] [2024-06-27 18:41:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:56,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:56,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242329218] [2024-06-27 18:41:56,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242329218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:56,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:56,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:56,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62739147] [2024-06-27 18:41:56,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:56,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:56,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:56,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:56,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:56,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:56,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 212 transitions, 2470 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:56,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:56,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:56,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:57,291 INFO L124 PetriNetUnfolderBase]: 4793/7627 cut-off events. [2024-06-27 18:41:57,291 INFO L125 PetriNetUnfolderBase]: For 84754/84811 co-relation queries the response was YES. [2024-06-27 18:41:57,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38605 conditions, 7627 events. 4793/7627 cut-off events. For 84754/84811 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46777 event pairs, 1439 based on Foata normal form. 48/7447 useless extension candidates. Maximal degree in co-relation 38546. Up to 6529 conditions per place. [2024-06-27 18:41:57,354 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 164 selfloop transitions, 82 changer transitions 0/255 dead transitions. [2024-06-27 18:41:57,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 255 transitions, 3213 flow [2024-06-27 18:41:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:41:57,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-27 18:41:57,356 INFO L175 Difference]: Start difference. First operand has 127 places, 212 transitions, 2470 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:41:57,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 255 transitions, 3213 flow [2024-06-27 18:41:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 255 transitions, 3079 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 18:41:57,459 INFO L231 Difference]: Finished difference. Result has 133 places, 218 transitions, 2672 flow [2024-06-27 18:41:57,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2672, PETRI_PLACES=133, PETRI_TRANSITIONS=218} [2024-06-27 18:41:57,460 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-27 18:41:57,460 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 218 transitions, 2672 flow [2024-06-27 18:41:57,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:57,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:57,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:57,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:41:57,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:57,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1870510871, now seen corresponding path program 4 times [2024-06-27 18:41:57,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:57,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800479602] [2024-06-27 18:41:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:57,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:58,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800479602] [2024-06-27 18:41:58,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800479602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:58,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:58,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330642563] [2024-06-27 18:41:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:58,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:41:58,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 218 transitions, 2672 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:58,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:58,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:41:58,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:59,582 INFO L124 PetriNetUnfolderBase]: 4793/7454 cut-off events. [2024-06-27 18:41:59,582 INFO L125 PetriNetUnfolderBase]: For 95541/95557 co-relation queries the response was YES. [2024-06-27 18:41:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39265 conditions, 7454 events. 4793/7454 cut-off events. For 95541/95557 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44872 event pairs, 1326 based on Foata normal form. 12/7301 useless extension candidates. Maximal degree in co-relation 39203. Up to 6494 conditions per place. [2024-06-27 18:41:59,672 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 161 selfloop transitions, 86 changer transitions 0/256 dead transitions. [2024-06-27 18:41:59,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 256 transitions, 3376 flow [2024-06-27 18:41:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:41:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:41:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 18:41:59,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-27 18:41:59,676 INFO L175 Difference]: Start difference. First operand has 133 places, 218 transitions, 2672 flow. Second operand 7 states and 164 transitions. [2024-06-27 18:41:59,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 256 transitions, 3376 flow [2024-06-27 18:41:59,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 256 transitions, 3195 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:59,842 INFO L231 Difference]: Finished difference. Result has 137 places, 221 transitions, 2751 flow [2024-06-27 18:41:59,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2751, PETRI_PLACES=137, PETRI_TRANSITIONS=221} [2024-06-27 18:41:59,843 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-06-27 18:41:59,843 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 221 transitions, 2751 flow [2024-06-27 18:41:59,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:59,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:59,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:59,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:41:59,843 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:41:59,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1434861075, now seen corresponding path program 1 times [2024-06-27 18:41:59,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:59,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587332526] [2024-06-27 18:41:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:59,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:00,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587332526] [2024-06-27 18:42:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587332526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573712422] [2024-06-27 18:42:00,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:00,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:00,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 221 transitions, 2751 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:00,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:00,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:00,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:01,443 INFO L124 PetriNetUnfolderBase]: 5109/8030 cut-off events. [2024-06-27 18:42:01,443 INFO L125 PetriNetUnfolderBase]: For 96214/96269 co-relation queries the response was YES. [2024-06-27 18:42:01,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40498 conditions, 8030 events. 5109/8030 cut-off events. For 96214/96269 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 48132 event pairs, 1600 based on Foata normal form. 44/7834 useless extension candidates. Maximal degree in co-relation 40434. Up to 7199 conditions per place. [2024-06-27 18:42:01,507 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 208 selfloop transitions, 29 changer transitions 0/244 dead transitions. [2024-06-27 18:42:01,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 244 transitions, 3349 flow [2024-06-27 18:42:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:42:01,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:42:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-27 18:42:01,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:42:01,525 INFO L175 Difference]: Start difference. First operand has 137 places, 221 transitions, 2751 flow. Second operand 5 states and 110 transitions. [2024-06-27 18:42:01,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 244 transitions, 3349 flow [2024-06-27 18:42:01,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 244 transitions, 3119 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:01,631 INFO L231 Difference]: Finished difference. Result has 137 places, 224 transitions, 2629 flow [2024-06-27 18:42:01,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2629, PETRI_PLACES=137, PETRI_TRANSITIONS=224} [2024-06-27 18:42:01,637 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-06-27 18:42:01,637 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 224 transitions, 2629 flow [2024-06-27 18:42:01,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:01,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:01,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:01,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:42:01,638 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:01,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:01,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1242983141, now seen corresponding path program 2 times [2024-06-27 18:42:01,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:01,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969228826] [2024-06-27 18:42:01,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:01,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:02,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:02,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969228826] [2024-06-27 18:42:02,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969228826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:02,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:02,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:02,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764494325] [2024-06-27 18:42:02,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:02,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:02,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:02,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:02,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:02,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 224 transitions, 2629 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:02,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:02,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:02,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:03,239 INFO L124 PetriNetUnfolderBase]: 5103/8016 cut-off events. [2024-06-27 18:42:03,239 INFO L125 PetriNetUnfolderBase]: For 97899/97954 co-relation queries the response was YES. [2024-06-27 18:42:03,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40899 conditions, 8016 events. 5103/8016 cut-off events. For 97899/97954 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 47952 event pairs, 1600 based on Foata normal form. 44/7822 useless extension candidates. Maximal degree in co-relation 40834. Up to 7158 conditions per place. [2024-06-27 18:42:03,302 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 215 selfloop transitions, 32 changer transitions 0/254 dead transitions. [2024-06-27 18:42:03,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 254 transitions, 3301 flow [2024-06-27 18:42:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 18:42:03,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-06-27 18:42:03,303 INFO L175 Difference]: Start difference. First operand has 137 places, 224 transitions, 2629 flow. Second operand 6 states and 130 transitions. [2024-06-27 18:42:03,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 254 transitions, 3301 flow [2024-06-27 18:42:03,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 254 transitions, 3235 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:03,414 INFO L231 Difference]: Finished difference. Result has 140 places, 227 transitions, 2673 flow [2024-06-27 18:42:03,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2673, PETRI_PLACES=140, PETRI_TRANSITIONS=227} [2024-06-27 18:42:03,415 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 88 predicate places. [2024-06-27 18:42:03,415 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 227 transitions, 2673 flow [2024-06-27 18:42:03,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:03,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:03,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:03,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:42:03,416 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:03,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:03,416 INFO L85 PathProgramCache]: Analyzing trace with hash -38768136, now seen corresponding path program 1 times [2024-06-27 18:42:03,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:03,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160879161] [2024-06-27 18:42:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:03,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:03,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160879161] [2024-06-27 18:42:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160879161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:03,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:03,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:03,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589008875] [2024-06-27 18:42:03,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:03,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:03,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:03,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:03,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:04,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:04,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 227 transitions, 2673 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:04,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:04,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:04,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:05,039 INFO L124 PetriNetUnfolderBase]: 5174/7904 cut-off events. [2024-06-27 18:42:05,040 INFO L125 PetriNetUnfolderBase]: For 99818/99818 co-relation queries the response was YES. [2024-06-27 18:42:05,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41402 conditions, 7904 events. 5174/7904 cut-off events. For 99818/99818 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 45906 event pairs, 1610 based on Foata normal form. 2/7739 useless extension candidates. Maximal degree in co-relation 41336. Up to 7306 conditions per place. [2024-06-27 18:42:05,099 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 245 selfloop transitions, 19 changer transitions 0/271 dead transitions. [2024-06-27 18:42:05,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 271 transitions, 3531 flow [2024-06-27 18:42:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:42:05,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:42:05,101 INFO L175 Difference]: Start difference. First operand has 140 places, 227 transitions, 2673 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:42:05,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 271 transitions, 3531 flow [2024-06-27 18:42:05,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 271 transitions, 3450 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:05,199 INFO L231 Difference]: Finished difference. Result has 144 places, 243 transitions, 2827 flow [2024-06-27 18:42:05,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2595, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2827, PETRI_PLACES=144, PETRI_TRANSITIONS=243} [2024-06-27 18:42:05,200 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-27 18:42:05,200 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 243 transitions, 2827 flow [2024-06-27 18:42:05,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:05,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:05,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:42:05,200 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:05,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1276057134, now seen corresponding path program 2 times [2024-06-27 18:42:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:05,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003197692] [2024-06-27 18:42:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:05,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003197692] [2024-06-27 18:42:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003197692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214934591] [2024-06-27 18:42:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:05,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:05,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:05,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:05,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 243 transitions, 2827 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:05,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:05,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:05,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:06,885 INFO L124 PetriNetUnfolderBase]: 5168/7877 cut-off events. [2024-06-27 18:42:06,885 INFO L125 PetriNetUnfolderBase]: For 104875/104875 co-relation queries the response was YES. [2024-06-27 18:42:06,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42878 conditions, 7877 events. 5168/7877 cut-off events. For 104875/104875 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 45474 event pairs, 1638 based on Foata normal form. 2/7718 useless extension candidates. Maximal degree in co-relation 42809. Up to 7343 conditions per place. [2024-06-27 18:42:06,944 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 243 selfloop transitions, 13 changer transitions 0/263 dead transitions. [2024-06-27 18:42:06,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 263 transitions, 3434 flow [2024-06-27 18:42:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-27 18:42:06,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-06-27 18:42:06,946 INFO L175 Difference]: Start difference. First operand has 144 places, 243 transitions, 2827 flow. Second operand 6 states and 123 transitions. [2024-06-27 18:42:06,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 263 transitions, 3434 flow [2024-06-27 18:42:07,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 263 transitions, 3406 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-27 18:42:07,066 INFO L231 Difference]: Finished difference. Result has 149 places, 244 transitions, 2840 flow [2024-06-27 18:42:07,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2840, PETRI_PLACES=149, PETRI_TRANSITIONS=244} [2024-06-27 18:42:07,067 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-06-27 18:42:07,067 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 244 transitions, 2840 flow [2024-06-27 18:42:07,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-27 18:42:07,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:07,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:07,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:42:07,067 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:07,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash 245596333, now seen corresponding path program 1 times [2024-06-27 18:42:07,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:07,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42826620] [2024-06-27 18:42:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:07,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42826620] [2024-06-27 18:42:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42826620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:07,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:07,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7309293] [2024-06-27 18:42:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:07,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:07,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:07,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:07,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:07,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:07,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 244 transitions, 2840 flow. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:07,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:07,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:07,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:09,070 INFO L124 PetriNetUnfolderBase]: 5163/8056 cut-off events. [2024-06-27 18:42:09,071 INFO L125 PetriNetUnfolderBase]: For 107958/107958 co-relation queries the response was YES. [2024-06-27 18:42:09,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43192 conditions, 8056 events. 5163/8056 cut-off events. For 107958/107958 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 47543 event pairs, 1625 based on Foata normal form. 2/7835 useless extension candidates. Maximal degree in co-relation 43120. Up to 7311 conditions per place. [2024-06-27 18:42:09,150 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 245 selfloop transitions, 18 changer transitions 0/270 dead transitions. [2024-06-27 18:42:09,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 270 transitions, 3518 flow [2024-06-27 18:42:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-27 18:42:09,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2024-06-27 18:42:09,151 INFO L175 Difference]: Start difference. First operand has 149 places, 244 transitions, 2840 flow. Second operand 6 states and 127 transitions. [2024-06-27 18:42:09,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 270 transitions, 3518 flow [2024-06-27 18:42:09,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 270 transitions, 3492 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:09,291 INFO L231 Difference]: Finished difference. Result has 152 places, 246 transitions, 2879 flow [2024-06-27 18:42:09,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2879, PETRI_PLACES=152, PETRI_TRANSITIONS=246} [2024-06-27 18:42:09,293 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-27 18:42:09,293 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 246 transitions, 2879 flow [2024-06-27 18:42:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:09,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:09,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:42:09,293 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:09,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1228347376, now seen corresponding path program 1 times [2024-06-27 18:42:09,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:09,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519872295] [2024-06-27 18:42:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:09,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:10,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:10,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519872295] [2024-06-27 18:42:10,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519872295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:10,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:10,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:10,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875566929] [2024-06-27 18:42:10,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:10,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:10,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:10,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:10,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:10,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:10,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 246 transitions, 2879 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:10,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:10,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:10,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:11,617 INFO L124 PetriNetUnfolderBase]: 4952/7890 cut-off events. [2024-06-27 18:42:11,618 INFO L125 PetriNetUnfolderBase]: For 113480/113538 co-relation queries the response was YES. [2024-06-27 18:42:11,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43659 conditions, 7890 events. 4952/7890 cut-off events. For 113480/113538 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 48562 event pairs, 1143 based on Foata normal form. 49/7702 useless extension candidates. Maximal degree in co-relation 43586. Up to 6753 conditions per place. [2024-06-27 18:42:11,685 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 225 selfloop transitions, 77 changer transitions 0/311 dead transitions. [2024-06-27 18:42:11,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 311 transitions, 3884 flow [2024-06-27 18:42:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:42:11,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 18:42:11,687 INFO L175 Difference]: Start difference. First operand has 152 places, 246 transitions, 2879 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:42:11,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 311 transitions, 3884 flow [2024-06-27 18:42:11,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 311 transitions, 3837 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:11,815 INFO L231 Difference]: Finished difference. Result has 158 places, 261 transitions, 3258 flow [2024-06-27 18:42:11,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3258, PETRI_PLACES=158, PETRI_TRANSITIONS=261} [2024-06-27 18:42:11,816 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-27 18:42:11,816 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 261 transitions, 3258 flow [2024-06-27 18:42:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:11,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:11,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:11,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:42:11,817 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:11,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1980560444, now seen corresponding path program 2 times [2024-06-27 18:42:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:11,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090108708] [2024-06-27 18:42:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:11,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:12,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:12,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090108708] [2024-06-27 18:42:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090108708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:12,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264556229] [2024-06-27 18:42:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:12,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:12,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:12,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:12,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 261 transitions, 3258 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:12,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:12,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:12,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:14,336 INFO L124 PetriNetUnfolderBase]: 5039/8050 cut-off events. [2024-06-27 18:42:14,336 INFO L125 PetriNetUnfolderBase]: For 133506/133566 co-relation queries the response was YES. [2024-06-27 18:42:14,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46340 conditions, 8050 events. 5039/8050 cut-off events. For 133506/133566 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 50039 event pairs, 1377 based on Foata normal form. 51/7856 useless extension candidates. Maximal degree in co-relation 46264. Up to 6739 conditions per place. [2024-06-27 18:42:14,414 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 215 selfloop transitions, 94 changer transitions 0/318 dead transitions. [2024-06-27 18:42:14,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 318 transitions, 4222 flow [2024-06-27 18:42:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:42:14,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 18:42:14,422 INFO L175 Difference]: Start difference. First operand has 158 places, 261 transitions, 3258 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:42:14,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 318 transitions, 4222 flow [2024-06-27 18:42:14,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 318 transitions, 4074 flow, removed 73 selfloop flow, removed 1 redundant places. [2024-06-27 18:42:14,603 INFO L231 Difference]: Finished difference. Result has 167 places, 268 transitions, 3535 flow [2024-06-27 18:42:14,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3110, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3535, PETRI_PLACES=167, PETRI_TRANSITIONS=268} [2024-06-27 18:42:14,604 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 18:42:14,604 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 268 transitions, 3535 flow [2024-06-27 18:42:14,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:14,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:14,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:14,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:42:14,605 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:14,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash -645875210, now seen corresponding path program 3 times [2024-06-27 18:42:14,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:14,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608753311] [2024-06-27 18:42:14,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:14,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:15,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608753311] [2024-06-27 18:42:15,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608753311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:15,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:15,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:15,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756300730] [2024-06-27 18:42:15,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:15,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:15,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:15,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:15,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 268 transitions, 3535 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:15,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:15,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:15,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:17,129 INFO L124 PetriNetUnfolderBase]: 5097/8131 cut-off events. [2024-06-27 18:42:17,129 INFO L125 PetriNetUnfolderBase]: For 152345/152405 co-relation queries the response was YES. [2024-06-27 18:42:17,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48506 conditions, 8131 events. 5097/8131 cut-off events. For 152345/152405 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 50395 event pairs, 1389 based on Foata normal form. 51/7941 useless extension candidates. Maximal degree in co-relation 48425. Up to 6822 conditions per place. [2024-06-27 18:42:17,202 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 216 selfloop transitions, 100 changer transitions 0/325 dead transitions. [2024-06-27 18:42:17,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 325 transitions, 4537 flow [2024-06-27 18:42:17,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:17,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:17,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:42:17,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 18:42:17,203 INFO L175 Difference]: Start difference. First operand has 167 places, 268 transitions, 3535 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:42:17,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 325 transitions, 4537 flow [2024-06-27 18:42:17,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 325 transitions, 4381 flow, removed 66 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:17,417 INFO L231 Difference]: Finished difference. Result has 174 places, 275 transitions, 3798 flow [2024-06-27 18:42:17,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3798, PETRI_PLACES=174, PETRI_TRANSITIONS=275} [2024-06-27 18:42:17,417 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 122 predicate places. [2024-06-27 18:42:17,417 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 275 transitions, 3798 flow [2024-06-27 18:42:17,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:17,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:17,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:17,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:42:17,418 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:17,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:17,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1326775194, now seen corresponding path program 1 times [2024-06-27 18:42:17,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:17,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585065695] [2024-06-27 18:42:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:18,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585065695] [2024-06-27 18:42:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585065695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:18,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:18,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:18,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358521771] [2024-06-27 18:42:18,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:18,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:18,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 275 transitions, 3798 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:18,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:18,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:18,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:19,821 INFO L124 PetriNetUnfolderBase]: 5538/8630 cut-off events. [2024-06-27 18:42:19,821 INFO L125 PetriNetUnfolderBase]: For 168549/168621 co-relation queries the response was YES. [2024-06-27 18:42:19,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51670 conditions, 8630 events. 5538/8630 cut-off events. For 168549/168621 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 51562 event pairs, 1491 based on Foata normal form. 58/8452 useless extension candidates. Maximal degree in co-relation 51586. Up to 7516 conditions per place. [2024-06-27 18:42:19,901 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 251 selfloop transitions, 84 changer transitions 0/342 dead transitions. [2024-06-27 18:42:19,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 342 transitions, 4829 flow [2024-06-27 18:42:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:19,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 18:42:19,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-27 18:42:19,903 INFO L175 Difference]: Start difference. First operand has 174 places, 275 transitions, 3798 flow. Second operand 9 states and 209 transitions. [2024-06-27 18:42:19,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 342 transitions, 4829 flow [2024-06-27 18:42:20,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 342 transitions, 4575 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:20,203 INFO L231 Difference]: Finished difference. Result has 180 places, 283 transitions, 3867 flow [2024-06-27 18:42:20,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3867, PETRI_PLACES=180, PETRI_TRANSITIONS=283} [2024-06-27 18:42:20,203 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 128 predicate places. [2024-06-27 18:42:20,203 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 283 transitions, 3867 flow [2024-06-27 18:42:20,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:20,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:20,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:20,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:42:20,204 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:20,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1531377821, now seen corresponding path program 1 times [2024-06-27 18:42:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:20,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299165726] [2024-06-27 18:42:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:20,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299165726] [2024-06-27 18:42:20,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299165726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:20,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:20,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983291727] [2024-06-27 18:42:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:20,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:20,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:20,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 283 transitions, 3867 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:20,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:20,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:20,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:22,205 INFO L124 PetriNetUnfolderBase]: 5670/8797 cut-off events. [2024-06-27 18:42:22,205 INFO L125 PetriNetUnfolderBase]: For 178006/178063 co-relation queries the response was YES. [2024-06-27 18:42:22,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53928 conditions, 8797 events. 5670/8797 cut-off events. For 178006/178063 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 52319 event pairs, 1541 based on Foata normal form. 48/8614 useless extension candidates. Maximal degree in co-relation 53841. Up to 7789 conditions per place. [2024-06-27 18:42:22,292 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 261 selfloop transitions, 69 changer transitions 0/337 dead transitions. [2024-06-27 18:42:22,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 337 transitions, 4986 flow [2024-06-27 18:42:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:22,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 18:42:22,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-06-27 18:42:22,293 INFO L175 Difference]: Start difference. First operand has 180 places, 283 transitions, 3867 flow. Second operand 8 states and 174 transitions. [2024-06-27 18:42:22,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 337 transitions, 4986 flow [2024-06-27 18:42:22,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 337 transitions, 4737 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:22,534 INFO L231 Difference]: Finished difference. Result has 183 places, 298 transitions, 4053 flow [2024-06-27 18:42:22,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3618, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4053, PETRI_PLACES=183, PETRI_TRANSITIONS=298} [2024-06-27 18:42:22,535 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 131 predicate places. [2024-06-27 18:42:22,535 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 298 transitions, 4053 flow [2024-06-27 18:42:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:22,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:22,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:22,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:42:22,536 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:22,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2137033098, now seen corresponding path program 2 times [2024-06-27 18:42:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:22,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761618733] [2024-06-27 18:42:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761618733] [2024-06-27 18:42:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761618733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373735695] [2024-06-27 18:42:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:23,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:23,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:23,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:23,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 298 transitions, 4053 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:23,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:23,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:23,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:25,197 INFO L124 PetriNetUnfolderBase]: 5774/8956 cut-off events. [2024-06-27 18:42:25,197 INFO L125 PetriNetUnfolderBase]: For 188126/188183 co-relation queries the response was YES. [2024-06-27 18:42:25,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55306 conditions, 8956 events. 5774/8956 cut-off events. For 188126/188183 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 53427 event pairs, 1449 based on Foata normal form. 48/8768 useless extension candidates. Maximal degree in co-relation 55217. Up to 7766 conditions per place. [2024-06-27 18:42:25,292 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 312 selfloop transitions, 52 changer transitions 0/371 dead transitions. [2024-06-27 18:42:25,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 371 transitions, 5217 flow [2024-06-27 18:42:25,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:25,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 18:42:25,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-27 18:42:25,293 INFO L175 Difference]: Start difference. First operand has 183 places, 298 transitions, 4053 flow. Second operand 9 states and 211 transitions. [2024-06-27 18:42:25,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 371 transitions, 5217 flow [2024-06-27 18:42:25,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 371 transitions, 5006 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:25,582 INFO L231 Difference]: Finished difference. Result has 190 places, 310 transitions, 4060 flow [2024-06-27 18:42:25,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3842, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4060, PETRI_PLACES=190, PETRI_TRANSITIONS=310} [2024-06-27 18:42:25,583 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 18:42:25,583 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 310 transitions, 4060 flow [2024-06-27 18:42:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:25,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:25,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:25,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:42:25,584 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:25,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1251525066, now seen corresponding path program 4 times [2024-06-27 18:42:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207733102] [2024-06-27 18:42:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:25,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:26,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:26,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207733102] [2024-06-27 18:42:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207733102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:26,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966861017] [2024-06-27 18:42:26,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:26,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:26,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:26,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 310 transitions, 4060 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:26,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:26,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:26,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:28,209 INFO L124 PetriNetUnfolderBase]: 5443/8614 cut-off events. [2024-06-27 18:42:28,209 INFO L125 PetriNetUnfolderBase]: For 192796/192825 co-relation queries the response was YES. [2024-06-27 18:42:28,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55064 conditions, 8614 events. 5443/8614 cut-off events. For 192796/192825 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53243 event pairs, 1184 based on Foata normal form. 14/8374 useless extension candidates. Maximal degree in co-relation 54972. Up to 7255 conditions per place. [2024-06-27 18:42:28,303 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 241 selfloop transitions, 109 changer transitions 0/361 dead transitions. [2024-06-27 18:42:28,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 361 transitions, 5046 flow [2024-06-27 18:42:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:42:28,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:42:28,305 INFO L175 Difference]: Start difference. First operand has 190 places, 310 transitions, 4060 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:42:28,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 361 transitions, 5046 flow [2024-06-27 18:42:28,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 361 transitions, 4954 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:28,627 INFO L231 Difference]: Finished difference. Result has 195 places, 313 transitions, 4294 flow [2024-06-27 18:42:28,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3968, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4294, PETRI_PLACES=195, PETRI_TRANSITIONS=313} [2024-06-27 18:42:28,628 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-27 18:42:28,628 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 313 transitions, 4294 flow [2024-06-27 18:42:28,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:28,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:28,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:28,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:42:28,629 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:28,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1245095976, now seen corresponding path program 5 times [2024-06-27 18:42:28,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:28,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608942524] [2024-06-27 18:42:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:29,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608942524] [2024-06-27 18:42:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608942524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:29,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879485450] [2024-06-27 18:42:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:29,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:29,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:29,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 313 transitions, 4294 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:29,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:29,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:29,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:31,188 INFO L124 PetriNetUnfolderBase]: 5680/8989 cut-off events. [2024-06-27 18:42:31,188 INFO L125 PetriNetUnfolderBase]: For 235236/235300 co-relation queries the response was YES. [2024-06-27 18:42:31,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59139 conditions, 8989 events. 5680/8989 cut-off events. For 235236/235300 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 56103 event pairs, 1327 based on Foata normal form. 72/8815 useless extension candidates. Maximal degree in co-relation 59045. Up to 7413 conditions per place. [2024-06-27 18:42:31,286 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 305 selfloop transitions, 55 changer transitions 0/371 dead transitions. [2024-06-27 18:42:31,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 371 transitions, 5463 flow [2024-06-27 18:42:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:42:31,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-27 18:42:31,287 INFO L175 Difference]: Start difference. First operand has 195 places, 313 transitions, 4294 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:42:31,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 371 transitions, 5463 flow [2024-06-27 18:42:31,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 371 transitions, 5161 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:31,611 INFO L231 Difference]: Finished difference. Result has 197 places, 316 transitions, 4219 flow [2024-06-27 18:42:31,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4219, PETRI_PLACES=197, PETRI_TRANSITIONS=316} [2024-06-27 18:42:31,611 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 145 predicate places. [2024-06-27 18:42:31,612 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 316 transitions, 4219 flow [2024-06-27 18:42:31,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:31,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:31,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:42:31,612 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:31,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1251529716, now seen corresponding path program 6 times [2024-06-27 18:42:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:31,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933832212] [2024-06-27 18:42:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933832212] [2024-06-27 18:42:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933832212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:32,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596407255] [2024-06-27 18:42:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:32,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 18:42:32,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 316 transitions, 4219 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:32,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:32,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 18:42:32,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:34,326 INFO L124 PetriNetUnfolderBase]: 5694/9029 cut-off events. [2024-06-27 18:42:34,327 INFO L125 PetriNetUnfolderBase]: For 239475/239504 co-relation queries the response was YES. [2024-06-27 18:42:34,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60027 conditions, 9029 events. 5694/9029 cut-off events. For 239475/239504 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56554 event pairs, 1224 based on Foata normal form. 14/8783 useless extension candidates. Maximal degree in co-relation 59932. Up to 7629 conditions per place. [2024-06-27 18:42:34,412 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 249 selfloop transitions, 109 changer transitions 0/369 dead transitions. [2024-06-27 18:42:34,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 369 transitions, 5295 flow [2024-06-27 18:42:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:42:34,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-27 18:42:34,413 INFO L175 Difference]: Start difference. First operand has 197 places, 316 transitions, 4219 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:42:34,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 369 transitions, 5295 flow [2024-06-27 18:42:34,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 369 transitions, 5132 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:34,746 INFO L231 Difference]: Finished difference. Result has 200 places, 321 transitions, 4469 flow [2024-06-27 18:42:34,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4056, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4469, PETRI_PLACES=200, PETRI_TRANSITIONS=321} [2024-06-27 18:42:34,747 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 148 predicate places. [2024-06-27 18:42:34,747 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 321 transitions, 4469 flow [2024-06-27 18:42:34,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:34,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:34,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:42:34,748 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:34,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1251345142, now seen corresponding path program 3 times [2024-06-27 18:42:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:34,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970645596] [2024-06-27 18:42:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:34,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:35,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:35,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970645596] [2024-06-27 18:42:35,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970645596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:35,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:35,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:35,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98966174] [2024-06-27 18:42:35,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:35,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:35,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:35,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:35,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:35,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:35,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 321 transitions, 4469 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:35,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:35,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:35,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:37,602 INFO L124 PetriNetUnfolderBase]: 6215/9587 cut-off events. [2024-06-27 18:42:37,602 INFO L125 PetriNetUnfolderBase]: For 250673/250692 co-relation queries the response was YES. [2024-06-27 18:42:37,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62395 conditions, 9587 events. 6215/9587 cut-off events. For 250673/250692 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 57734 event pairs, 1332 based on Foata normal form. 14/9367 useless extension candidates. Maximal degree in co-relation 62298. Up to 7544 conditions per place. [2024-06-27 18:42:37,704 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 246 selfloop transitions, 139 changer transitions 0/392 dead transitions. [2024-06-27 18:42:37,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 392 transitions, 6000 flow [2024-06-27 18:42:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:42:37,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529891304347826 [2024-06-27 18:42:37,706 INFO L175 Difference]: Start difference. First operand has 200 places, 321 transitions, 4469 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:42:37,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 392 transitions, 6000 flow [2024-06-27 18:42:38,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 392 transitions, 5714 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:38,111 INFO L231 Difference]: Finished difference. Result has 207 places, 337 transitions, 4936 flow [2024-06-27 18:42:38,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4183, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4936, PETRI_PLACES=207, PETRI_TRANSITIONS=337} [2024-06-27 18:42:38,111 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 155 predicate places. [2024-06-27 18:42:38,112 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 337 transitions, 4936 flow [2024-06-27 18:42:38,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:38,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:38,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:38,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:42:38,112 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:38,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1245089032, now seen corresponding path program 4 times [2024-06-27 18:42:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:38,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766204013] [2024-06-27 18:42:38,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:38,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:38,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:38,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766204013] [2024-06-27 18:42:38,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766204013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:38,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:38,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:38,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587432616] [2024-06-27 18:42:38,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:38,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:38,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:39,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:39,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 337 transitions, 4936 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:39,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:39,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:40,787 INFO L124 PetriNetUnfolderBase]: 6205/9521 cut-off events. [2024-06-27 18:42:40,787 INFO L125 PetriNetUnfolderBase]: For 262292/262349 co-relation queries the response was YES. [2024-06-27 18:42:40,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64846 conditions, 9521 events. 6205/9521 cut-off events. For 262292/262349 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 57247 event pairs, 1501 based on Foata normal form. 48/9358 useless extension candidates. Maximal degree in co-relation 64744. Up to 8412 conditions per place. [2024-06-27 18:42:40,894 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 335 selfloop transitions, 53 changer transitions 0/395 dead transitions. [2024-06-27 18:42:40,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 395 transitions, 5961 flow [2024-06-27 18:42:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:40,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 18:42:40,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-27 18:42:40,896 INFO L175 Difference]: Start difference. First operand has 207 places, 337 transitions, 4936 flow. Second operand 9 states and 209 transitions. [2024-06-27 18:42:40,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 395 transitions, 5961 flow [2024-06-27 18:42:41,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 395 transitions, 5753 flow, removed 77 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:41,370 INFO L231 Difference]: Finished difference. Result has 214 places, 337 transitions, 4843 flow [2024-06-27 18:42:41,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4728, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4843, PETRI_PLACES=214, PETRI_TRANSITIONS=337} [2024-06-27 18:42:41,371 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-27 18:42:41,371 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 337 transitions, 4843 flow [2024-06-27 18:42:41,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:41,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:41,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:41,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:42:41,372 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:41,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1531019771, now seen corresponding path program 2 times [2024-06-27 18:42:41,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:41,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589991157] [2024-06-27 18:42:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589991157] [2024-06-27 18:42:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589991157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660456251] [2024-06-27 18:42:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:41,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:41,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:41,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 337 transitions, 4843 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:41,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:41,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:41,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:43,465 INFO L124 PetriNetUnfolderBase]: 6193/9476 cut-off events. [2024-06-27 18:42:43,465 INFO L125 PetriNetUnfolderBase]: For 254620/254639 co-relation queries the response was YES. [2024-06-27 18:42:43,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64036 conditions, 9476 events. 6193/9476 cut-off events. For 254620/254639 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 56475 event pairs, 1659 based on Foata normal form. 14/9283 useless extension candidates. Maximal degree in co-relation 63932. Up to 8565 conditions per place. [2024-06-27 18:42:43,566 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 287 selfloop transitions, 65 changer transitions 0/359 dead transitions. [2024-06-27 18:42:43,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 359 transitions, 5641 flow [2024-06-27 18:42:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:42:43,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 18:42:43,567 INFO L175 Difference]: Start difference. First operand has 214 places, 337 transitions, 4843 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:42:43,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 359 transitions, 5641 flow [2024-06-27 18:42:43,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 359 transitions, 5413 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-27 18:42:43,992 INFO L231 Difference]: Finished difference. Result has 210 places, 337 transitions, 4752 flow [2024-06-27 18:42:43,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4615, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4752, PETRI_PLACES=210, PETRI_TRANSITIONS=337} [2024-06-27 18:42:43,993 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 158 predicate places. [2024-06-27 18:42:43,993 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 337 transitions, 4752 flow [2024-06-27 18:42:43,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:43,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:43,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:43,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:42:43,993 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:43,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash -976939707, now seen corresponding path program 3 times [2024-06-27 18:42:43,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:43,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794535130] [2024-06-27 18:42:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:43,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:44,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794535130] [2024-06-27 18:42:44,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794535130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:44,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:44,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409005776] [2024-06-27 18:42:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:44,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:44,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:44,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:44,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 337 transitions, 4752 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:44,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:44,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:44,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:46,298 INFO L124 PetriNetUnfolderBase]: 6181/9454 cut-off events. [2024-06-27 18:42:46,298 INFO L125 PetriNetUnfolderBase]: For 244934/244953 co-relation queries the response was YES. [2024-06-27 18:42:46,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62737 conditions, 9454 events. 6181/9454 cut-off events. For 244934/244953 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56256 event pairs, 1669 based on Foata normal form. 14/9263 useless extension candidates. Maximal degree in co-relation 62634. Up to 8480 conditions per place. [2024-06-27 18:42:46,393 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 293 selfloop transitions, 72 changer transitions 0/372 dead transitions. [2024-06-27 18:42:46,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 372 transitions, 5754 flow [2024-06-27 18:42:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 18:42:46,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468944099378882 [2024-06-27 18:42:46,395 INFO L175 Difference]: Start difference. First operand has 210 places, 337 transitions, 4752 flow. Second operand 7 states and 151 transitions. [2024-06-27 18:42:46,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 372 transitions, 5754 flow [2024-06-27 18:42:46,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 372 transitions, 5624 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:46,754 INFO L231 Difference]: Finished difference. Result has 213 places, 345 transitions, 4947 flow [2024-06-27 18:42:46,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4622, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4947, PETRI_PLACES=213, PETRI_TRANSITIONS=345} [2024-06-27 18:42:46,755 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 161 predicate places. [2024-06-27 18:42:46,755 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 345 transitions, 4947 flow [2024-06-27 18:42:46,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:46,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:46,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:42:46,756 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:46,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1201961135, now seen corresponding path program 1 times [2024-06-27 18:42:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:46,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98761903] [2024-06-27 18:42:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:46,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:47,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98761903] [2024-06-27 18:42:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98761903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:47,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:47,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:47,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661414542] [2024-06-27 18:42:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:47,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:47,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:47,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:47,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:47,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:47,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 345 transitions, 4947 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:47,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:47,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:47,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:49,208 INFO L124 PetriNetUnfolderBase]: 6252/9557 cut-off events. [2024-06-27 18:42:49,208 INFO L125 PetriNetUnfolderBase]: For 257901/257901 co-relation queries the response was YES. [2024-06-27 18:42:49,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64504 conditions, 9557 events. 6252/9557 cut-off events. For 257901/257901 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 57018 event pairs, 1657 based on Foata normal form. 2/9359 useless extension candidates. Maximal degree in co-relation 64399. Up to 8773 conditions per place. [2024-06-27 18:42:49,315 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 356 selfloop transitions, 29 changer transitions 0/392 dead transitions. [2024-06-27 18:42:49,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 392 transitions, 6134 flow [2024-06-27 18:42:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-27 18:42:49,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-27 18:42:49,317 INFO L175 Difference]: Start difference. First operand has 213 places, 345 transitions, 4947 flow. Second operand 7 states and 156 transitions. [2024-06-27 18:42:49,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 392 transitions, 6134 flow [2024-06-27 18:42:49,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 392 transitions, 5922 flow, removed 66 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:49,817 INFO L231 Difference]: Finished difference. Result has 218 places, 356 transitions, 4995 flow [2024-06-27 18:42:49,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4735, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4995, PETRI_PLACES=218, PETRI_TRANSITIONS=356} [2024-06-27 18:42:49,817 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 166 predicate places. [2024-06-27 18:42:49,818 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 356 transitions, 4995 flow [2024-06-27 18:42:49,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:49,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:49,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:49,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:42:49,818 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:49,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:49,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1212006817, now seen corresponding path program 2 times [2024-06-27 18:42:49,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:49,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300699314] [2024-06-27 18:42:49,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:50,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300699314] [2024-06-27 18:42:50,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300699314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:50,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:50,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:50,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097560503] [2024-06-27 18:42:50,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:50,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:50,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:50,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:50,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:50,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 356 transitions, 4995 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:50,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:50,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:50,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:52,196 INFO L124 PetriNetUnfolderBase]: 6292/9623 cut-off events. [2024-06-27 18:42:52,196 INFO L125 PetriNetUnfolderBase]: For 271727/271727 co-relation queries the response was YES. [2024-06-27 18:42:52,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66175 conditions, 9623 events. 6292/9623 cut-off events. For 271727/271727 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 57523 event pairs, 1670 based on Foata normal form. 2/9421 useless extension candidates. Maximal degree in co-relation 66067. Up to 8886 conditions per place. [2024-06-27 18:42:52,320 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 362 selfloop transitions, 24 changer transitions 0/393 dead transitions. [2024-06-27 18:42:52,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 393 transitions, 6074 flow [2024-06-27 18:42:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 18:42:52,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468944099378882 [2024-06-27 18:42:52,321 INFO L175 Difference]: Start difference. First operand has 218 places, 356 transitions, 4995 flow. Second operand 7 states and 151 transitions. [2024-06-27 18:42:52,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 393 transitions, 6074 flow [2024-06-27 18:42:52,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 393 transitions, 5943 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:52,840 INFO L231 Difference]: Finished difference. Result has 222 places, 360 transitions, 5011 flow [2024-06-27 18:42:52,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4884, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5011, PETRI_PLACES=222, PETRI_TRANSITIONS=360} [2024-06-27 18:42:52,840 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 170 predicate places. [2024-06-27 18:42:52,840 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 360 transitions, 5011 flow [2024-06-27 18:42:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:52,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:52,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:52,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:42:52,841 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:52,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:52,841 INFO L85 PathProgramCache]: Analyzing trace with hash 903066301, now seen corresponding path program 3 times [2024-06-27 18:42:52,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:52,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204702722] [2024-06-27 18:42:52,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:52,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204702722] [2024-06-27 18:42:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204702722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:53,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259927438] [2024-06-27 18:42:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:53,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:53,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 360 transitions, 5011 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:53,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:53,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:53,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:55,118 INFO L124 PetriNetUnfolderBase]: 6286/9593 cut-off events. [2024-06-27 18:42:55,119 INFO L125 PetriNetUnfolderBase]: For 274682/274682 co-relation queries the response was YES. [2024-06-27 18:42:55,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66099 conditions, 9593 events. 6286/9593 cut-off events. For 274682/274682 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57062 event pairs, 1696 based on Foata normal form. 2/9398 useless extension candidates. Maximal degree in co-relation 65989. Up to 8920 conditions per place. [2024-06-27 18:42:55,211 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 362 selfloop transitions, 17 changer transitions 0/386 dead transitions. [2024-06-27 18:42:55,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 386 transitions, 5914 flow [2024-06-27 18:42:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 18:42:55,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440993788819876 [2024-06-27 18:42:55,213 INFO L175 Difference]: Start difference. First operand has 222 places, 360 transitions, 5011 flow. Second operand 7 states and 143 transitions. [2024-06-27 18:42:55,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 386 transitions, 5914 flow [2024-06-27 18:42:55,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 386 transitions, 5787 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:55,697 INFO L231 Difference]: Finished difference. Result has 224 places, 361 transitions, 4936 flow [2024-06-27 18:42:55,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4886, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4936, PETRI_PLACES=224, PETRI_TRANSITIONS=361} [2024-06-27 18:42:55,697 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 172 predicate places. [2024-06-27 18:42:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 361 transitions, 4936 flow [2024-06-27 18:42:55,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:55,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:55,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:55,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:42:55,698 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:55,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash -976746360, now seen corresponding path program 1 times [2024-06-27 18:42:55,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:55,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169617572] [2024-06-27 18:42:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:55,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:56,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:56,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169617572] [2024-06-27 18:42:56,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169617572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:56,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:56,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477433839] [2024-06-27 18:42:56,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:56,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:56,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:56,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:56,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:42:56,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 361 transitions, 4936 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:56,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:56,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:42:56,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:58,026 INFO L124 PetriNetUnfolderBase]: 6299/9617 cut-off events. [2024-06-27 18:42:58,027 INFO L125 PetriNetUnfolderBase]: For 278976/278976 co-relation queries the response was YES. [2024-06-27 18:42:58,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66254 conditions, 9617 events. 6299/9617 cut-off events. For 278976/278976 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 57277 event pairs, 1695 based on Foata normal form. 1/9419 useless extension candidates. Maximal degree in co-relation 66143. Up to 8926 conditions per place. [2024-06-27 18:42:58,154 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 356 selfloop transitions, 25 changer transitions 0/388 dead transitions. [2024-06-27 18:42:58,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 388 transitions, 5882 flow [2024-06-27 18:42:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 18:42:58,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-06-27 18:42:58,156 INFO L175 Difference]: Start difference. First operand has 224 places, 361 transitions, 4936 flow. Second operand 6 states and 128 transitions. [2024-06-27 18:42:58,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 388 transitions, 5882 flow [2024-06-27 18:42:58,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 388 transitions, 5844 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:58,663 INFO L231 Difference]: Finished difference. Result has 226 places, 364 transitions, 5013 flow [2024-06-27 18:42:58,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4898, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5013, PETRI_PLACES=226, PETRI_TRANSITIONS=364} [2024-06-27 18:42:58,664 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 174 predicate places. [2024-06-27 18:42:58,664 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 364 transitions, 5013 flow [2024-06-27 18:42:58,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:42:58,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:58,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:58,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:42:58,665 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:42:58,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1323174349, now seen corresponding path program 1 times [2024-06-27 18:42:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:58,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744502365] [2024-06-27 18:42:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:58,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744502365] [2024-06-27 18:43:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744502365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:00,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:00,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:00,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435044912] [2024-06-27 18:43:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:00,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:00,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:00,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:00,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:00,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 364 transitions, 5013 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:00,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:00,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:00,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:02,051 INFO L124 PetriNetUnfolderBase]: 6310/9673 cut-off events. [2024-06-27 18:43:02,051 INFO L125 PetriNetUnfolderBase]: For 288401/288458 co-relation queries the response was YES. [2024-06-27 18:43:02,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67397 conditions, 9673 events. 6310/9673 cut-off events. For 288401/288458 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 58065 event pairs, 1562 based on Foata normal form. 46/9505 useless extension candidates. Maximal degree in co-relation 67284. Up to 8442 conditions per place. [2024-06-27 18:43:02,178 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 305 selfloop transitions, 113 changer transitions 0/425 dead transitions. [2024-06-27 18:43:02,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 425 transitions, 6250 flow [2024-06-27 18:43:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:43:02,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-27 18:43:02,179 INFO L175 Difference]: Start difference. First operand has 226 places, 364 transitions, 5013 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:43:02,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 425 transitions, 6250 flow [2024-06-27 18:43:02,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 425 transitions, 6171 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:02,917 INFO L231 Difference]: Finished difference. Result has 231 places, 375 transitions, 5420 flow [2024-06-27 18:43:02,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4940, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5420, PETRI_PLACES=231, PETRI_TRANSITIONS=375} [2024-06-27 18:43:02,918 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 179 predicate places. [2024-06-27 18:43:02,918 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 375 transitions, 5420 flow [2024-06-27 18:43:02,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:02,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:02,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:43:02,918 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:02,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -121532128, now seen corresponding path program 1 times [2024-06-27 18:43:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624515898] [2024-06-27 18:43:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:03,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:03,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624515898] [2024-06-27 18:43:03,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624515898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:03,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:03,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:03,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780246189] [2024-06-27 18:43:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:03,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:03,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:03,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:03,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:03,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:03,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 375 transitions, 5420 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:03,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:03,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:03,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:05,980 INFO L124 PetriNetUnfolderBase]: 6542/10034 cut-off events. [2024-06-27 18:43:05,981 INFO L125 PetriNetUnfolderBase]: For 332261/332333 co-relation queries the response was YES. [2024-06-27 18:43:06,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71737 conditions, 10034 events. 6542/10034 cut-off events. For 332261/332333 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 60531 event pairs, 1587 based on Foata normal form. 74/9889 useless extension candidates. Maximal degree in co-relation 71622. Up to 8675 conditions per place. [2024-06-27 18:43:06,120 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 357 selfloop transitions, 88 changer transitions 0/452 dead transitions. [2024-06-27 18:43:06,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 452 transitions, 6731 flow [2024-06-27 18:43:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:43:06,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 18:43:06,121 INFO L175 Difference]: Start difference. First operand has 231 places, 375 transitions, 5420 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:43:06,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 452 transitions, 6731 flow [2024-06-27 18:43:06,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 452 transitions, 6452 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:06,819 INFO L231 Difference]: Finished difference. Result has 236 places, 379 transitions, 5444 flow [2024-06-27 18:43:06,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5444, PETRI_PLACES=236, PETRI_TRANSITIONS=379} [2024-06-27 18:43:06,819 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 184 predicate places. [2024-06-27 18:43:06,819 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 379 transitions, 5444 flow [2024-06-27 18:43:06,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:06,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:06,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:43:06,820 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:06,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -453932153, now seen corresponding path program 1 times [2024-06-27 18:43:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343949504] [2024-06-27 18:43:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:06,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:07,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:07,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343949504] [2024-06-27 18:43:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343949504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:07,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:07,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986601951] [2024-06-27 18:43:07,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:07,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:07,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:07,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:07,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 379 transitions, 5444 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:07,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:07,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:07,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:09,115 INFO L124 PetriNetUnfolderBase]: 6654/10288 cut-off events. [2024-06-27 18:43:09,115 INFO L125 PetriNetUnfolderBase]: For 339864/339921 co-relation queries the response was YES. [2024-06-27 18:43:09,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73318 conditions, 10288 events. 6654/10288 cut-off events. For 339864/339921 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 63260 event pairs, 1548 based on Foata normal form. 46/10083 useless extension candidates. Maximal degree in co-relation 73202. Up to 9334 conditions per place. [2024-06-27 18:43:09,252 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 379 selfloop transitions, 43 changer transitions 0/429 dead transitions. [2024-06-27 18:43:09,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 429 transitions, 6845 flow [2024-06-27 18:43:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 18:43:09,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2024-06-27 18:43:09,254 INFO L175 Difference]: Start difference. First operand has 236 places, 379 transitions, 5444 flow. Second operand 7 states and 152 transitions. [2024-06-27 18:43:09,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 429 transitions, 6845 flow [2024-06-27 18:43:09,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 429 transitions, 6620 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:09,887 INFO L231 Difference]: Finished difference. Result has 237 places, 395 transitions, 5622 flow [2024-06-27 18:43:09,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5219, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5622, PETRI_PLACES=237, PETRI_TRANSITIONS=395} [2024-06-27 18:43:09,888 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-06-27 18:43:09,888 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 395 transitions, 5622 flow [2024-06-27 18:43:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:09,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:09,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:43:09,892 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:09,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash -446343353, now seen corresponding path program 2 times [2024-06-27 18:43:09,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:09,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088940758] [2024-06-27 18:43:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:09,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088940758] [2024-06-27 18:43:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088940758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:10,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:10,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059583828] [2024-06-27 18:43:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:10,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:10,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:10,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:10,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:10,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:10,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 395 transitions, 5622 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:10,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:10,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:10,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:12,385 INFO L124 PetriNetUnfolderBase]: 6648/10175 cut-off events. [2024-06-27 18:43:12,386 INFO L125 PetriNetUnfolderBase]: For 335420/335477 co-relation queries the response was YES. [2024-06-27 18:43:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73649 conditions, 10175 events. 6648/10175 cut-off events. For 335420/335477 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 61388 event pairs, 1670 based on Foata normal form. 46/10005 useless extension candidates. Maximal degree in co-relation 73530. Up to 9420 conditions per place. [2024-06-27 18:43:12,517 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 384 selfloop transitions, 26 changer transitions 0/417 dead transitions. [2024-06-27 18:43:12,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 417 transitions, 6578 flow [2024-06-27 18:43:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:43:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:43:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-27 18:43:12,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-27 18:43:12,519 INFO L175 Difference]: Start difference. First operand has 237 places, 395 transitions, 5622 flow. Second operand 6 states and 126 transitions. [2024-06-27 18:43:12,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 417 transitions, 6578 flow [2024-06-27 18:43:13,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 417 transitions, 6494 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:13,221 INFO L231 Difference]: Finished difference. Result has 240 places, 395 transitions, 5600 flow [2024-06-27 18:43:13,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5538, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5600, PETRI_PLACES=240, PETRI_TRANSITIONS=395} [2024-06-27 18:43:13,221 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-27 18:43:13,222 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 395 transitions, 5600 flow [2024-06-27 18:43:13,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:13,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:13,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:13,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:43:13,222 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2024605034, now seen corresponding path program 2 times [2024-06-27 18:43:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:13,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327761440] [2024-06-27 18:43:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:14,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:14,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327761440] [2024-06-27 18:43:14,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327761440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:14,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:14,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232838055] [2024-06-27 18:43:14,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:14,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:14,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:14,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:14,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 395 transitions, 5600 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:14,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:14,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:14,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:16,328 INFO L124 PetriNetUnfolderBase]: 6880/10621 cut-off events. [2024-06-27 18:43:16,328 INFO L125 PetriNetUnfolderBase]: For 366573/366592 co-relation queries the response was YES. [2024-06-27 18:43:16,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76751 conditions, 10621 events. 6880/10621 cut-off events. For 366573/366592 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 65003 event pairs, 1414 based on Foata normal form. 30/10398 useless extension candidates. Maximal degree in co-relation 76631. Up to 8197 conditions per place. [2024-06-27 18:43:16,460 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 304 selfloop transitions, 155 changer transitions 0/466 dead transitions. [2024-06-27 18:43:16,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 466 transitions, 7066 flow [2024-06-27 18:43:16,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:16,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 18:43:16,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-27 18:43:16,461 INFO L175 Difference]: Start difference. First operand has 240 places, 395 transitions, 5600 flow. Second operand 9 states and 219 transitions. [2024-06-27 18:43:16,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 466 transitions, 7066 flow [2024-06-27 18:43:17,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 466 transitions, 7014 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:17,129 INFO L231 Difference]: Finished difference. Result has 245 places, 399 transitions, 5987 flow [2024-06-27 18:43:17,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5987, PETRI_PLACES=245, PETRI_TRANSITIONS=399} [2024-06-27 18:43:17,130 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 193 predicate places. [2024-06-27 18:43:17,130 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 399 transitions, 5987 flow [2024-06-27 18:43:17,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:17,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:17,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:43:17,131 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:17,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:17,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1823247014, now seen corresponding path program 3 times [2024-06-27 18:43:17,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:17,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779093859] [2024-06-27 18:43:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:17,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:17,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779093859] [2024-06-27 18:43:17,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779093859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:17,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:17,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:17,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528073564] [2024-06-27 18:43:17,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:17,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:17,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:17,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:17,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:17,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:17,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 399 transitions, 5987 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:17,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:17,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:20,160 INFO L124 PetriNetUnfolderBase]: 7259/11120 cut-off events. [2024-06-27 18:43:20,161 INFO L125 PetriNetUnfolderBase]: For 435018/435075 co-relation queries the response was YES. [2024-06-27 18:43:20,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84637 conditions, 11120 events. 7259/11120 cut-off events. For 435018/435075 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 68456 event pairs, 1536 based on Foata normal form. 60/10960 useless extension candidates. Maximal degree in co-relation 84516. Up to 9067 conditions per place. [2024-06-27 18:43:20,291 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 400 selfloop transitions, 67 changer transitions 0/474 dead transitions. [2024-06-27 18:43:20,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 474 transitions, 7662 flow [2024-06-27 18:43:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:43:20,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 18:43:20,293 INFO L175 Difference]: Start difference. First operand has 245 places, 399 transitions, 5987 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:43:20,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 474 transitions, 7662 flow [2024-06-27 18:43:21,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 474 transitions, 7299 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:21,070 INFO L231 Difference]: Finished difference. Result has 248 places, 405 transitions, 6040 flow [2024-06-27 18:43:21,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5624, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6040, PETRI_PLACES=248, PETRI_TRANSITIONS=405} [2024-06-27 18:43:21,071 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 196 predicate places. [2024-06-27 18:43:21,071 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 405 transitions, 6040 flow [2024-06-27 18:43:21,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:21,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:21,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:21,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:43:21,071 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:21,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1830665624, now seen corresponding path program 4 times [2024-06-27 18:43:21,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:21,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301933041] [2024-06-27 18:43:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:21,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301933041] [2024-06-27 18:43:21,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301933041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:21,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:21,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:21,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679894891] [2024-06-27 18:43:21,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:21,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:21,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:21,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:22,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:22,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 405 transitions, 6040 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:22,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:22,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:24,497 INFO L124 PetriNetUnfolderBase]: 7491/11550 cut-off events. [2024-06-27 18:43:24,497 INFO L125 PetriNetUnfolderBase]: For 461915/461972 co-relation queries the response was YES. [2024-06-27 18:43:24,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87619 conditions, 11550 events. 7491/11550 cut-off events. For 461915/461972 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 72296 event pairs, 1707 based on Foata normal form. 64/11368 useless extension candidates. Maximal degree in co-relation 87496. Up to 10021 conditions per place. [2024-06-27 18:43:24,620 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 409 selfloop transitions, 65 changer transitions 0/481 dead transitions. [2024-06-27 18:43:24,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 481 transitions, 7493 flow [2024-06-27 18:43:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:43:24,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 18:43:24,622 INFO L175 Difference]: Start difference. First operand has 248 places, 405 transitions, 6040 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:43:24,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 481 transitions, 7493 flow [2024-06-27 18:43:25,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 481 transitions, 7322 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:25,377 INFO L231 Difference]: Finished difference. Result has 253 places, 409 transitions, 6176 flow [2024-06-27 18:43:25,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5883, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6176, PETRI_PLACES=253, PETRI_TRANSITIONS=409} [2024-06-27 18:43:25,377 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2024-06-27 18:43:25,377 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 409 transitions, 6176 flow [2024-06-27 18:43:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:25,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:43:25,379 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:25,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1823515784, now seen corresponding path program 5 times [2024-06-27 18:43:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398656745] [2024-06-27 18:43:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:25,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:26,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:26,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:26,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398656745] [2024-06-27 18:43:26,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398656745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:26,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067273533] [2024-06-27 18:43:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:26,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:26,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:26,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:26,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 409 transitions, 6176 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:26,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:26,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:26,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:28,914 INFO L124 PetriNetUnfolderBase]: 7455/11476 cut-off events. [2024-06-27 18:43:28,915 INFO L125 PetriNetUnfolderBase]: For 429642/429699 co-relation queries the response was YES. [2024-06-27 18:43:28,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85714 conditions, 11476 events. 7455/11476 cut-off events. For 429642/429699 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 71530 event pairs, 1667 based on Foata normal form. 64/11300 useless extension candidates. Maximal degree in co-relation 85589. Up to 9725 conditions per place. [2024-06-27 18:43:29,039 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 409 selfloop transitions, 65 changer transitions 0/481 dead transitions. [2024-06-27 18:43:29,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 481 transitions, 7471 flow [2024-06-27 18:43:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 18:43:29,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 18:43:29,041 INFO L175 Difference]: Start difference. First operand has 253 places, 409 transitions, 6176 flow. Second operand 10 states and 235 transitions. [2024-06-27 18:43:29,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 481 transitions, 7471 flow [2024-06-27 18:43:29,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 481 transitions, 7252 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:29,948 INFO L231 Difference]: Finished difference. Result has 255 places, 409 transitions, 6099 flow [2024-06-27 18:43:29,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5957, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6099, PETRI_PLACES=255, PETRI_TRANSITIONS=409} [2024-06-27 18:43:29,949 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 203 predicate places. [2024-06-27 18:43:29,949 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 409 transitions, 6099 flow [2024-06-27 18:43:29,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:29,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:29,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:29,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:43:29,950 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:29,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -216958132, now seen corresponding path program 1 times [2024-06-27 18:43:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:29,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257566024] [2024-06-27 18:43:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:29,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257566024] [2024-06-27 18:43:30,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257566024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:30,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:30,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913239726] [2024-06-27 18:43:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:30,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:30,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 409 transitions, 6099 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:30,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:30,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:32,902 INFO L124 PetriNetUnfolderBase]: 7488/11457 cut-off events. [2024-06-27 18:43:32,903 INFO L125 PetriNetUnfolderBase]: For 403055/403112 co-relation queries the response was YES. [2024-06-27 18:43:33,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84900 conditions, 11457 events. 7488/11457 cut-off events. For 403055/403112 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 70590 event pairs, 1937 based on Foata normal form. 46/11285 useless extension candidates. Maximal degree in co-relation 84774. Up to 10640 conditions per place. [2024-06-27 18:43:33,061 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 387 selfloop transitions, 43 changer transitions 0/437 dead transitions. [2024-06-27 18:43:33,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 437 transitions, 7159 flow [2024-06-27 18:43:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:43:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:43:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 18:43:33,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-06-27 18:43:33,062 INFO L175 Difference]: Start difference. First operand has 255 places, 409 transitions, 6099 flow. Second operand 6 states and 130 transitions. [2024-06-27 18:43:33,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 437 transitions, 7159 flow [2024-06-27 18:43:34,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 437 transitions, 7006 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:34,172 INFO L231 Difference]: Finished difference. Result has 252 places, 411 transitions, 6086 flow [2024-06-27 18:43:34,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5946, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6086, PETRI_PLACES=252, PETRI_TRANSITIONS=411} [2024-06-27 18:43:34,173 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-27 18:43:34,173 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 411 transitions, 6086 flow [2024-06-27 18:43:34,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:34,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:34,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:34,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:43:34,174 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:34,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1069153771, now seen corresponding path program 3 times [2024-06-27 18:43:34,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938650588] [2024-06-27 18:43:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:34,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:34,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:34,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938650588] [2024-06-27 18:43:34,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938650588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:34,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:34,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:34,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541895057] [2024-06-27 18:43:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:34,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:34,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:34,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:34,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 411 transitions, 6086 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:34,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:34,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:34,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:37,180 INFO L124 PetriNetUnfolderBase]: 7528/11685 cut-off events. [2024-06-27 18:43:37,180 INFO L125 PetriNetUnfolderBase]: For 410046/410103 co-relation queries the response was YES. [2024-06-27 18:43:37,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85400 conditions, 11685 events. 7528/11685 cut-off events. For 410046/410103 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 74078 event pairs, 1809 based on Foata normal form. 46/11455 useless extension candidates. Maximal degree in co-relation 85273. Up to 10730 conditions per place. [2024-06-27 18:43:37,320 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 412 selfloop transitions, 32 changer transitions 0/451 dead transitions. [2024-06-27 18:43:37,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 451 transitions, 7262 flow [2024-06-27 18:43:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:37,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-27 18:43:37,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2024-06-27 18:43:37,322 INFO L175 Difference]: Start difference. First operand has 252 places, 411 transitions, 6086 flow. Second operand 7 states and 152 transitions. [2024-06-27 18:43:37,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 451 transitions, 7262 flow [2024-06-27 18:43:38,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 451 transitions, 7158 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:38,100 INFO L231 Difference]: Finished difference. Result has 255 places, 414 transitions, 6125 flow [2024-06-27 18:43:38,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5982, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6125, PETRI_PLACES=255, PETRI_TRANSITIONS=414} [2024-06-27 18:43:38,100 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 203 predicate places. [2024-06-27 18:43:38,100 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 414 transitions, 6125 flow [2024-06-27 18:43:38,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:38,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:38,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:38,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:43:38,101 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:38,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1082486251, now seen corresponding path program 4 times [2024-06-27 18:43:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:38,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441857661] [2024-06-27 18:43:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:38,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:38,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:38,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:38,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441857661] [2024-06-27 18:43:38,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441857661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:38,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:38,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:38,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238913346] [2024-06-27 18:43:38,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:38,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:38,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:38,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:38,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 414 transitions, 6125 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:38,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:38,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:38,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:40,698 INFO L124 PetriNetUnfolderBase]: 7599/11792 cut-off events. [2024-06-27 18:43:40,698 INFO L125 PetriNetUnfolderBase]: For 426219/426276 co-relation queries the response was YES. [2024-06-27 18:43:40,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87244 conditions, 11792 events. 7599/11792 cut-off events. For 426219/426276 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 74838 event pairs, 1807 based on Foata normal form. 46/11559 useless extension candidates. Maximal degree in co-relation 87116. Up to 10630 conditions per place. [2024-06-27 18:43:40,857 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 399 selfloop transitions, 56 changer transitions 0/462 dead transitions. [2024-06-27 18:43:40,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 462 transitions, 7633 flow [2024-06-27 18:43:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:40,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 18:43:40,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813664596273292 [2024-06-27 18:43:40,858 INFO L175 Difference]: Start difference. First operand has 255 places, 414 transitions, 6125 flow. Second operand 7 states and 155 transitions. [2024-06-27 18:43:40,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 462 transitions, 7633 flow [2024-06-27 18:43:41,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 462 transitions, 7474 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:41,741 INFO L231 Difference]: Finished difference. Result has 257 places, 424 transitions, 6296 flow [2024-06-27 18:43:41,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6296, PETRI_PLACES=257, PETRI_TRANSITIONS=424} [2024-06-27 18:43:41,742 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 205 predicate places. [2024-06-27 18:43:41,742 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 424 transitions, 6296 flow [2024-06-27 18:43:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:41,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:41,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:41,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:43:41,743 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:41,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:41,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1293966187, now seen corresponding path program 5 times [2024-06-27 18:43:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282047169] [2024-06-27 18:43:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:41,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:42,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:42,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282047169] [2024-06-27 18:43:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282047169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:42,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:42,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:42,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752761936] [2024-06-27 18:43:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:42,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:42,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:42,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 424 transitions, 6296 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:42,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:42,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:42,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:44,543 INFO L124 PetriNetUnfolderBase]: 7639/11682 cut-off events. [2024-06-27 18:43:44,543 INFO L125 PetriNetUnfolderBase]: For 443884/443941 co-relation queries the response was YES. [2024-06-27 18:43:44,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89233 conditions, 11682 events. 7639/11682 cut-off events. For 443884/443941 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 72241 event pairs, 1968 based on Foata normal form. 46/11503 useless extension candidates. Maximal degree in co-relation 89104. Up to 10834 conditions per place. [2024-06-27 18:43:44,677 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 415 selfloop transitions, 35 changer transitions 0/457 dead transitions. [2024-06-27 18:43:44,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 457 transitions, 7604 flow [2024-06-27 18:43:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-27 18:43:44,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-06-27 18:43:44,678 INFO L175 Difference]: Start difference. First operand has 257 places, 424 transitions, 6296 flow. Second operand 7 states and 147 transitions. [2024-06-27 18:43:44,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 457 transitions, 7604 flow [2024-06-27 18:43:45,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 457 transitions, 7505 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:45,538 INFO L231 Difference]: Finished difference. Result has 261 places, 427 transitions, 6353 flow [2024-06-27 18:43:45,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6205, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6353, PETRI_PLACES=261, PETRI_TRANSITIONS=427} [2024-06-27 18:43:45,539 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 209 predicate places. [2024-06-27 18:43:45,539 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 427 transitions, 6353 flow [2024-06-27 18:43:45,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:45,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:45,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:45,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:43:45,540 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:45,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1866332399, now seen corresponding path program 6 times [2024-06-27 18:43:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123859064] [2024-06-27 18:43:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:45,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:45,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:45,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123859064] [2024-06-27 18:43:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123859064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:45,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:45,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078920497] [2024-06-27 18:43:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:45,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:45,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:45,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:45,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:46,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:46,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 427 transitions, 6353 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:46,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:46,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:46,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:48,240 INFO L124 PetriNetUnfolderBase]: 7633/11680 cut-off events. [2024-06-27 18:43:48,241 INFO L125 PetriNetUnfolderBase]: For 434219/434276 co-relation queries the response was YES. [2024-06-27 18:43:48,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88198 conditions, 11680 events. 7633/11680 cut-off events. For 434219/434276 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 72261 event pairs, 1989 based on Foata normal form. 46/11499 useless extension candidates. Maximal degree in co-relation 88067. Up to 10908 conditions per place. [2024-06-27 18:43:48,414 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 418 selfloop transitions, 27 changer transitions 0/452 dead transitions. [2024-06-27 18:43:48,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 452 transitions, 7395 flow [2024-06-27 18:43:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 18:43:48,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409937888198758 [2024-06-27 18:43:48,415 INFO L175 Difference]: Start difference. First operand has 261 places, 427 transitions, 6353 flow. Second operand 7 states and 142 transitions. [2024-06-27 18:43:48,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 452 transitions, 7395 flow [2024-06-27 18:43:49,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 452 transitions, 7229 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:49,315 INFO L231 Difference]: Finished difference. Result has 263 places, 427 transitions, 6247 flow [2024-06-27 18:43:49,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6187, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6247, PETRI_PLACES=263, PETRI_TRANSITIONS=427} [2024-06-27 18:43:49,315 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-27 18:43:49,315 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 427 transitions, 6247 flow [2024-06-27 18:43:49,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2024-06-27 18:43:49,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:49,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:43:49,316 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:49,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -219898002, now seen corresponding path program 2 times [2024-06-27 18:43:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:49,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896106787] [2024-06-27 18:43:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:49,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:49,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896106787] [2024-06-27 18:43:49,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896106787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:49,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:49,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:49,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010148967] [2024-06-27 18:43:49,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:49,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:49,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:49,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:49,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:49,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:49,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 427 transitions, 6247 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:49,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:49,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:49,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:52,242 INFO L124 PetriNetUnfolderBase]: 7666/11724 cut-off events. [2024-06-27 18:43:52,242 INFO L125 PetriNetUnfolderBase]: For 439630/439687 co-relation queries the response was YES. [2024-06-27 18:43:52,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88333 conditions, 11724 events. 7666/11724 cut-off events. For 439630/439687 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 72366 event pairs, 1967 based on Foata normal form. 46/11544 useless extension candidates. Maximal degree in co-relation 88202. Up to 10788 conditions per place. [2024-06-27 18:43:52,450 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 406 selfloop transitions, 52 changer transitions 0/465 dead transitions. [2024-06-27 18:43:52,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 465 transitions, 7603 flow [2024-06-27 18:43:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 18:43:52,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658385093167702 [2024-06-27 18:43:52,452 INFO L175 Difference]: Start difference. First operand has 263 places, 427 transitions, 6247 flow. Second operand 7 states and 150 transitions. [2024-06-27 18:43:52,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 465 transitions, 7603 flow [2024-06-27 18:43:53,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 465 transitions, 7478 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:53,447 INFO L231 Difference]: Finished difference. Result has 263 places, 431 transitions, 6327 flow [2024-06-27 18:43:53,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6122, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6327, PETRI_PLACES=263, PETRI_TRANSITIONS=431} [2024-06-27 18:43:53,447 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-27 18:43:53,447 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 431 transitions, 6327 flow [2024-06-27 18:43:53,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:53,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:53,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:53,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:43:53,448 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:53,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:53,448 INFO L85 PathProgramCache]: Analyzing trace with hash -205613202, now seen corresponding path program 3 times [2024-06-27 18:43:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:53,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615285368] [2024-06-27 18:43:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:53,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:54,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:54,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615285368] [2024-06-27 18:43:54,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615285368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:54,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:54,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:43:54,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873102569] [2024-06-27 18:43:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:54,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:43:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:43:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:43:54,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:54,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 431 transitions, 6327 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:54,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:54,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:54,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:56,444 INFO L124 PetriNetUnfolderBase]: 7661/11720 cut-off events. [2024-06-27 18:43:56,445 INFO L125 PetriNetUnfolderBase]: For 447809/447866 co-relation queries the response was YES. [2024-06-27 18:43:56,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88488 conditions, 11720 events. 7661/11720 cut-off events. For 447809/447866 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 72525 event pairs, 1978 based on Foata normal form. 46/11539 useless extension candidates. Maximal degree in co-relation 88357. Up to 10869 conditions per place. [2024-06-27 18:43:56,630 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 407 selfloop transitions, 49 changer transitions 0/463 dead transitions. [2024-06-27 18:43:56,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 463 transitions, 7439 flow [2024-06-27 18:43:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:43:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:43:56,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 18:43:56,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-27 18:43:56,631 INFO L175 Difference]: Start difference. First operand has 263 places, 431 transitions, 6327 flow. Second operand 7 states and 149 transitions. [2024-06-27 18:43:56,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 463 transitions, 7439 flow [2024-06-27 18:43:57,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 463 transitions, 7324 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:57,528 INFO L231 Difference]: Finished difference. Result has 267 places, 431 transitions, 6316 flow [2024-06-27 18:43:57,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6316, PETRI_PLACES=267, PETRI_TRANSITIONS=431} [2024-06-27 18:43:57,530 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 215 predicate places. [2024-06-27 18:43:57,530 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 431 transitions, 6316 flow [2024-06-27 18:43:57,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:57,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:57,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:57,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:43:57,530 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:43:57,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1077733579, now seen corresponding path program 1 times [2024-06-27 18:43:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370187884] [2024-06-27 18:43:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:58,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370187884] [2024-06-27 18:43:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370187884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:58,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:58,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001948071] [2024-06-27 18:43:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:58,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:58,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:58,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:43:58,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 431 transitions, 6316 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:58,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:43:58,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:00,752 INFO L124 PetriNetUnfolderBase]: 7821/12083 cut-off events. [2024-06-27 18:44:00,752 INFO L125 PetriNetUnfolderBase]: For 466847/466904 co-relation queries the response was YES. [2024-06-27 18:44:00,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90490 conditions, 12083 events. 7821/12083 cut-off events. For 466847/466904 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 76437 event pairs, 1839 based on Foata normal form. 52/11859 useless extension candidates. Maximal degree in co-relation 90357. Up to 10882 conditions per place. [2024-06-27 18:44:00,897 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 427 selfloop transitions, 47 changer transitions 0/481 dead transitions. [2024-06-27 18:44:00,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 481 transitions, 7621 flow [2024-06-27 18:44:00,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:00,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 18:44:00,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-27 18:44:00,906 INFO L175 Difference]: Start difference. First operand has 267 places, 431 transitions, 6316 flow. Second operand 8 states and 179 transitions. [2024-06-27 18:44:00,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 481 transitions, 7621 flow [2024-06-27 18:44:01,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 481 transitions, 7509 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:01,884 INFO L231 Difference]: Finished difference. Result has 269 places, 436 transitions, 6439 flow [2024-06-27 18:44:01,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6439, PETRI_PLACES=269, PETRI_TRANSITIONS=436} [2024-06-27 18:44:01,885 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 217 predicate places. [2024-06-27 18:44:01,885 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 436 transitions, 6439 flow [2024-06-27 18:44:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:01,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:01,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:01,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:44:01,886 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:01,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1077853549, now seen corresponding path program 2 times [2024-06-27 18:44:01,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:01,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225690238] [2024-06-27 18:44:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:01,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:02,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:02,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225690238] [2024-06-27 18:44:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225690238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:02,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:02,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191771759] [2024-06-27 18:44:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:02,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:02,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:02,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:02,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:02,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:02,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 436 transitions, 6439 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:02,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:02,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:02,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:05,033 INFO L124 PetriNetUnfolderBase]: 7963/12130 cut-off events. [2024-06-27 18:44:05,033 INFO L125 PetriNetUnfolderBase]: For 490544/490544 co-relation queries the response was YES. [2024-06-27 18:44:05,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93812 conditions, 12130 events. 7963/12130 cut-off events. For 490544/490544 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 74885 event pairs, 1941 based on Foata normal form. 4/11908 useless extension candidates. Maximal degree in co-relation 93678. Up to 11010 conditions per place. [2024-06-27 18:44:05,235 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 443 selfloop transitions, 48 changer transitions 0/498 dead transitions. [2024-06-27 18:44:05,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 498 transitions, 8217 flow [2024-06-27 18:44:05,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:05,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 18:44:05,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 18:44:05,237 INFO L175 Difference]: Start difference. First operand has 269 places, 436 transitions, 6439 flow. Second operand 8 states and 181 transitions. [2024-06-27 18:44:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 498 transitions, 8217 flow [2024-06-27 18:44:06,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 498 transitions, 7959 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:06,532 INFO L231 Difference]: Finished difference. Result has 273 places, 452 transitions, 6705 flow [2024-06-27 18:44:06,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6256, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6705, PETRI_PLACES=273, PETRI_TRANSITIONS=452} [2024-06-27 18:44:06,533 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 221 predicate places. [2024-06-27 18:44:06,533 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 452 transitions, 6705 flow [2024-06-27 18:44:06,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:06,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:06,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:44:06,534 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:06,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1082502123, now seen corresponding path program 1 times [2024-06-27 18:44:06,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:06,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80607580] [2024-06-27 18:44:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:06,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:07,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:07,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80607580] [2024-06-27 18:44:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80607580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:07,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:07,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:07,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939232382] [2024-06-27 18:44:07,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:07,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:07,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:07,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 452 transitions, 6705 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:07,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:07,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:09,785 INFO L124 PetriNetUnfolderBase]: 7996/12240 cut-off events. [2024-06-27 18:44:09,785 INFO L125 PetriNetUnfolderBase]: For 512434/512434 co-relation queries the response was YES. [2024-06-27 18:44:09,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95305 conditions, 12240 events. 7996/12240 cut-off events. For 512434/512434 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 76341 event pairs, 1973 based on Foata normal form. 2/11995 useless extension candidates. Maximal degree in co-relation 95168. Up to 11379 conditions per place. [2024-06-27 18:44:10,003 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 459 selfloop transitions, 22 changer transitions 0/488 dead transitions. [2024-06-27 18:44:10,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 488 transitions, 8044 flow [2024-06-27 18:44:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 18:44:10,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658385093167702 [2024-06-27 18:44:10,005 INFO L175 Difference]: Start difference. First operand has 273 places, 452 transitions, 6705 flow. Second operand 7 states and 150 transitions. [2024-06-27 18:44:10,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 488 transitions, 8044 flow [2024-06-27 18:44:11,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 488 transitions, 7925 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:11,263 INFO L231 Difference]: Finished difference. Result has 277 places, 454 transitions, 6685 flow [2024-06-27 18:44:11,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6586, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6685, PETRI_PLACES=277, PETRI_TRANSITIONS=454} [2024-06-27 18:44:11,264 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 225 predicate places. [2024-06-27 18:44:11,264 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 454 transitions, 6685 flow [2024-06-27 18:44:11,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:11,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:11,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:11,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:44:11,265 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:11,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:11,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1398552951, now seen corresponding path program 3 times [2024-06-27 18:44:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499778303] [2024-06-27 18:44:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:11,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:11,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499778303] [2024-06-27 18:44:11,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499778303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:11,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793796249] [2024-06-27 18:44:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:11,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:11,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:11,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 454 transitions, 6685 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:11,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:11,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:11,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:14,478 INFO L124 PetriNetUnfolderBase]: 8076/12348 cut-off events. [2024-06-27 18:44:14,478 INFO L125 PetriNetUnfolderBase]: For 525216/525216 co-relation queries the response was YES. [2024-06-27 18:44:14,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96352 conditions, 12348 events. 8076/12348 cut-off events. For 525216/525216 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 76852 event pairs, 1975 based on Foata normal form. 4/12105 useless extension candidates. Maximal degree in co-relation 96213. Up to 11420 conditions per place. [2024-06-27 18:44:14,760 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 463 selfloop transitions, 28 changer transitions 0/498 dead transitions. [2024-06-27 18:44:14,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 498 transitions, 8102 flow [2024-06-27 18:44:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 18:44:14,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673913043478261 [2024-06-27 18:44:14,762 INFO L175 Difference]: Start difference. First operand has 277 places, 454 transitions, 6685 flow. Second operand 8 states and 172 transitions. [2024-06-27 18:44:14,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 498 transitions, 8102 flow [2024-06-27 18:44:16,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 498 transitions, 8031 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:16,212 INFO L231 Difference]: Finished difference. Result has 280 places, 458 transitions, 6787 flow [2024-06-27 18:44:16,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6614, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6787, PETRI_PLACES=280, PETRI_TRANSITIONS=458} [2024-06-27 18:44:16,214 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-27 18:44:16,214 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 458 transitions, 6787 flow [2024-06-27 18:44:16,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:16,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:16,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:44:16,215 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:16,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1293950315, now seen corresponding path program 2 times [2024-06-27 18:44:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082204234] [2024-06-27 18:44:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:17,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:17,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082204234] [2024-06-27 18:44:17,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082204234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:17,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:17,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:17,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423403774] [2024-06-27 18:44:17,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:17,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:17,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:17,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:17,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:17,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 458 transitions, 6787 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:17,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:17,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:19,513 INFO L124 PetriNetUnfolderBase]: 8109/12361 cut-off events. [2024-06-27 18:44:19,514 INFO L125 PetriNetUnfolderBase]: For 532489/532489 co-relation queries the response was YES. [2024-06-27 18:44:19,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96987 conditions, 12361 events. 8109/12361 cut-off events. For 532489/532489 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 76722 event pairs, 2096 based on Foata normal form. 2/12127 useless extension candidates. Maximal degree in co-relation 96847. Up to 11576 conditions per place. [2024-06-27 18:44:19,701 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 464 selfloop transitions, 15 changer transitions 0/486 dead transitions. [2024-06-27 18:44:19,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 486 transitions, 8017 flow [2024-06-27 18:44:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-27 18:44:19,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409937888198758 [2024-06-27 18:44:19,702 INFO L175 Difference]: Start difference. First operand has 280 places, 458 transitions, 6787 flow. Second operand 7 states and 142 transitions. [2024-06-27 18:44:19,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 486 transitions, 8017 flow [2024-06-27 18:44:21,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 486 transitions, 7900 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:21,022 INFO L231 Difference]: Finished difference. Result has 281 places, 460 transitions, 6759 flow [2024-06-27 18:44:21,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6670, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6759, PETRI_PLACES=281, PETRI_TRANSITIONS=460} [2024-06-27 18:44:21,022 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 229 predicate places. [2024-06-27 18:44:21,022 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 460 transitions, 6759 flow [2024-06-27 18:44:21,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:21,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:21,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:44:21,023 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:21,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:21,023 INFO L85 PathProgramCache]: Analyzing trace with hash -205102229, now seen corresponding path program 3 times [2024-06-27 18:44:21,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:21,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706174426] [2024-06-27 18:44:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:21,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:21,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:21,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706174426] [2024-06-27 18:44:21,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706174426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:21,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016363619] [2024-06-27 18:44:21,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:21,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:21,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:21,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 460 transitions, 6759 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:21,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:21,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:24,268 INFO L124 PetriNetUnfolderBase]: 8142/12411 cut-off events. [2024-06-27 18:44:24,269 INFO L125 PetriNetUnfolderBase]: For 545628/545628 co-relation queries the response was YES. [2024-06-27 18:44:24,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97628 conditions, 12411 events. 8142/12411 cut-off events. For 545628/545628 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 76863 event pairs, 2094 based on Foata normal form. 2/12176 useless extension candidates. Maximal degree in co-relation 97487. Up to 11624 conditions per place. [2024-06-27 18:44:24,456 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 467 selfloop transitions, 18 changer transitions 0/492 dead transitions. [2024-06-27 18:44:24,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 492 transitions, 8015 flow [2024-06-27 18:44:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-27 18:44:24,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-06-27 18:44:24,457 INFO L175 Difference]: Start difference. First operand has 281 places, 460 transitions, 6759 flow. Second operand 7 states and 140 transitions. [2024-06-27 18:44:24,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 492 transitions, 8015 flow [2024-06-27 18:44:25,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 492 transitions, 7954 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:25,804 INFO L231 Difference]: Finished difference. Result has 285 places, 469 transitions, 6919 flow [2024-06-27 18:44:25,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6698, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6919, PETRI_PLACES=285, PETRI_TRANSITIONS=469} [2024-06-27 18:44:25,804 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 233 predicate places. [2024-06-27 18:44:25,805 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 469 transitions, 6919 flow [2024-06-27 18:44:25,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:25,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:25,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:44:25,805 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:25,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -214602613, now seen corresponding path program 4 times [2024-06-27 18:44:25,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:25,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932995777] [2024-06-27 18:44:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:26,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932995777] [2024-06-27 18:44:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932995777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:26,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:26,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:26,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611423297] [2024-06-27 18:44:26,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:26,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:26,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:26,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:26,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 469 transitions, 6919 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:26,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:26,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:26,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:29,138 INFO L124 PetriNetUnfolderBase]: 8136/12391 cut-off events. [2024-06-27 18:44:29,139 INFO L125 PetriNetUnfolderBase]: For 560299/560299 co-relation queries the response was YES. [2024-06-27 18:44:29,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98584 conditions, 12391 events. 8136/12391 cut-off events. For 560299/560299 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 76673 event pairs, 2067 based on Foata normal form. 2/12160 useless extension candidates. Maximal degree in co-relation 98440. Up to 11579 conditions per place. [2024-06-27 18:44:29,300 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 476 selfloop transitions, 21 changer transitions 0/504 dead transitions. [2024-06-27 18:44:29,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 504 transitions, 8242 flow [2024-06-27 18:44:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:44:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:44:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-27 18:44:29,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429347826086957 [2024-06-27 18:44:29,301 INFO L175 Difference]: Start difference. First operand has 285 places, 469 transitions, 6919 flow. Second operand 8 states and 163 transitions. [2024-06-27 18:44:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 504 transitions, 8242 flow [2024-06-27 18:44:30,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 504 transitions, 8159 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:30,551 INFO L231 Difference]: Finished difference. Result has 290 places, 473 transitions, 7010 flow [2024-06-27 18:44:30,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6836, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7010, PETRI_PLACES=290, PETRI_TRANSITIONS=473} [2024-06-27 18:44:30,551 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 238 predicate places. [2024-06-27 18:44:30,552 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 473 transitions, 7010 flow [2024-06-27 18:44:30,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:30,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:30,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:44:30,552 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:30,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -205427977, now seen corresponding path program 1 times [2024-06-27 18:44:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239863185] [2024-06-27 18:44:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:31,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:31,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239863185] [2024-06-27 18:44:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239863185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:31,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:31,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087809774] [2024-06-27 18:44:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:31,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:31,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:31,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:31,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 473 transitions, 7010 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:31,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:31,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:31,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:34,479 INFO L124 PetriNetUnfolderBase]: 8149/12421 cut-off events. [2024-06-27 18:44:34,479 INFO L125 PetriNetUnfolderBase]: For 567136/567136 co-relation queries the response was YES. [2024-06-27 18:44:34,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99017 conditions, 12421 events. 8149/12421 cut-off events. For 567136/567136 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 77033 event pairs, 2075 based on Foata normal form. 1/12185 useless extension candidates. Maximal degree in co-relation 98872. Up to 11566 conditions per place. [2024-06-27 18:44:34,744 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 463 selfloop transitions, 36 changer transitions 0/506 dead transitions. [2024-06-27 18:44:34,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 506 transitions, 8318 flow [2024-06-27 18:44:34,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:34,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-27 18:44:34,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45962732919254656 [2024-06-27 18:44:34,746 INFO L175 Difference]: Start difference. First operand has 290 places, 473 transitions, 7010 flow. Second operand 7 states and 148 transitions. [2024-06-27 18:44:34,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 506 transitions, 8318 flow [2024-06-27 18:44:36,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 506 transitions, 8181 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:36,098 INFO L231 Difference]: Finished difference. Result has 291 places, 477 transitions, 7083 flow [2024-06-27 18:44:36,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6873, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7083, PETRI_PLACES=291, PETRI_TRANSITIONS=477} [2024-06-27 18:44:36,099 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 239 predicate places. [2024-06-27 18:44:36,099 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 477 transitions, 7083 flow [2024-06-27 18:44:36,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:36,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:36,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:36,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:44:36,099 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:36,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:36,100 INFO L85 PathProgramCache]: Analyzing trace with hash -205427729, now seen corresponding path program 4 times [2024-06-27 18:44:36,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:36,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921951724] [2024-06-27 18:44:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:36,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:36,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921951724] [2024-06-27 18:44:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921951724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:36,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:36,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:44:36,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595101232] [2024-06-27 18:44:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:44:36,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:44:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:44:36,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:36,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 477 transitions, 7083 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:36,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:36,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:36,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:39,810 INFO L124 PetriNetUnfolderBase]: 8165/12417 cut-off events. [2024-06-27 18:44:39,825 INFO L125 PetriNetUnfolderBase]: For 585416/585416 co-relation queries the response was YES. [2024-06-27 18:44:39,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100177 conditions, 12417 events. 8165/12417 cut-off events. For 585416/585416 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 76728 event pairs, 2086 based on Foata normal form. 2/12191 useless extension candidates. Maximal degree in co-relation 100031. Up to 11613 conditions per place. [2024-06-27 18:44:39,974 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 478 selfloop transitions, 23 changer transitions 0/508 dead transitions. [2024-06-27 18:44:39,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 508 transitions, 8420 flow [2024-06-27 18:44:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:44:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:44:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 18:44:39,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440993788819876 [2024-06-27 18:44:39,976 INFO L175 Difference]: Start difference. First operand has 291 places, 477 transitions, 7083 flow. Second operand 7 states and 143 transitions. [2024-06-27 18:44:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 508 transitions, 8420 flow [2024-06-27 18:44:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 508 transitions, 8257 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:41,303 INFO L231 Difference]: Finished difference. Result has 294 places, 482 transitions, 7093 flow [2024-06-27 18:44:41,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6925, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7093, PETRI_PLACES=294, PETRI_TRANSITIONS=482} [2024-06-27 18:44:41,304 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 242 predicate places. [2024-06-27 18:44:41,304 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 482 transitions, 7093 flow [2024-06-27 18:44:41,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:41,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:41,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:41,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:44:41,304 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:41,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:41,305 INFO L85 PathProgramCache]: Analyzing trace with hash -541027983, now seen corresponding path program 1 times [2024-06-27 18:44:41,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:41,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368349825] [2024-06-27 18:44:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:41,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:42,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368349825] [2024-06-27 18:44:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368349825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000699124] [2024-06-27 18:44:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:42,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:42,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:43,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:43,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 482 transitions, 7093 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:43,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:43,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:43,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:46,226 INFO L124 PetriNetUnfolderBase]: 8313/12803 cut-off events. [2024-06-27 18:44:46,227 INFO L125 PetriNetUnfolderBase]: For 635237/635294 co-relation queries the response was YES. [2024-06-27 18:44:46,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103534 conditions, 12803 events. 8313/12803 cut-off events. For 635237/635294 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 80394 event pairs, 1624 based on Foata normal form. 56/12577 useless extension candidates. Maximal degree in co-relation 103386. Up to 11378 conditions per place. [2024-06-27 18:44:46,528 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 470 selfloop transitions, 88 changer transitions 0/565 dead transitions. [2024-06-27 18:44:46,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 565 transitions, 9069 flow [2024-06-27 18:44:46,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:46,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-27 18:44:46,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934782608695652 [2024-06-27 18:44:46,530 INFO L175 Difference]: Start difference. First operand has 294 places, 482 transitions, 7093 flow. Second operand 10 states and 227 transitions. [2024-06-27 18:44:46,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 565 transitions, 9069 flow [2024-06-27 18:44:47,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 565 transitions, 8991 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:44:47,807 INFO L231 Difference]: Finished difference. Result has 304 places, 496 transitions, 7831 flow [2024-06-27 18:44:47,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7017, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7831, PETRI_PLACES=304, PETRI_TRANSITIONS=496} [2024-06-27 18:44:47,808 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 252 predicate places. [2024-06-27 18:44:47,808 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 496 transitions, 7831 flow [2024-06-27 18:44:47,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:47,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:47,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:47,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:44:47,808 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:47,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:47,809 INFO L85 PathProgramCache]: Analyzing trace with hash 648098651, now seen corresponding path program 2 times [2024-06-27 18:44:47,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:47,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301387369] [2024-06-27 18:44:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:47,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301387369] [2024-06-27 18:44:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301387369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:49,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179666811] [2024-06-27 18:44:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:49,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:49,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:49,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 496 transitions, 7831 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:49,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:49,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:49,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:53,239 INFO L124 PetriNetUnfolderBase]: 8855/13601 cut-off events. [2024-06-27 18:44:53,239 INFO L125 PetriNetUnfolderBase]: For 676386/676401 co-relation queries the response was YES. [2024-06-27 18:44:53,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112321 conditions, 13601 events. 8855/13601 cut-off events. For 676386/676401 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 85821 event pairs, 2053 based on Foata normal form. 22/13334 useless extension candidates. Maximal degree in co-relation 112168. Up to 12034 conditions per place. [2024-06-27 18:44:53,620 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 525 selfloop transitions, 138 changer transitions 0/670 dead transitions. [2024-06-27 18:44:53,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 670 transitions, 11635 flow [2024-06-27 18:44:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:53,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 265 transitions. [2024-06-27 18:44:53,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48007246376811596 [2024-06-27 18:44:53,623 INFO L175 Difference]: Start difference. First operand has 304 places, 496 transitions, 7831 flow. Second operand 12 states and 265 transitions. [2024-06-27 18:44:53,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 670 transitions, 11635 flow [2024-06-27 18:44:55,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 670 transitions, 11025 flow, removed 252 selfloop flow, removed 3 redundant places. [2024-06-27 18:44:55,527 INFO L231 Difference]: Finished difference. Result has 320 places, 577 transitions, 9671 flow [2024-06-27 18:44:55,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7265, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9671, PETRI_PLACES=320, PETRI_TRANSITIONS=577} [2024-06-27 18:44:55,527 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 268 predicate places. [2024-06-27 18:44:55,527 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 577 transitions, 9671 flow [2024-06-27 18:44:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:55,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:55,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:55,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:44:55,528 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:44:55,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash 531609819, now seen corresponding path program 3 times [2024-06-27 18:44:55,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:55,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406852075] [2024-06-27 18:44:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:55,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:56,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406852075] [2024-06-27 18:44:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406852075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:56,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:56,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:44:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165121319] [2024-06-27 18:44:56,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:56,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:44:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:44:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:44:57,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:44:57,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 577 transitions, 9671 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:57,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:44:57,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:01,322 INFO L124 PetriNetUnfolderBase]: 9565/14815 cut-off events. [2024-06-27 18:45:01,322 INFO L125 PetriNetUnfolderBase]: For 728456/728472 co-relation queries the response was YES. [2024-06-27 18:45:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122859 conditions, 14815 events. 9565/14815 cut-off events. For 728456/728472 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 96111 event pairs, 2652 based on Foata normal form. 28/14504 useless extension candidates. Maximal degree in co-relation 122697. Up to 12735 conditions per place. [2024-06-27 18:45:01,554 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 546 selfloop transitions, 207 changer transitions 0/760 dead transitions. [2024-06-27 18:45:01,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 760 transitions, 14020 flow [2024-06-27 18:45:01,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 255 transitions. [2024-06-27 18:45:01,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5039525691699605 [2024-06-27 18:45:01,556 INFO L175 Difference]: Start difference. First operand has 320 places, 577 transitions, 9671 flow. Second operand 11 states and 255 transitions. [2024-06-27 18:45:01,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 760 transitions, 14020 flow [2024-06-27 18:45:03,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 760 transitions, 13790 flow, removed 114 selfloop flow, removed 1 redundant places. [2024-06-27 18:45:03,759 INFO L231 Difference]: Finished difference. Result has 334 places, 673 transitions, 12583 flow [2024-06-27 18:45:03,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9553, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12583, PETRI_PLACES=334, PETRI_TRANSITIONS=673} [2024-06-27 18:45:03,760 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 282 predicate places. [2024-06-27 18:45:03,760 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 673 transitions, 12583 flow [2024-06-27 18:45:03,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:03,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:03,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:03,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:45:03,761 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:45:03,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash 142580601, now seen corresponding path program 4 times [2024-06-27 18:45:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:03,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476118242] [2024-06-27 18:45:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:03,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476118242] [2024-06-27 18:45:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476118242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:04,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:04,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:45:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392013501] [2024-06-27 18:45:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:45:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:45:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:45:05,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 18:45:05,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 673 transitions, 12583 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:05,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:05,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 18:45:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:09,436 INFO L124 PetriNetUnfolderBase]: 10017/15447 cut-off events. [2024-06-27 18:45:09,437 INFO L125 PetriNetUnfolderBase]: For 754886/754896 co-relation queries the response was YES. [2024-06-27 18:45:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129017 conditions, 15447 events. 10017/15447 cut-off events. For 754886/754896 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 100131 event pairs, 2833 based on Foata normal form. 22/15148 useless extension candidates. Maximal degree in co-relation 128848. Up to 13483 conditions per place. [2024-06-27 18:45:09,687 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 582 selfloop transitions, 196 changer transitions 0/785 dead transitions. [2024-06-27 18:45:09,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 785 transitions, 15009 flow [2024-06-27 18:45:09,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:45:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:45:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-06-27 18:45:09,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-27 18:45:09,690 INFO L175 Difference]: Start difference. First operand has 334 places, 673 transitions, 12583 flow. Second operand 12 states and 278 transitions. [2024-06-27 18:45:09,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 785 transitions, 15009 flow [2024-06-27 18:45:11,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 785 transitions, 14747 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 18:45:11,975 INFO L231 Difference]: Finished difference. Result has 344 places, 700 transitions, 13251 flow [2024-06-27 18:45:11,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12321, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13251, PETRI_PLACES=344, PETRI_TRANSITIONS=700} [2024-06-27 18:45:11,976 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 292 predicate places. [2024-06-27 18:45:11,976 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 700 transitions, 13251 flow [2024-06-27 18:45:11,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:11,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:11,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:11,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:45:11,977 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:45:11,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash 149633669, now seen corresponding path program 5 times [2024-06-27 18:45:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200673620] [2024-06-27 18:45:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat