./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix016_power.opt_rmo.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/mix016_power.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix016_power.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:02:36,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:02:36,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:02:36,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:02:36,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:02:36,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:02:36,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:02:36,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:02:36,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:02:36,451 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:02:36,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:02:36,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:02:36,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:02:36,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:02:36,454 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:02:36,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:02:36,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:02:36,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:02:36,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:02:36,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:02:36,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:02:36,455 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:02:36,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:02:36,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:02:36,456 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:02:36,456 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:02:36,456 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:02:36,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:02:36,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:02:36,457 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:02:36,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:02:36,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:02:36,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:02:36,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:02:36,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:02:36,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:02:36,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:02:36,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:02:36,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:02:36,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:02:36,460 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:02:36,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:02:36,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:02:36,461 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:02:36,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:02:36,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:02:36,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:02:36,735 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:02:36,735 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:02:36,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i [2024-06-27 20:02:37,831 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:02:38,047 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:02:38,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_power.opt_rmo.opt.i [2024-06-27 20:02:38,070 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5313fddc3/a6af1310bb81459b9a7e590e0498ea72/FLAGced0fad42 [2024-06-27 20:02:38,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5313fddc3/a6af1310bb81459b9a7e590e0498ea72 [2024-06-27 20:02:38,084 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:02:38,085 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:02:38,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix016_power.opt_rmo.opt.yml/witness.yml [2024-06-27 20:02:38,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:02:38,245 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:02:38,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:02:38,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:02:38,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:02:38,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:02:38" (1/2) ... [2024-06-27 20:02:38,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c53d8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:02:38, skipping insertion in model container [2024-06-27 20:02:38,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:02:38" (1/2) ... [2024-06-27 20:02:38,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ec11375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:02:38, skipping insertion in model container [2024-06-27 20:02:38,293 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:02:38" (2/2) ... [2024-06-27 20:02:38,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c53d8b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:02:38, skipping insertion in model container [2024-06-27 20:02:38,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:02:38" (2/2) ... [2024-06-27 20:02:38,293 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:02:38,369 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:02:38,371 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-27 20:02:38,371 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-27 20:02:38,371 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0) [2024-06-27 20:02:38,371 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:02:38,371 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-27 20:02:38,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:02:38,731 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:02:38,739 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:02:38,843 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:02:38,871 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:02:38,871 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:02:38 WrapperNode [2024-06-27 20:02:38,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:02:38,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:02:38,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:02:38,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:02:38,878 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,889 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,912 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 127 [2024-06-27 20:02:38,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:02:38,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:02:38,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:02:38,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:02:38,923 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,923 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,929 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,942 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 20:02:38,942 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,943 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,951 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,953 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,954 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,955 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:02:38,958 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:02:38,959 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:02:38,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:02:38,959 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 08:02:38" (1/1) ... [2024-06-27 20:02:38,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:02:38,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:02:38,981 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 20:02:38,988 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 20:02:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:02:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:02:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:02:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:02:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:02:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:02:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:02:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:02:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:02:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:02:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:02:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:02:39,033 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 20:02:39,163 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:02:39,165 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:02:39,419 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:02:39,420 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:02:39,607 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:02:39,607 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:02:39,608 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:02:39 BoogieIcfgContainer [2024-06-27 20:02:39,608 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:02:39,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:02:39,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:02:39,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:02:39,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:02:38" (1/4) ... [2024-06-27 20:02:39,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b538d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:02:39, skipping insertion in model container [2024-06-27 20:02:39,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:02:38" (2/4) ... [2024-06-27 20:02:39,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b538d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:02:39, skipping insertion in model container [2024-06-27 20:02:39,615 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 08:02:38" (3/4) ... [2024-06-27 20:02:39,615 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2b538d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:02:39, skipping insertion in model container [2024-06-27 20:02:39,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:02:39" (4/4) ... [2024-06-27 20:02:39,616 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_power.opt_rmo.opt.i [2024-06-27 20:02:39,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:02:39,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 20:02:39,630 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:02:39,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:02:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-27 20:02:39,729 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-27 20:02:39,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:02:39,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:02:39,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-27 20:02:39,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-27 20:02:39,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:02:39,753 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;@741d785, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:02:39,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 20:02:39,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:02:39,760 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:02:39,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:02:39,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:39,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:02:39,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash 365436942, now seen corresponding path program 1 times [2024-06-27 20:02:39,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:39,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435268830] [2024-06-27 20:02:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:39,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:40,544 INFO 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 20:02:40,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:40,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435268830] [2024-06-27 20:02:40,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435268830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:40,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:40,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:02:40,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626437656] [2024-06-27 20:02:40,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:40,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:02:40,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:02:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:02:40,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-27 20:02:40,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 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 20:02:40,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:40,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-27 20:02:40,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:40,904 INFO L124 PetriNetUnfolderBase]: 946/1551 cut-off events. [2024-06-27 20:02:40,904 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 20:02:40,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3057 conditions, 1551 events. 946/1551 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7745 event pairs, 638 based on Foata normal form. 1/1490 useless extension candidates. Maximal degree in co-relation 3045. Up to 1431 conditions per place. [2024-06-27 20:02:40,916 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 30 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-27 20:02:40,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 167 flow [2024-06-27 20:02:40,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:02:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:02:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 20:02:40,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6422764227642277 [2024-06-27 20:02:40,926 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 79 transitions. [2024-06-27 20:02:40,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 167 flow [2024-06-27 20:02:40,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 20:02:40,930 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-27 20:02:40,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-27 20:02:40,934 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-27 20:02:40,934 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-27 20:02:40,934 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 20:02:40,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:40,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:40,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:02:40,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:40,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1002400659, now seen corresponding path program 1 times [2024-06-27 20:02:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:40,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086482823] [2024-06-27 20:02:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:41,343 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 20:02:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086482823] [2024-06-27 20:02:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086482823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:41,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:41,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:02:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856525343] [2024-06-27 20:02:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:41,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:02:41,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:02:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:02:41,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 20:02:41,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:41,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:41,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 20:02:41,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:41,620 INFO L124 PetriNetUnfolderBase]: 1104/1745 cut-off events. [2024-06-27 20:02:41,620 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-06-27 20:02:41,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 1745 events. 1104/1745 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8495 event pairs, 517 based on Foata normal form. 6/1748 useless extension candidates. Maximal degree in co-relation 3939. Up to 1628 conditions per place. [2024-06-27 20:02:41,630 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 39 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-27 20:02:41,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 240 flow [2024-06-27 20:02:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:02:41,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:02:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-27 20:02:41,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158536585365854 [2024-06-27 20:02:41,634 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 101 transitions. [2024-06-27 20:02:41,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 240 flow [2024-06-27 20:02:41,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:02:41,637 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 136 flow [2024-06-27 20:02:41,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-27 20:02:41,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-27 20:02:41,638 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 136 flow [2024-06-27 20:02:41,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:41,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:41,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:41,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:02:41,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:41,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:41,641 INFO L85 PathProgramCache]: Analyzing trace with hash 390145838, now seen corresponding path program 1 times [2024-06-27 20:02:41,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41176752] [2024-06-27 20:02:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:42,636 INFO 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 20:02:42,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41176752] [2024-06-27 20:02:42,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41176752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:42,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:42,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:02:42,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385895346] [2024-06-27 20:02:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:02:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:02:42,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:02:42,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-27 20:02:42,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:42,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:42,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-27 20:02:42,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:43,086 INFO L124 PetriNetUnfolderBase]: 1095/1728 cut-off events. [2024-06-27 20:02:43,087 INFO L125 PetriNetUnfolderBase]: For 953/953 co-relation queries the response was YES. [2024-06-27 20:02:43,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4370 conditions, 1728 events. 1095/1728 cut-off events. For 953/953 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8356 event pairs, 375 based on Foata normal form. 6/1731 useless extension candidates. Maximal degree in co-relation 4356. Up to 1583 conditions per place. [2024-06-27 20:02:43,097 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 49 selfloop transitions, 12 changer transitions 0/68 dead transitions. [2024-06-27 20:02:43,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 346 flow [2024-06-27 20:02:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:02:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:02:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 20:02:43,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772357723577236 [2024-06-27 20:02:43,102 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 136 flow. Second operand 6 states and 142 transitions. [2024-06-27 20:02:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 346 flow [2024-06-27 20:02:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 326 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 20:02:43,105 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 179 flow [2024-06-27 20:02:43,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 20:02:43,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-27 20:02:43,107 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 179 flow [2024-06-27 20:02:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:43,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:43,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:02:43,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:43,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 292940758, now seen corresponding path program 1 times [2024-06-27 20:02:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:43,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988500336] [2024-06-27 20:02:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988500336] [2024-06-27 20:02:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988500336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:02:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589546138] [2024-06-27 20:02:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:43,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:02:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:02:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:02:43,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-27 20:02:43,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 179 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 20:02:43,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:43,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-27 20:02:43,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:43,914 INFO L124 PetriNetUnfolderBase]: 920/1574 cut-off events. [2024-06-27 20:02:43,914 INFO L125 PetriNetUnfolderBase]: For 1518/1518 co-relation queries the response was YES. [2024-06-27 20:02:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4239 conditions, 1574 events. 920/1574 cut-off events. For 1518/1518 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8095 event pairs, 378 based on Foata normal form. 2/1567 useless extension candidates. Maximal degree in co-relation 4222. Up to 1382 conditions per place. [2024-06-27 20:02:43,922 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 41 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-06-27 20:02:43,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 319 flow [2024-06-27 20:02:43,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:02:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:02:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-06-27 20:02:43,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024390243902439 [2024-06-27 20:02:43,924 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 179 flow. Second operand 5 states and 103 transitions. [2024-06-27 20:02:43,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 319 flow [2024-06-27 20:02:43,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 292 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:02:43,926 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 196 flow [2024-06-27 20:02:43,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 20:02:43,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-06-27 20:02:43,927 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 196 flow [2024-06-27 20:02:43,928 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 20:02:43,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:43,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:43,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:02:43,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:43,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1957448587, now seen corresponding path program 1 times [2024-06-27 20:02:43,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:43,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407943397] [2024-06-27 20:02:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407943397] [2024-06-27 20:02:44,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407943397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:44,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:44,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:02:44,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100052418] [2024-06-27 20:02:44,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:44,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:02:44,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:44,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:02:44,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:02:44,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:02:44,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:44,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:44,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:02:44,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:44,879 INFO L124 PetriNetUnfolderBase]: 1112/1777 cut-off events. [2024-06-27 20:02:44,879 INFO L125 PetriNetUnfolderBase]: For 2711/2711 co-relation queries the response was YES. [2024-06-27 20:02:44,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 1777 events. 1112/1777 cut-off events. For 2711/2711 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8692 event pairs, 448 based on Foata normal form. 4/1778 useless extension candidates. Maximal degree in co-relation 5294. Up to 1635 conditions per place. [2024-06-27 20:02:44,889 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 50 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2024-06-27 20:02:44,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 386 flow [2024-06-27 20:02:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:02:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:02:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 20:02:44,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-27 20:02:44,890 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 196 flow. Second operand 6 states and 121 transitions. [2024-06-27 20:02:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 386 flow [2024-06-27 20:02:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 366 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:02:44,893 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 230 flow [2024-06-27 20:02:44,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-27 20:02:44,894 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-27 20:02:44,894 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 230 flow [2024-06-27 20:02:44,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:44,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:44,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:44,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:02:44,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:44,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1951734667, now seen corresponding path program 2 times [2024-06-27 20:02:44,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418766408] [2024-06-27 20:02:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:45,476 INFO 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 20:02:45,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418766408] [2024-06-27 20:02:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418766408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:45,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:45,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:02:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904072753] [2024-06-27 20:02:45,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:45,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:02:45,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:45,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:02:45,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:02:45,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:02:45,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:45,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:45,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:02:45,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:45,846 INFO L124 PetriNetUnfolderBase]: 1118/1802 cut-off events. [2024-06-27 20:02:45,846 INFO L125 PetriNetUnfolderBase]: For 3962/3968 co-relation queries the response was YES. [2024-06-27 20:02:45,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5820 conditions, 1802 events. 1118/1802 cut-off events. For 3962/3968 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8972 event pairs, 449 based on Foata normal form. 8/1805 useless extension candidates. Maximal degree in co-relation 5800. Up to 1617 conditions per place. [2024-06-27 20:02:45,856 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 46 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-27 20:02:45,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 424 flow [2024-06-27 20:02:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:02:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:02:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 20:02:45,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-06-27 20:02:45,858 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 230 flow. Second operand 6 states and 121 transitions. [2024-06-27 20:02:45,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 424 flow [2024-06-27 20:02:45,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 68 transitions, 394 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:02:45,861 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 270 flow [2024-06-27 20:02:45,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 20:02:45,862 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-27 20:02:45,862 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 270 flow [2024-06-27 20:02:45,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:45,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:45,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:45,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:02:45,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:45,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:45,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1951726731, now seen corresponding path program 1 times [2024-06-27 20:02:45,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:45,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703300410] [2024-06-27 20:02:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:46,645 INFO 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 20:02:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:46,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703300410] [2024-06-27 20:02:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703300410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:02:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341408412] [2024-06-27 20:02:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:02:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:02:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:02:46,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:02:46,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 270 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 20:02:46,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:46,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:02:46,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:47,114 INFO L124 PetriNetUnfolderBase]: 1172/1960 cut-off events. [2024-06-27 20:02:47,115 INFO L125 PetriNetUnfolderBase]: For 5273/5273 co-relation queries the response was YES. [2024-06-27 20:02:47,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 1960 events. 1172/1960 cut-off events. For 5273/5273 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10141 event pairs, 444 based on Foata normal form. 2/1949 useless extension candidates. Maximal degree in co-relation 6528. Up to 1733 conditions per place. [2024-06-27 20:02:47,125 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 56 selfloop transitions, 14 changer transitions 0/76 dead transitions. [2024-06-27 20:02:47,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 495 flow [2024-06-27 20:02:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:02:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:02:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 20:02:47,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-27 20:02:47,127 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 270 flow. Second operand 7 states and 135 transitions. [2024-06-27 20:02:47,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 495 flow [2024-06-27 20:02:47,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 446 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:02:47,132 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 306 flow [2024-06-27 20:02:47,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-27 20:02:47,132 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-06-27 20:02:47,133 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 306 flow [2024-06-27 20:02:47,133 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 20:02:47,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:47,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:02:47,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:47,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash -392516947, now seen corresponding path program 1 times [2024-06-27 20:02:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:47,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390788980] [2024-06-27 20:02:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:47,927 INFO 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 20:02:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:47,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390788980] [2024-06-27 20:02:47,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390788980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:47,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:02:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319000192] [2024-06-27 20:02:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:47,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:02:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:02:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:02:48,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:02:48,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 306 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 20:02:48,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:48,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:02:48,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:48,427 INFO L124 PetriNetUnfolderBase]: 1272/2034 cut-off events. [2024-06-27 20:02:48,427 INFO L125 PetriNetUnfolderBase]: For 7532/7532 co-relation queries the response was YES. [2024-06-27 20:02:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7512 conditions, 2034 events. 1272/2034 cut-off events. For 7532/7532 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10250 event pairs, 478 based on Foata normal form. 2/2033 useless extension candidates. Maximal degree in co-relation 7489. Up to 1861 conditions per place. [2024-06-27 20:02:48,437 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 64 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-27 20:02:48,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 558 flow [2024-06-27 20:02:48,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:02:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:02:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-27 20:02:48,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912891986062718 [2024-06-27 20:02:48,439 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 306 flow. Second operand 7 states and 141 transitions. [2024-06-27 20:02:48,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 558 flow [2024-06-27 20:02:48,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 520 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 20:02:48,442 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 342 flow [2024-06-27 20:02:48,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-06-27 20:02:48,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2024-06-27 20:02:48,443 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 342 flow [2024-06-27 20:02:48,443 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 20:02:48,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:48,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:48,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:02:48,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:48,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -373985007, now seen corresponding path program 1 times [2024-06-27 20:02:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:48,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474934212] [2024-06-27 20:02:48,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:49,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:49,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474934212] [2024-06-27 20:02:49,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474934212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:49,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:49,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:49,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728816992] [2024-06-27 20:02:49,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:49,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:49,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:49,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:49,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:02:49,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:02:49,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 342 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 20:02:49,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:49,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:02:49,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:49,854 INFO L124 PetriNetUnfolderBase]: 1154/1926 cut-off events. [2024-06-27 20:02:49,854 INFO L125 PetriNetUnfolderBase]: For 8221/8221 co-relation queries the response was YES. [2024-06-27 20:02:49,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7170 conditions, 1926 events. 1154/1926 cut-off events. For 8221/8221 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9892 event pairs, 415 based on Foata normal form. 4/1913 useless extension candidates. Maximal degree in co-relation 7146. Up to 1689 conditions per place. [2024-06-27 20:02:49,864 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 64 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-27 20:02:49,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 588 flow [2024-06-27 20:02:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:02:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:02:49,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 20:02:49,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-27 20:02:49,865 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 342 flow. Second operand 8 states and 153 transitions. [2024-06-27 20:02:49,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 588 flow [2024-06-27 20:02:49,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 538 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 20:02:49,869 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 361 flow [2024-06-27 20:02:49,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=361, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-27 20:02:49,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-27 20:02:49,870 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 361 flow [2024-06-27 20:02:49,870 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 20:02:49,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:49,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:49,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:02:49,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:49,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:49,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1304265577, now seen corresponding path program 1 times [2024-06-27 20:02:49,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:49,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466845813] [2024-06-27 20:02:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:50,362 INFO 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 20:02:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466845813] [2024-06-27 20:02:50,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466845813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:50,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:50,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:02:50,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303725960] [2024-06-27 20:02:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:50,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:02:50,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:50,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:02:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:02:50,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:02:50,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 361 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 20:02:50,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:50,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:02:50,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:50,867 INFO L124 PetriNetUnfolderBase]: 1358/2143 cut-off events. [2024-06-27 20:02:50,867 INFO L125 PetriNetUnfolderBase]: For 11527/11527 co-relation queries the response was YES. [2024-06-27 20:02:50,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8451 conditions, 2143 events. 1358/2143 cut-off events. For 11527/11527 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10528 event pairs, 519 based on Foata normal form. 1/2141 useless extension candidates. Maximal degree in co-relation 8426. Up to 2024 conditions per place. [2024-06-27 20:02:50,879 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 60 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-06-27 20:02:50,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 537 flow [2024-06-27 20:02:50,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:02:50,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:02:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 20:02:50,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44390243902439025 [2024-06-27 20:02:50,880 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 361 flow. Second operand 5 states and 91 transitions. [2024-06-27 20:02:50,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 537 flow [2024-06-27 20:02:50,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 486 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:02:50,886 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 358 flow [2024-06-27 20:02:50,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-27 20:02:50,887 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-06-27 20:02:50,887 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 358 flow [2024-06-27 20:02:50,887 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 20:02:50,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:50,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:50,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:02:50,888 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:50,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:50,888 INFO L85 PathProgramCache]: Analyzing trace with hash 720602846, now seen corresponding path program 1 times [2024-06-27 20:02:50,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:50,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313673701] [2024-06-27 20:02:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:50,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:51,666 INFO 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 20:02:51,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:51,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313673701] [2024-06-27 20:02:51,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313673701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:51,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:51,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:51,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851992695] [2024-06-27 20:02:51,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:51,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:51,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:51,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:02:51,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:02:51,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 358 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:51,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:51,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:02:51,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:52,221 INFO L124 PetriNetUnfolderBase]: 1449/2253 cut-off events. [2024-06-27 20:02:52,221 INFO L125 PetriNetUnfolderBase]: For 15725/15725 co-relation queries the response was YES. [2024-06-27 20:02:52,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9488 conditions, 2253 events. 1449/2253 cut-off events. For 15725/15725 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11000 event pairs, 514 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 9462. Up to 2082 conditions per place. [2024-06-27 20:02:52,234 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 77 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-27 20:02:52,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 100 transitions, 664 flow [2024-06-27 20:02:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:02:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:02:52,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 20:02:52,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-27 20:02:52,236 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 358 flow. Second operand 8 states and 149 transitions. [2024-06-27 20:02:52,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 100 transitions, 664 flow [2024-06-27 20:02:52,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 638 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:02:52,242 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 446 flow [2024-06-27 20:02:52,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-06-27 20:02:52,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-27 20:02:52,243 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 446 flow [2024-06-27 20:02:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:52,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:52,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:52,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:02:52,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:52,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:52,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1337482308, now seen corresponding path program 2 times [2024-06-27 20:02:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:52,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180992914] [2024-06-27 20:02:52,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:52,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:53,144 INFO 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 20:02:53,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:53,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180992914] [2024-06-27 20:02:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180992914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:53,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:53,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:53,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047767291] [2024-06-27 20:02:53,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:53,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:53,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:53,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:02:53,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:02:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 446 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:02:53,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:53,642 INFO L124 PetriNetUnfolderBase]: 1471/2287 cut-off events. [2024-06-27 20:02:53,642 INFO L125 PetriNetUnfolderBase]: For 18731/18737 co-relation queries the response was YES. [2024-06-27 20:02:53,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 2287 events. 1471/2287 cut-off events. For 18731/18737 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11171 event pairs, 516 based on Foata normal form. 6/2288 useless extension candidates. Maximal degree in co-relation 10268. Up to 2069 conditions per place. [2024-06-27 20:02:53,690 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 74 selfloop transitions, 27 changer transitions 0/107 dead transitions. [2024-06-27 20:02:53,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 107 transitions, 774 flow [2024-06-27 20:02:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:02:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:02:53,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 20:02:53,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-27 20:02:53,692 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 446 flow. Second operand 8 states and 150 transitions. [2024-06-27 20:02:53,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 107 transitions, 774 flow [2024-06-27 20:02:53,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 724 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 20:02:53,703 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 544 flow [2024-06-27 20:02:53,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=544, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-27 20:02:53,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-06-27 20:02:53,705 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 544 flow [2024-06-27 20:02:53,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:53,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:53,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:53,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:02:53,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:53,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1291091382, now seen corresponding path program 3 times [2024-06-27 20:02:53,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:53,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454296175] [2024-06-27 20:02:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:53,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:54,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:54,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454296175] [2024-06-27 20:02:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454296175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825453583] [2024-06-27 20:02:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:54,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:54,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:54,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:02:54,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:02:54,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 544 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:54,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:54,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:02:54,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:54,936 INFO L124 PetriNetUnfolderBase]: 1482/2298 cut-off events. [2024-06-27 20:02:54,937 INFO L125 PetriNetUnfolderBase]: For 21893/21899 co-relation queries the response was YES. [2024-06-27 20:02:54,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 2298 events. 1482/2298 cut-off events. For 21893/21899 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11154 event pairs, 516 based on Foata normal form. 6/2299 useless extension candidates. Maximal degree in co-relation 10882. Up to 2085 conditions per place. [2024-06-27 20:02:54,949 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 76 selfloop transitions, 30 changer transitions 0/112 dead transitions. [2024-06-27 20:02:54,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 866 flow [2024-06-27 20:02:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:02:54,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:02:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 20:02:54,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-27 20:02:54,951 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 544 flow. Second operand 8 states and 149 transitions. [2024-06-27 20:02:54,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 866 flow [2024-06-27 20:02:54,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 810 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 20:02:54,962 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 614 flow [2024-06-27 20:02:54,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=614, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-06-27 20:02:54,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-27 20:02:54,963 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 614 flow [2024-06-27 20:02:54,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:54,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:54,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:54,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:02:54,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:54,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1291358292, now seen corresponding path program 4 times [2024-06-27 20:02:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613089609] [2024-06-27 20:02:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:55,742 INFO 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 20:02:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613089609] [2024-06-27 20:02:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613089609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:55,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:55,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862994670] [2024-06-27 20:02:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:55,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:55,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:55,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:02:55,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:02:55,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:55,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:55,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:02:55,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:56,426 INFO L124 PetriNetUnfolderBase]: 1515/2356 cut-off events. [2024-06-27 20:02:56,427 INFO L125 PetriNetUnfolderBase]: For 25615/25621 co-relation queries the response was YES. [2024-06-27 20:02:56,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11710 conditions, 2356 events. 1515/2356 cut-off events. For 25615/25621 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11557 event pairs, 516 based on Foata normal form. 8/2359 useless extension candidates. Maximal degree in co-relation 11677. Up to 2017 conditions per place. [2024-06-27 20:02:56,440 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 72 selfloop transitions, 55 changer transitions 0/133 dead transitions. [2024-06-27 20:02:56,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 133 transitions, 1134 flow [2024-06-27 20:02:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:02:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:02:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 20:02:56,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-27 20:02:56,442 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 614 flow. Second operand 9 states and 174 transitions. [2024-06-27 20:02:56,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 133 transitions, 1134 flow [2024-06-27 20:02:56,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 133 transitions, 1060 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:02:56,451 INFO L231 Difference]: Finished difference. Result has 88 places, 104 transitions, 831 flow [2024-06-27 20:02:56,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=831, PETRI_PLACES=88, PETRI_TRANSITIONS=104} [2024-06-27 20:02:56,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-27 20:02:56,452 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 104 transitions, 831 flow [2024-06-27 20:02:56,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:02:56,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:56,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:56,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:02:56,453 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:56,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:56,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1777525919, now seen corresponding path program 1 times [2024-06-27 20:02:56,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:56,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637391476] [2024-06-27 20:02:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:56,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:56,989 INFO 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 20:02:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:56,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637391476] [2024-06-27 20:02:56,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637391476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:56,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:56,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:02:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927818403] [2024-06-27 20:02:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:02:56,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:02:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:02:57,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:02:57,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 104 transitions, 831 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 20:02:57,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:57,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:02:57,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:57,479 INFO L124 PetriNetUnfolderBase]: 1429/2246 cut-off events. [2024-06-27 20:02:57,479 INFO L125 PetriNetUnfolderBase]: For 25221/25221 co-relation queries the response was YES. [2024-06-27 20:02:57,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11671 conditions, 2246 events. 1429/2246 cut-off events. For 25221/25221 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10950 event pairs, 474 based on Foata normal form. 2/2245 useless extension candidates. Maximal degree in co-relation 11636. Up to 2122 conditions per place. [2024-06-27 20:02:57,492 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 101 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2024-06-27 20:02:57,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 117 transitions, 1103 flow [2024-06-27 20:02:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:02:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:02:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 20:02:57,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-27 20:02:57,494 INFO L175 Difference]: Start difference. First operand has 88 places, 104 transitions, 831 flow. Second operand 6 states and 106 transitions. [2024-06-27 20:02:57,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 117 transitions, 1103 flow [2024-06-27 20:02:57,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 1051 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 20:02:57,510 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 837 flow [2024-06-27 20:02:57,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=837, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2024-06-27 20:02:57,511 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-27 20:02:57,512 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 837 flow [2024-06-27 20:02:57,512 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 20:02:57,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:57,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:57,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:02:57,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:57,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:57,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1696771466, now seen corresponding path program 1 times [2024-06-27 20:02:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:57,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173001177] [2024-06-27 20:02:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:02:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173001177] [2024-06-27 20:02:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173001177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:58,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:58,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336652719] [2024-06-27 20:02:58,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:58,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:58,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:58,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:02:58,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:02:58,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 837 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 20:02:58,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:02:58,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:02:58,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:02:59,087 INFO L124 PetriNetUnfolderBase]: 1471/2306 cut-off events. [2024-06-27 20:02:59,087 INFO L125 PetriNetUnfolderBase]: For 31849/31849 co-relation queries the response was YES. [2024-06-27 20:02:59,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12722 conditions, 2306 events. 1471/2306 cut-off events. For 31849/31849 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11672 event pairs, 337 based on Foata normal form. 4/2299 useless extension candidates. Maximal degree in co-relation 12685. Up to 2066 conditions per place. [2024-06-27 20:02:59,103 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 114 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-06-27 20:02:59,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 140 transitions, 1211 flow [2024-06-27 20:02:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:02:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:02:59,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 20:02:59,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-27 20:02:59,104 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 837 flow. Second operand 8 states and 159 transitions. [2024-06-27 20:02:59,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 140 transitions, 1211 flow [2024-06-27 20:02:59,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 1175 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:02:59,117 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 880 flow [2024-06-27 20:02:59,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=880, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2024-06-27 20:02:59,118 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 54 predicate places. [2024-06-27 20:02:59,118 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 880 flow [2024-06-27 20:02:59,118 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 20:02:59,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:02:59,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:02:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:02:59,119 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:02:59,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:02:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash 859199908, now seen corresponding path program 2 times [2024-06-27 20:02:59,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:02:59,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966345615] [2024-06-27 20:02:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:02:59,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:02:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:02:59,984 INFO 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 20:02:59,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:02:59,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966345615] [2024-06-27 20:02:59,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966345615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:02:59,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:02:59,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:02:59,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823474544] [2024-06-27 20:02:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:02:59,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:02:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:02:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:02:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:03:00,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:03:00,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 880 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 20:03:00,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:00,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:03:00,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:00,616 INFO L124 PetriNetUnfolderBase]: 1479/2336 cut-off events. [2024-06-27 20:03:00,617 INFO L125 PetriNetUnfolderBase]: For 35988/35988 co-relation queries the response was YES. [2024-06-27 20:03:00,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13235 conditions, 2336 events. 1479/2336 cut-off events. For 35988/35988 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11910 event pairs, 426 based on Foata normal form. 4/2335 useless extension candidates. Maximal degree in co-relation 13197. Up to 2105 conditions per place. [2024-06-27 20:03:00,661 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 114 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2024-06-27 20:03:00,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1258 flow [2024-06-27 20:03:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:03:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:03:00,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 20:03:00,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-27 20:03:00,663 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 880 flow. Second operand 8 states and 159 transitions. [2024-06-27 20:03:00,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1258 flow [2024-06-27 20:03:00,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 141 transitions, 1197 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:00,698 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 904 flow [2024-06-27 20:03:00,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=904, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2024-06-27 20:03:00,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-27 20:03:00,699 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 904 flow [2024-06-27 20:03:00,699 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 20:03:00,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:00,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:00,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:03:00,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:00,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1693909546, now seen corresponding path program 1 times [2024-06-27 20:03:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:00,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344913437] [2024-06-27 20:03:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:01,974 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 20:03:01,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:01,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344913437] [2024-06-27 20:03:01,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344913437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:01,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262458647] [2024-06-27 20:03:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:01,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:01,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:02,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:02,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 904 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:02,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:02,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:02,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:02,588 INFO L124 PetriNetUnfolderBase]: 1593/2474 cut-off events. [2024-06-27 20:03:02,588 INFO L125 PetriNetUnfolderBase]: For 40556/40556 co-relation queries the response was YES. [2024-06-27 20:03:02,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13985 conditions, 2474 events. 1593/2474 cut-off events. For 40556/40556 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12189 event pairs, 434 based on Foata normal form. 2/2473 useless extension candidates. Maximal degree in co-relation 13946. Up to 2283 conditions per place. [2024-06-27 20:03:02,604 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 124 selfloop transitions, 20 changer transitions 0/150 dead transitions. [2024-06-27 20:03:02,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 150 transitions, 1351 flow [2024-06-27 20:03:02,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:02,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 20:03:02,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-27 20:03:02,605 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 904 flow. Second operand 9 states and 169 transitions. [2024-06-27 20:03:02,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 150 transitions, 1351 flow [2024-06-27 20:03:02,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 150 transitions, 1281 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:02,625 INFO L231 Difference]: Finished difference. Result has 102 places, 117 transitions, 969 flow [2024-06-27 20:03:02,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=837, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=102, PETRI_TRANSITIONS=117} [2024-06-27 20:03:02,625 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-06-27 20:03:02,626 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 117 transitions, 969 flow [2024-06-27 20:03:02,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:02,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:02,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:02,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:03:02,626 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:02,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:02,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1578623336, now seen corresponding path program 3 times [2024-06-27 20:03:02,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:02,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951939599] [2024-06-27 20:03:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:02,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:03,447 INFO 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 20:03:03,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:03,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951939599] [2024-06-27 20:03:03,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951939599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:03,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:03,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:03:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005181008] [2024-06-27 20:03:03,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:03,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:03:03,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:03:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:03:03,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:03:03,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 117 transitions, 969 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 20:03:03,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:03,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:03:03,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:04,085 INFO L124 PetriNetUnfolderBase]: 1517/2409 cut-off events. [2024-06-27 20:03:04,085 INFO L125 PetriNetUnfolderBase]: For 46291/46291 co-relation queries the response was YES. [2024-06-27 20:03:04,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14361 conditions, 2409 events. 1517/2409 cut-off events. For 46291/46291 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 12324 event pairs, 409 based on Foata normal form. 8/2407 useless extension candidates. Maximal degree in co-relation 14320. Up to 2140 conditions per place. [2024-06-27 20:03:04,099 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 114 selfloop transitions, 20 changer transitions 0/146 dead transitions. [2024-06-27 20:03:04,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 146 transitions, 1353 flow [2024-06-27 20:03:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:03:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:03:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 20:03:04,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-27 20:03:04,100 INFO L175 Difference]: Start difference. First operand has 102 places, 117 transitions, 969 flow. Second operand 8 states and 156 transitions. [2024-06-27 20:03:04,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 146 transitions, 1353 flow [2024-06-27 20:03:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 146 transitions, 1265 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:04,118 INFO L231 Difference]: Finished difference. Result has 104 places, 119 transitions, 981 flow [2024-06-27 20:03:04,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=981, PETRI_PLACES=104, PETRI_TRANSITIONS=119} [2024-06-27 20:03:04,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2024-06-27 20:03:04,119 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 119 transitions, 981 flow [2024-06-27 20:03:04,119 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 20:03:04,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:04,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:03:04,119 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:04,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1578445396, now seen corresponding path program 2 times [2024-06-27 20:03:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856877121] [2024-06-27 20:03:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:05,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:05,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856877121] [2024-06-27 20:03:05,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856877121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:05,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:05,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:05,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196565970] [2024-06-27 20:03:05,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:05,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:05,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:05,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:05,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:05,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:05,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 119 transitions, 981 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:05,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:05,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:05,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:05,898 INFO L124 PetriNetUnfolderBase]: 1649/2560 cut-off events. [2024-06-27 20:03:05,898 INFO L125 PetriNetUnfolderBase]: For 50859/50859 co-relation queries the response was YES. [2024-06-27 20:03:05,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15251 conditions, 2560 events. 1649/2560 cut-off events. For 50859/50859 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 12641 event pairs, 434 based on Foata normal form. 2/2559 useless extension candidates. Maximal degree in co-relation 15209. Up to 2357 conditions per place. [2024-06-27 20:03:05,917 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 125 selfloop transitions, 25 changer transitions 0/156 dead transitions. [2024-06-27 20:03:05,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 156 transitions, 1449 flow [2024-06-27 20:03:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 20:03:05,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-27 20:03:05,919 INFO L175 Difference]: Start difference. First operand has 104 places, 119 transitions, 981 flow. Second operand 9 states and 168 transitions. [2024-06-27 20:03:05,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 156 transitions, 1449 flow [2024-06-27 20:03:05,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 1348 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 20:03:05,947 INFO L231 Difference]: Finished difference. Result has 107 places, 126 transitions, 1044 flow [2024-06-27 20:03:05,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1044, PETRI_PLACES=107, PETRI_TRANSITIONS=126} [2024-06-27 20:03:05,947 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-27 20:03:05,948 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 126 transitions, 1044 flow [2024-06-27 20:03:05,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:05,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:05,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:05,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:03:05,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:05,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:05,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1578438886, now seen corresponding path program 3 times [2024-06-27 20:03:05,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:05,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381235199] [2024-06-27 20:03:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:05,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:06,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:06,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381235199] [2024-06-27 20:03:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381235199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331035301] [2024-06-27 20:03:06,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:06,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:06,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:06,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:07,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:07,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 126 transitions, 1044 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:07,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:07,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:07,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:07,717 INFO L124 PetriNetUnfolderBase]: 1676/2604 cut-off events. [2024-06-27 20:03:07,717 INFO L125 PetriNetUnfolderBase]: For 54557/54557 co-relation queries the response was YES. [2024-06-27 20:03:07,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15661 conditions, 2604 events. 1676/2604 cut-off events. For 54557/54557 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12966 event pairs, 434 based on Foata normal form. 2/2603 useless extension candidates. Maximal degree in co-relation 15618. Up to 2325 conditions per place. [2024-06-27 20:03:07,734 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 120 selfloop transitions, 45 changer transitions 0/171 dead transitions. [2024-06-27 20:03:07,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 171 transitions, 1670 flow [2024-06-27 20:03:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 20:03:07,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-27 20:03:07,736 INFO L175 Difference]: Start difference. First operand has 107 places, 126 transitions, 1044 flow. Second operand 10 states and 191 transitions. [2024-06-27 20:03:07,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 171 transitions, 1670 flow [2024-06-27 20:03:07,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 171 transitions, 1596 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 20:03:07,793 INFO L231 Difference]: Finished difference. Result has 114 places, 132 transitions, 1218 flow [2024-06-27 20:03:07,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1218, PETRI_PLACES=114, PETRI_TRANSITIONS=132} [2024-06-27 20:03:07,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-27 20:03:07,799 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 132 transitions, 1218 flow [2024-06-27 20:03:07,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:07,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:07,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:07,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:03:07,800 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:07,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1578438638, now seen corresponding path program 1 times [2024-06-27 20:03:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992945026] [2024-06-27 20:03:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992945026] [2024-06-27 20:03:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992945026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394258658] [2024-06-27 20:03:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:08,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:08,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:08,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 132 transitions, 1218 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:08,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:08,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:08,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:09,335 INFO L124 PetriNetUnfolderBase]: 1699/2637 cut-off events. [2024-06-27 20:03:09,335 INFO L125 PetriNetUnfolderBase]: For 61593/61593 co-relation queries the response was YES. [2024-06-27 20:03:09,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16462 conditions, 2637 events. 1699/2637 cut-off events. For 61593/61593 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13136 event pairs, 431 based on Foata normal form. 4/2635 useless extension candidates. Maximal degree in co-relation 16417. Up to 2440 conditions per place. [2024-06-27 20:03:09,352 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 140 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-27 20:03:09,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 165 transitions, 1662 flow [2024-06-27 20:03:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 20:03:09,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-27 20:03:09,358 INFO L175 Difference]: Start difference. First operand has 114 places, 132 transitions, 1218 flow. Second operand 9 states and 166 transitions. [2024-06-27 20:03:09,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 165 transitions, 1662 flow [2024-06-27 20:03:09,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 165 transitions, 1534 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 20:03:09,388 INFO L231 Difference]: Finished difference. Result has 116 places, 134 transitions, 1187 flow [2024-06-27 20:03:09,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1187, PETRI_PLACES=116, PETRI_TRANSITIONS=134} [2024-06-27 20:03:09,388 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 74 predicate places. [2024-06-27 20:03:09,388 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 134 transitions, 1187 flow [2024-06-27 20:03:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:09,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:09,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:09,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:03:09,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:09,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:09,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1578618376, now seen corresponding path program 4 times [2024-06-27 20:03:09,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827335400] [2024-06-27 20:03:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:09,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:10,432 INFO 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 20:03:10,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:10,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827335400] [2024-06-27 20:03:10,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827335400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:10,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:10,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644520767] [2024-06-27 20:03:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:10,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:10,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:10,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:10,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 134 transitions, 1187 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:10,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:10,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:10,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:11,219 INFO L124 PetriNetUnfolderBase]: 1691/2627 cut-off events. [2024-06-27 20:03:11,220 INFO L125 PetriNetUnfolderBase]: For 65080/65080 co-relation queries the response was YES. [2024-06-27 20:03:11,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16539 conditions, 2627 events. 1691/2627 cut-off events. For 65080/65080 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13045 event pairs, 433 based on Foata normal form. 2/2626 useless extension candidates. Maximal degree in co-relation 16493. Up to 2419 conditions per place. [2024-06-27 20:03:11,234 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 133 selfloop transitions, 25 changer transitions 0/164 dead transitions. [2024-06-27 20:03:11,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 1579 flow [2024-06-27 20:03:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:11,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 20:03:11,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-27 20:03:11,236 INFO L175 Difference]: Start difference. First operand has 116 places, 134 transitions, 1187 flow. Second operand 9 states and 168 transitions. [2024-06-27 20:03:11,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 1579 flow [2024-06-27 20:03:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 164 transitions, 1464 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 20:03:11,275 INFO L231 Difference]: Finished difference. Result has 118 places, 134 transitions, 1130 flow [2024-06-27 20:03:11,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=118, PETRI_TRANSITIONS=134} [2024-06-27 20:03:11,276 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-27 20:03:11,276 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 134 transitions, 1130 flow [2024-06-27 20:03:11,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:11,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:11,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:11,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:03:11,276 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:11,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:11,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2007119296, now seen corresponding path program 1 times [2024-06-27 20:03:11,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:11,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094618156] [2024-06-27 20:03:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:11,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:11,817 INFO 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 20:03:11,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:11,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094618156] [2024-06-27 20:03:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094618156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:11,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:11,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:03:11,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567053354] [2024-06-27 20:03:11,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:11,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:03:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:11,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:03:11,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:03:11,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:03:11,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 134 transitions, 1130 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:11,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:11,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:03:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:12,349 INFO L124 PetriNetUnfolderBase]: 1817/2759 cut-off events. [2024-06-27 20:03:12,349 INFO L125 PetriNetUnfolderBase]: For 69790/69790 co-relation queries the response was YES. [2024-06-27 20:03:12,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17354 conditions, 2759 events. 1817/2759 cut-off events. For 69790/69790 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13325 event pairs, 471 based on Foata normal form. 2/2758 useless extension candidates. Maximal degree in co-relation 17307. Up to 2657 conditions per place. [2024-06-27 20:03:12,364 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 136 selfloop transitions, 18 changer transitions 0/158 dead transitions. [2024-06-27 20:03:12,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 158 transitions, 1612 flow [2024-06-27 20:03:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:03:12,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:03:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 20:03:12,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-27 20:03:12,366 INFO L175 Difference]: Start difference. First operand has 118 places, 134 transitions, 1130 flow. Second operand 6 states and 111 transitions. [2024-06-27 20:03:12,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 158 transitions, 1612 flow [2024-06-27 20:03:12,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 158 transitions, 1528 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:03:12,399 INFO L231 Difference]: Finished difference. Result has 115 places, 140 transitions, 1159 flow [2024-06-27 20:03:12,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1159, PETRI_PLACES=115, PETRI_TRANSITIONS=140} [2024-06-27 20:03:12,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-27 20:03:12,400 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 140 transitions, 1159 flow [2024-06-27 20:03:12,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:12,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:12,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:12,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:03:12,401 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:12,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1487538224, now seen corresponding path program 4 times [2024-06-27 20:03:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:12,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271175937] [2024-06-27 20:03:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:13,275 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 20:03:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:13,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271175937] [2024-06-27 20:03:13,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271175937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:13,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:03:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001561698] [2024-06-27 20:03:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:13,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:03:13,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:03:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:03:13,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 41 [2024-06-27 20:03:13,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 140 transitions, 1159 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 20:03:13,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:13,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 41 [2024-06-27 20:03:13,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:13,918 INFO L124 PetriNetUnfolderBase]: 1599/2535 cut-off events. [2024-06-27 20:03:13,919 INFO L125 PetriNetUnfolderBase]: For 74975/74981 co-relation queries the response was YES. [2024-06-27 20:03:13,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16539 conditions, 2535 events. 1599/2535 cut-off events. For 74975/74981 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13055 event pairs, 398 based on Foata normal form. 12/2542 useless extension candidates. Maximal degree in co-relation 16492. Up to 2196 conditions per place. [2024-06-27 20:03:13,936 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 110 selfloop transitions, 41 changer transitions 0/166 dead transitions. [2024-06-27 20:03:13,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 166 transitions, 1577 flow [2024-06-27 20:03:13,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:03:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:03:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 20:03:13,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-27 20:03:13,937 INFO L175 Difference]: Start difference. First operand has 115 places, 140 transitions, 1159 flow. Second operand 8 states and 156 transitions. [2024-06-27 20:03:13,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 166 transitions, 1577 flow [2024-06-27 20:03:13,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 166 transitions, 1543 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 20:03:13,970 INFO L231 Difference]: Finished difference. Result has 121 places, 142 transitions, 1276 flow [2024-06-27 20:03:13,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=121, PETRI_TRANSITIONS=142} [2024-06-27 20:03:13,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-27 20:03:13,971 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 142 transitions, 1276 flow [2024-06-27 20:03:13,971 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 20:03:13,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:13,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:13,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:03:13,971 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:13,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1147483400, now seen corresponding path program 5 times [2024-06-27 20:03:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360136626] [2024-06-27 20:03:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:14,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360136626] [2024-06-27 20:03:14,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360136626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:14,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:14,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:14,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952660122] [2024-06-27 20:03:14,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:14,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:14,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:14,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:15,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:15,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 142 transitions, 1276 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:15,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:15,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:15,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:15,608 INFO L124 PetriNetUnfolderBase]: 1708/2654 cut-off events. [2024-06-27 20:03:15,608 INFO L125 PetriNetUnfolderBase]: For 79723/79729 co-relation queries the response was YES. [2024-06-27 20:03:15,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17469 conditions, 2654 events. 1708/2654 cut-off events. For 79723/79729 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13280 event pairs, 435 based on Foata normal form. 6/2655 useless extension candidates. Maximal degree in co-relation 17420. Up to 2307 conditions per place. [2024-06-27 20:03:15,657 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 115 selfloop transitions, 58 changer transitions 0/181 dead transitions. [2024-06-27 20:03:15,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 181 transitions, 1798 flow [2024-06-27 20:03:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 20:03:15,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 20:03:15,659 INFO L175 Difference]: Start difference. First operand has 121 places, 142 transitions, 1276 flow. Second operand 10 states and 190 transitions. [2024-06-27 20:03:15,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 181 transitions, 1798 flow [2024-06-27 20:03:15,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 181 transitions, 1655 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:15,708 INFO L231 Difference]: Finished difference. Result has 126 places, 147 transitions, 1365 flow [2024-06-27 20:03:15,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1365, PETRI_PLACES=126, PETRI_TRANSITIONS=147} [2024-06-27 20:03:15,708 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-27 20:03:15,708 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 147 transitions, 1365 flow [2024-06-27 20:03:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:15,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:15,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:15,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:03:15,709 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1147483648, now seen corresponding path program 2 times [2024-06-27 20:03:15,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:15,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039075437] [2024-06-27 20:03:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:15,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:16,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:16,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039075437] [2024-06-27 20:03:16,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039075437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:16,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:16,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858083093] [2024-06-27 20:03:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:16,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:16,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:16,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:16,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 1365 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:16,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:16,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:16,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:17,132 INFO L124 PetriNetUnfolderBase]: 1725/2686 cut-off events. [2024-06-27 20:03:17,132 INFO L125 PetriNetUnfolderBase]: For 86333/86339 co-relation queries the response was YES. [2024-06-27 20:03:17,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18013 conditions, 2686 events. 1725/2686 cut-off events. For 86333/86339 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13475 event pairs, 445 based on Foata normal form. 8/2689 useless extension candidates. Maximal degree in co-relation 17962. Up to 2426 conditions per place. [2024-06-27 20:03:17,149 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 137 selfloop transitions, 32 changer transitions 0/177 dead transitions. [2024-06-27 20:03:17,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 177 transitions, 1829 flow [2024-06-27 20:03:17,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 20:03:17,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-27 20:03:17,151 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 1365 flow. Second operand 9 states and 166 transitions. [2024-06-27 20:03:17,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 177 transitions, 1829 flow [2024-06-27 20:03:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 177 transitions, 1655 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 20:03:17,193 INFO L231 Difference]: Finished difference. Result has 128 places, 149 transitions, 1322 flow [2024-06-27 20:03:17,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1322, PETRI_PLACES=128, PETRI_TRANSITIONS=149} [2024-06-27 20:03:17,193 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-27 20:03:17,193 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 149 transitions, 1322 flow [2024-06-27 20:03:17,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:17,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:17,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:03:17,194 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:17,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1377699568, now seen corresponding path program 3 times [2024-06-27 20:03:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:17,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338679960] [2024-06-27 20:03:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:17,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:18,085 INFO 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 20:03:18,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:18,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338679960] [2024-06-27 20:03:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338679960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:18,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908941009] [2024-06-27 20:03:18,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:18,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:18,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 149 transitions, 1322 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:18,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:18,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:18,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:18,744 INFO L124 PetriNetUnfolderBase]: 1742/2713 cut-off events. [2024-06-27 20:03:18,744 INFO L125 PetriNetUnfolderBase]: For 92638/92644 co-relation queries the response was YES. [2024-06-27 20:03:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18383 conditions, 2713 events. 1742/2713 cut-off events. For 92638/92644 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13637 event pairs, 403 based on Foata normal form. 8/2716 useless extension candidates. Maximal degree in co-relation 18331. Up to 2329 conditions per place. [2024-06-27 20:03:18,764 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 126 selfloop transitions, 50 changer transitions 0/184 dead transitions. [2024-06-27 20:03:18,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 184 transitions, 1972 flow [2024-06-27 20:03:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 20:03:18,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-27 20:03:18,794 INFO L175 Difference]: Start difference. First operand has 128 places, 149 transitions, 1322 flow. Second operand 9 states and 170 transitions. [2024-06-27 20:03:18,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 184 transitions, 1972 flow [2024-06-27 20:03:18,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 184 transitions, 1859 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 20:03:18,843 INFO L231 Difference]: Finished difference. Result has 130 places, 153 transitions, 1440 flow [2024-06-27 20:03:18,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1440, PETRI_PLACES=130, PETRI_TRANSITIONS=153} [2024-06-27 20:03:18,848 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-27 20:03:18,849 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 153 transitions, 1440 flow [2024-06-27 20:03:18,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:18,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:18,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:18,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:03:18,849 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:18,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1723898282, now seen corresponding path program 4 times [2024-06-27 20:03:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062925074] [2024-06-27 20:03:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:19,669 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 20:03:19,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:19,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062925074] [2024-06-27 20:03:19,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062925074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:19,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:19,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:19,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314411397] [2024-06-27 20:03:19,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:19,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:19,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:19,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:19,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:19,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 153 transitions, 1440 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:19,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:19,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:19,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:20,354 INFO L124 PetriNetUnfolderBase]: 1759/2735 cut-off events. [2024-06-27 20:03:20,355 INFO L125 PetriNetUnfolderBase]: For 99303/99309 co-relation queries the response was YES. [2024-06-27 20:03:20,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18909 conditions, 2735 events. 1759/2735 cut-off events. For 99303/99309 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13730 event pairs, 440 based on Foata normal form. 8/2738 useless extension candidates. Maximal degree in co-relation 18856. Up to 2444 conditions per place. [2024-06-27 20:03:20,373 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 132 selfloop transitions, 43 changer transitions 0/183 dead transitions. [2024-06-27 20:03:20,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 183 transitions, 1924 flow [2024-06-27 20:03:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 20:03:20,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-27 20:03:20,376 INFO L175 Difference]: Start difference. First operand has 130 places, 153 transitions, 1440 flow. Second operand 9 states and 167 transitions. [2024-06-27 20:03:20,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 183 transitions, 1924 flow [2024-06-27 20:03:20,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 183 transitions, 1786 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:20,442 INFO L231 Difference]: Finished difference. Result has 133 places, 155 transitions, 1463 flow [2024-06-27 20:03:20,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1463, PETRI_PLACES=133, PETRI_TRANSITIONS=155} [2024-06-27 20:03:20,443 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-06-27 20:03:20,443 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 155 transitions, 1463 flow [2024-06-27 20:03:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:20,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:20,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:20,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:03:20,444 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:20,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1377402650, now seen corresponding path program 6 times [2024-06-27 20:03:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:20,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88698715] [2024-06-27 20:03:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:20,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:21,321 INFO 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 20:03:21,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88698715] [2024-06-27 20:03:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88698715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:21,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:21,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824492294] [2024-06-27 20:03:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:21,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:21,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:21,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:21,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 155 transitions, 1463 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:21,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:21,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:21,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:21,963 INFO L124 PetriNetUnfolderBase]: 1770/2753 cut-off events. [2024-06-27 20:03:21,963 INFO L125 PetriNetUnfolderBase]: For 103616/103619 co-relation queries the response was YES. [2024-06-27 20:03:21,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 2753 events. 1770/2753 cut-off events. For 103616/103619 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13876 event pairs, 447 based on Foata normal form. 2/2748 useless extension candidates. Maximal degree in co-relation 18879. Up to 2301 conditions per place. [2024-06-27 20:03:21,982 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 96 selfloop transitions, 86 changer transitions 0/190 dead transitions. [2024-06-27 20:03:21,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 190 transitions, 2181 flow [2024-06-27 20:03:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 20:03:21,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-27 20:03:21,983 INFO L175 Difference]: Start difference. First operand has 133 places, 155 transitions, 1463 flow. Second operand 9 states and 173 transitions. [2024-06-27 20:03:21,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 190 transitions, 2181 flow [2024-06-27 20:03:22,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 190 transitions, 2004 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 20:03:22,050 INFO L231 Difference]: Finished difference. Result has 133 places, 161 transitions, 1644 flow [2024-06-27 20:03:22,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=133, PETRI_TRANSITIONS=161} [2024-06-27 20:03:22,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 91 predicate places. [2024-06-27 20:03:22,060 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 161 transitions, 1644 flow [2024-06-27 20:03:22,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:22,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:22,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:22,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:03:22,060 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:22,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1141047800, now seen corresponding path program 7 times [2024-06-27 20:03:22,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:22,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379065547] [2024-06-27 20:03:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:22,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:23,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:23,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379065547] [2024-06-27 20:03:23,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379065547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:23,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:23,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784124579] [2024-06-27 20:03:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:23,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:23,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 161 transitions, 1644 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:23,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:23,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:23,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:23,894 INFO L124 PetriNetUnfolderBase]: 1792/2793 cut-off events. [2024-06-27 20:03:23,894 INFO L125 PetriNetUnfolderBase]: For 110955/110961 co-relation queries the response was YES. [2024-06-27 20:03:23,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19583 conditions, 2793 events. 1792/2793 cut-off events. For 110955/110961 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14114 event pairs, 445 based on Foata normal form. 6/2794 useless extension candidates. Maximal degree in co-relation 19530. Up to 2483 conditions per place. [2024-06-27 20:03:23,914 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 140 selfloop transitions, 46 changer transitions 0/194 dead transitions. [2024-06-27 20:03:23,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 194 transitions, 2180 flow [2024-06-27 20:03:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:23,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 20:03:23,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-27 20:03:23,926 INFO L175 Difference]: Start difference. First operand has 133 places, 161 transitions, 1644 flow. Second operand 9 states and 169 transitions. [2024-06-27 20:03:23,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 194 transitions, 2180 flow [2024-06-27 20:03:23,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 2034 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 20:03:23,987 INFO L231 Difference]: Finished difference. Result has 137 places, 167 transitions, 1700 flow [2024-06-27 20:03:23,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1700, PETRI_PLACES=137, PETRI_TRANSITIONS=167} [2024-06-27 20:03:23,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-27 20:03:23,988 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 167 transitions, 1700 flow [2024-06-27 20:03:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:23,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:23,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:23,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:03:23,988 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:23,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:23,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1141227538, now seen corresponding path program 5 times [2024-06-27 20:03:23,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:23,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145616740] [2024-06-27 20:03:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:24,781 INFO 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 20:03:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145616740] [2024-06-27 20:03:24,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145616740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:24,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:24,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:24,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570703021] [2024-06-27 20:03:24,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:24,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:24,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:24,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 167 transitions, 1700 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:24,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:24,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:24,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:25,396 INFO L124 PetriNetUnfolderBase]: 1784/2781 cut-off events. [2024-06-27 20:03:25,397 INFO L125 PetriNetUnfolderBase]: For 115145/115151 co-relation queries the response was YES. [2024-06-27 20:03:25,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19586 conditions, 2781 events. 1784/2781 cut-off events. For 115145/115151 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14058 event pairs, 438 based on Foata normal form. 8/2784 useless extension candidates. Maximal degree in co-relation 19531. Up to 2516 conditions per place. [2024-06-27 20:03:25,415 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 156 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-27 20:03:25,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 195 transitions, 2144 flow [2024-06-27 20:03:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 20:03:25,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-27 20:03:25,417 INFO L175 Difference]: Start difference. First operand has 137 places, 167 transitions, 1700 flow. Second operand 9 states and 167 transitions. [2024-06-27 20:03:25,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 195 transitions, 2144 flow [2024-06-27 20:03:25,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 195 transitions, 1950 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:25,510 INFO L231 Difference]: Finished difference. Result has 138 places, 167 transitions, 1575 flow [2024-06-27 20:03:25,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1575, PETRI_PLACES=138, PETRI_TRANSITIONS=167} [2024-06-27 20:03:25,510 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-27 20:03:25,511 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 167 transitions, 1575 flow [2024-06-27 20:03:25,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:25,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:25,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:25,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:03:25,511 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:25,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1141220780, now seen corresponding path program 8 times [2024-06-27 20:03:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049158945] [2024-06-27 20:03:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:26,463 INFO 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 20:03:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049158945] [2024-06-27 20:03:26,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049158945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:26,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:26,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631939283] [2024-06-27 20:03:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:26,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:26,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 167 transitions, 1575 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:26,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:26,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:26,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:27,106 INFO L124 PetriNetUnfolderBase]: 1779/2774 cut-off events. [2024-06-27 20:03:27,107 INFO L125 PetriNetUnfolderBase]: For 117727/117733 co-relation queries the response was YES. [2024-06-27 20:03:27,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 2774 events. 1779/2774 cut-off events. For 117727/117733 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14049 event pairs, 438 based on Foata normal form. 6/2775 useless extension candidates. Maximal degree in co-relation 19347. Up to 2464 conditions per place. [2024-06-27 20:03:27,126 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 141 selfloop transitions, 45 changer transitions 0/194 dead transitions. [2024-06-27 20:03:27,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 194 transitions, 2015 flow [2024-06-27 20:03:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:03:27,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:03:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 20:03:27,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-27 20:03:27,128 INFO L175 Difference]: Start difference. First operand has 138 places, 167 transitions, 1575 flow. Second operand 9 states and 170 transitions. [2024-06-27 20:03:27,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 194 transitions, 2015 flow [2024-06-27 20:03:27,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 194 transitions, 1899 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:27,227 INFO L231 Difference]: Finished difference. Result has 139 places, 167 transitions, 1557 flow [2024-06-27 20:03:27,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1557, PETRI_PLACES=139, PETRI_TRANSITIONS=167} [2024-06-27 20:03:27,228 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-27 20:03:27,228 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 167 transitions, 1557 flow [2024-06-27 20:03:27,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:27,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:27,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:27,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:03:27,229 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:27,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:27,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1487722674, now seen corresponding path program 9 times [2024-06-27 20:03:27,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:27,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2893764] [2024-06-27 20:03:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:27,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2893764] [2024-06-27 20:03:28,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2893764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:28,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:28,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:03:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310919401] [2024-06-27 20:03:28,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:03:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:03:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:03:28,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:28,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 167 transitions, 1557 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:28,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:28,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:28,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:28,796 INFO L124 PetriNetUnfolderBase]: 1774/2767 cut-off events. [2024-06-27 20:03:28,796 INFO L125 PetriNetUnfolderBase]: For 122630/122636 co-relation queries the response was YES. [2024-06-27 20:03:28,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19407 conditions, 2767 events. 1774/2767 cut-off events. For 122630/122636 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 13976 event pairs, 438 based on Foata normal form. 6/2768 useless extension candidates. Maximal degree in co-relation 19352. Up to 2397 conditions per place. [2024-06-27 20:03:28,816 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 132 selfloop transitions, 61 changer transitions 0/201 dead transitions. [2024-06-27 20:03:28,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 201 transitions, 2029 flow [2024-06-27 20:03:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:28,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-27 20:03:28,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-27 20:03:28,817 INFO L175 Difference]: Start difference. First operand has 139 places, 167 transitions, 1557 flow. Second operand 10 states and 191 transitions. [2024-06-27 20:03:28,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 201 transitions, 2029 flow [2024-06-27 20:03:28,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 201 transitions, 1825 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:28,905 INFO L231 Difference]: Finished difference. Result has 141 places, 167 transitions, 1483 flow [2024-06-27 20:03:28,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1483, PETRI_PLACES=141, PETRI_TRANSITIONS=167} [2024-06-27 20:03:28,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-27 20:03:28,906 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 167 transitions, 1483 flow [2024-06-27 20:03:28,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:28,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:28,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:28,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:03:28,906 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:28,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash 731258806, now seen corresponding path program 2 times [2024-06-27 20:03:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171510493] [2024-06-27 20:03:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:28,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:29,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:29,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:29,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171510493] [2024-06-27 20:03:29,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171510493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:29,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:29,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:03:29,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437788749] [2024-06-27 20:03:29,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:29,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:03:29,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:03:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:03:29,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:03:29,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 167 transitions, 1483 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:29,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:29,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:03:29,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:29,900 INFO L124 PetriNetUnfolderBase]: 1872/2860 cut-off events. [2024-06-27 20:03:29,900 INFO L125 PetriNetUnfolderBase]: For 127260/127263 co-relation queries the response was YES. [2024-06-27 20:03:29,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19948 conditions, 2860 events. 1872/2860 cut-off events. For 127260/127263 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14005 event pairs, 482 based on Foata normal form. 2/2855 useless extension candidates. Maximal degree in co-relation 19893. Up to 2747 conditions per place. [2024-06-27 20:03:29,919 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 156 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2024-06-27 20:03:29,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 178 transitions, 1877 flow [2024-06-27 20:03:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:03:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:03:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 20:03:29,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:03:29,921 INFO L175 Difference]: Start difference. First operand has 141 places, 167 transitions, 1483 flow. Second operand 6 states and 105 transitions. [2024-06-27 20:03:29,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 178 transitions, 1877 flow [2024-06-27 20:03:29,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 178 transitions, 1651 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 20:03:29,997 INFO L231 Difference]: Finished difference. Result has 138 places, 167 transitions, 1299 flow [2024-06-27 20:03:29,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1299, PETRI_PLACES=138, PETRI_TRANSITIONS=167} [2024-06-27 20:03:29,998 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-27 20:03:29,998 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 167 transitions, 1299 flow [2024-06-27 20:03:29,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:29,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:29,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:29,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:03:29,998 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:29,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:29,999 INFO L85 PathProgramCache]: Analyzing trace with hash 725550838, now seen corresponding path program 1 times [2024-06-27 20:03:29,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:29,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843582902] [2024-06-27 20:03:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:30,479 INFO 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 20:03:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843582902] [2024-06-27 20:03:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843582902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:30,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:30,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:03:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59602294] [2024-06-27 20:03:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:03:30,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:03:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:03:30,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:30,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 167 transitions, 1299 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 20:03:30,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:30,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:30,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:30,891 INFO L124 PetriNetUnfolderBase]: 1673/2643 cut-off events. [2024-06-27 20:03:30,892 INFO L125 PetriNetUnfolderBase]: For 110739/110739 co-relation queries the response was YES. [2024-06-27 20:03:30,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17579 conditions, 2643 events. 1673/2643 cut-off events. For 110739/110739 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 13383 event pairs, 394 based on Foata normal form. 1/2641 useless extension candidates. Maximal degree in co-relation 17523. Up to 2489 conditions per place. [2024-06-27 20:03:30,912 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 165 selfloop transitions, 16 changer transitions 0/186 dead transitions. [2024-06-27 20:03:30,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 186 transitions, 1819 flow [2024-06-27 20:03:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:03:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:03:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 20:03:30,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-27 20:03:30,913 INFO L175 Difference]: Start difference. First operand has 138 places, 167 transitions, 1299 flow. Second operand 6 states and 111 transitions. [2024-06-27 20:03:30,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 186 transitions, 1819 flow [2024-06-27 20:03:30,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 186 transitions, 1771 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:03:30,982 INFO L231 Difference]: Finished difference. Result has 139 places, 173 transitions, 1351 flow [2024-06-27 20:03:30,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1351, PETRI_PLACES=139, PETRI_TRANSITIONS=173} [2024-06-27 20:03:30,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-06-27 20:03:30,983 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 173 transitions, 1351 flow [2024-06-27 20:03:30,983 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 20:03:30,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:30,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:30,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:03:30,984 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:30,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2074735706, now seen corresponding path program 2 times [2024-06-27 20:03:30,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:30,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231578840] [2024-06-27 20:03:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:30,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:31,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:31,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231578840] [2024-06-27 20:03:31,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231578840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:31,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:31,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:03:31,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310202951] [2024-06-27 20:03:31,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:31,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:03:31,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:03:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:03:31,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:31,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 173 transitions, 1351 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 20:03:31,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:31,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:31,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:31,938 INFO L124 PetriNetUnfolderBase]: 1670/2639 cut-off events. [2024-06-27 20:03:31,939 INFO L125 PetriNetUnfolderBase]: For 116103/116103 co-relation queries the response was YES. [2024-06-27 20:03:31,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17924 conditions, 2639 events. 1670/2639 cut-off events. For 116103/116103 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13353 event pairs, 393 based on Foata normal form. 1/2637 useless extension candidates. Maximal degree in co-relation 17867. Up to 2498 conditions per place. [2024-06-27 20:03:31,956 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 166 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2024-06-27 20:03:31,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 182 transitions, 1727 flow [2024-06-27 20:03:31,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:03:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:03:31,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 20:03:31,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:03:31,958 INFO L175 Difference]: Start difference. First operand has 139 places, 173 transitions, 1351 flow. Second operand 6 states and 105 transitions. [2024-06-27 20:03:31,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 182 transitions, 1727 flow [2024-06-27 20:03:32,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 182 transitions, 1619 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 20:03:32,029 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 1271 flow [2024-06-27 20:03:32,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1271, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2024-06-27 20:03:32,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-27 20:03:32,030 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 1271 flow [2024-06-27 20:03:32,030 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 20:03:32,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:32,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:32,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:03:32,030 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:32,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:32,031 INFO L85 PathProgramCache]: Analyzing trace with hash 475179938, now seen corresponding path program 1 times [2024-06-27 20:03:32,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:32,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133733876] [2024-06-27 20:03:32,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:33,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:33,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133733876] [2024-06-27 20:03:33,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133733876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:33,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:33,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:33,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423238347] [2024-06-27 20:03:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:33,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:33,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 1271 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 20:03:33,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:33,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:33,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:34,137 INFO L124 PetriNetUnfolderBase]: 1839/2867 cut-off events. [2024-06-27 20:03:34,137 INFO L125 PetriNetUnfolderBase]: For 155548/155548 co-relation queries the response was YES. [2024-06-27 20:03:34,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20216 conditions, 2867 events. 1839/2867 cut-off events. For 155548/155548 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14626 event pairs, 440 based on Foata normal form. 16/2875 useless extension candidates. Maximal degree in co-relation 20158. Up to 2563 conditions per place. [2024-06-27 20:03:34,156 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 184 selfloop transitions, 21 changer transitions 0/215 dead transitions. [2024-06-27 20:03:34,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 215 transitions, 1865 flow [2024-06-27 20:03:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:34,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 20:03:34,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-27 20:03:34,157 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 1271 flow. Second operand 10 states and 188 transitions. [2024-06-27 20:03:34,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 215 transitions, 1865 flow [2024-06-27 20:03:34,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 215 transitions, 1835 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 20:03:34,218 INFO L231 Difference]: Finished difference. Result has 147 places, 174 transitions, 1340 flow [2024-06-27 20:03:34,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1340, PETRI_PLACES=147, PETRI_TRANSITIONS=174} [2024-06-27 20:03:34,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-27 20:03:34,219 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 174 transitions, 1340 flow [2024-06-27 20:03:34,219 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 20:03:34,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:34,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:34,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:03:34,220 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:34,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:34,220 INFO L85 PathProgramCache]: Analyzing trace with hash 619070468, now seen corresponding path program 2 times [2024-06-27 20:03:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:34,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702406302] [2024-06-27 20:03:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:34,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702406302] [2024-06-27 20:03:35,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702406302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:35,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:35,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:35,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34868375] [2024-06-27 20:03:35,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:35,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:35,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:35,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:35,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:35,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:35,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 174 transitions, 1340 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 20:03:35,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:35,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:35,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:36,242 INFO L124 PetriNetUnfolderBase]: 1897/2977 cut-off events. [2024-06-27 20:03:36,242 INFO L125 PetriNetUnfolderBase]: For 167286/167286 co-relation queries the response was YES. [2024-06-27 20:03:36,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21291 conditions, 2977 events. 1897/2977 cut-off events. For 167286/167286 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15459 event pairs, 457 based on Foata normal form. 16/2990 useless extension candidates. Maximal degree in co-relation 21232. Up to 2649 conditions per place. [2024-06-27 20:03:36,265 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 177 selfloop transitions, 26 changer transitions 0/213 dead transitions. [2024-06-27 20:03:36,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 213 transitions, 1924 flow [2024-06-27 20:03:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 20:03:36,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-27 20:03:36,267 INFO L175 Difference]: Start difference. First operand has 147 places, 174 transitions, 1340 flow. Second operand 10 states and 187 transitions. [2024-06-27 20:03:36,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 213 transitions, 1924 flow [2024-06-27 20:03:36,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 213 transitions, 1863 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:36,367 INFO L231 Difference]: Finished difference. Result has 149 places, 175 transitions, 1390 flow [2024-06-27 20:03:36,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=149, PETRI_TRANSITIONS=175} [2024-06-27 20:03:36,368 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 107 predicate places. [2024-06-27 20:03:36,368 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 175 transitions, 1390 flow [2024-06-27 20:03:36,368 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 20:03:36,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:36,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:36,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:03:36,369 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:36,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1686956260, now seen corresponding path program 3 times [2024-06-27 20:03:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:36,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907074139] [2024-06-27 20:03:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:37,499 INFO 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 20:03:37,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:37,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907074139] [2024-06-27 20:03:37,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907074139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:37,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:37,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:37,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939443566] [2024-06-27 20:03:37,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:37,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:37,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:37,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:37,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 175 transitions, 1390 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 20:03:37,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:37,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:37,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:38,420 INFO L124 PetriNetUnfolderBase]: 2044/3220 cut-off events. [2024-06-27 20:03:38,421 INFO L125 PetriNetUnfolderBase]: For 189220/189220 co-relation queries the response was YES. [2024-06-27 20:03:38,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23747 conditions, 3220 events. 2044/3220 cut-off events. For 189220/189220 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17076 event pairs, 481 based on Foata normal form. 12/3226 useless extension candidates. Maximal degree in co-relation 23687. Up to 2609 conditions per place. [2024-06-27 20:03:38,443 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 174 selfloop transitions, 38 changer transitions 0/222 dead transitions. [2024-06-27 20:03:38,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 222 transitions, 2226 flow [2024-06-27 20:03:38,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-27 20:03:38,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47073170731707314 [2024-06-27 20:03:38,445 INFO L175 Difference]: Start difference. First operand has 149 places, 175 transitions, 1390 flow. Second operand 10 states and 193 transitions. [2024-06-27 20:03:38,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 222 transitions, 2226 flow [2024-06-27 20:03:38,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 222 transitions, 2153 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:38,532 INFO L231 Difference]: Finished difference. Result has 152 places, 178 transitions, 1525 flow [2024-06-27 20:03:38,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1525, PETRI_PLACES=152, PETRI_TRANSITIONS=178} [2024-06-27 20:03:38,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-27 20:03:38,533 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 178 transitions, 1525 flow [2024-06-27 20:03:38,533 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 20:03:38,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:38,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:38,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:03:38,534 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:38,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1686963700, now seen corresponding path program 4 times [2024-06-27 20:03:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500762278] [2024-06-27 20:03:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500762278] [2024-06-27 20:03:39,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500762278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:39,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:39,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147269880] [2024-06-27 20:03:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:39,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:39,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:39,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 178 transitions, 1525 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 20:03:39,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:39,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:40,640 INFO L124 PetriNetUnfolderBase]: 2116/3342 cut-off events. [2024-06-27 20:03:40,640 INFO L125 PetriNetUnfolderBase]: For 202975/202975 co-relation queries the response was YES. [2024-06-27 20:03:40,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24802 conditions, 3342 events. 2116/3342 cut-off events. For 202975/202975 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 18039 event pairs, 508 based on Foata normal form. 16/3355 useless extension candidates. Maximal degree in co-relation 24740. Up to 2969 conditions per place. [2024-06-27 20:03:40,665 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 176 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-06-27 20:03:40,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 223 transitions, 2155 flow [2024-06-27 20:03:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:03:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:03:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 20:03:40,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567627494456763 [2024-06-27 20:03:40,666 INFO L175 Difference]: Start difference. First operand has 152 places, 178 transitions, 1525 flow. Second operand 11 states and 206 transitions. [2024-06-27 20:03:40,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 223 transitions, 2155 flow [2024-06-27 20:03:40,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 223 transitions, 2081 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:40,804 INFO L231 Difference]: Finished difference. Result has 157 places, 181 transitions, 1607 flow [2024-06-27 20:03:40,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1607, PETRI_PLACES=157, PETRI_TRANSITIONS=181} [2024-06-27 20:03:40,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-27 20:03:40,805 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 181 transitions, 1607 flow [2024-06-27 20:03:40,805 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 20:03:40,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:40,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:40,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:03:40,805 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:40,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:40,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1004076792, now seen corresponding path program 5 times [2024-06-27 20:03:40,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:40,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123451369] [2024-06-27 20:03:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:40,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:41,993 INFO 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 20:03:41,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:41,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123451369] [2024-06-27 20:03:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123451369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:41,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:41,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:41,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71402738] [2024-06-27 20:03:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:41,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:41,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:42,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:42,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 181 transitions, 1607 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 20:03:42,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:42,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:42,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:42,899 INFO L124 PetriNetUnfolderBase]: 2149/3401 cut-off events. [2024-06-27 20:03:42,900 INFO L125 PetriNetUnfolderBase]: For 210185/210185 co-relation queries the response was YES. [2024-06-27 20:03:42,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25310 conditions, 3401 events. 2149/3401 cut-off events. For 210185/210185 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18464 event pairs, 521 based on Foata normal form. 16/3414 useless extension candidates. Maximal degree in co-relation 25246. Up to 3045 conditions per place. [2024-06-27 20:03:42,927 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 184 selfloop transitions, 27 changer transitions 0/221 dead transitions. [2024-06-27 20:03:42,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 221 transitions, 2220 flow [2024-06-27 20:03:42,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 20:03:42,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-27 20:03:42,929 INFO L175 Difference]: Start difference. First operand has 157 places, 181 transitions, 1607 flow. Second operand 10 states and 188 transitions. [2024-06-27 20:03:42,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 221 transitions, 2220 flow [2024-06-27 20:03:43,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 221 transitions, 2128 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:03:43,064 INFO L231 Difference]: Finished difference. Result has 158 places, 182 transitions, 1637 flow [2024-06-27 20:03:43,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1637, PETRI_PLACES=158, PETRI_TRANSITIONS=182} [2024-06-27 20:03:43,064 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-27 20:03:43,064 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 182 transitions, 1637 flow [2024-06-27 20:03:43,065 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 20:03:43,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:43,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:43,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:03:43,065 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:43,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1394225620, now seen corresponding path program 1 times [2024-06-27 20:03:43,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:43,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155716766] [2024-06-27 20:03:43,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:43,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155716766] [2024-06-27 20:03:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155716766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:43,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:03:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232411145] [2024-06-27 20:03:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:43,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:03:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:03:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:03:43,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:03:43,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 182 transitions, 1637 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:43,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:43,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:03:43,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:44,316 INFO L124 PetriNetUnfolderBase]: 2252/3510 cut-off events. [2024-06-27 20:03:44,317 INFO L125 PetriNetUnfolderBase]: For 205821/205821 co-relation queries the response was YES. [2024-06-27 20:03:44,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25925 conditions, 3510 events. 2252/3510 cut-off events. For 205821/205821 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18661 event pairs, 557 based on Foata normal form. 2/3509 useless extension candidates. Maximal degree in co-relation 25860. Up to 3360 conditions per place. [2024-06-27 20:03:44,343 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 182 selfloop transitions, 25 changer transitions 0/211 dead transitions. [2024-06-27 20:03:44,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 211 transitions, 2295 flow [2024-06-27 20:03:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:03:44,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:03:44,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 20:03:44,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-27 20:03:44,344 INFO L175 Difference]: Start difference. First operand has 158 places, 182 transitions, 1637 flow. Second operand 7 states and 127 transitions. [2024-06-27 20:03:44,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 211 transitions, 2295 flow [2024-06-27 20:03:44,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 211 transitions, 2222 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:44,526 INFO L231 Difference]: Finished difference. Result has 158 places, 191 transitions, 1720 flow [2024-06-27 20:03:44,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1720, PETRI_PLACES=158, PETRI_TRANSITIONS=191} [2024-06-27 20:03:44,526 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-06-27 20:03:44,526 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 191 transitions, 1720 flow [2024-06-27 20:03:44,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:03:44,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:44,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:44,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:03:44,527 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2043224440, now seen corresponding path program 6 times [2024-06-27 20:03:44,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:44,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892968712] [2024-06-27 20:03:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:45,610 INFO 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 20:03:45,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892968712] [2024-06-27 20:03:45,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892968712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:45,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064717568] [2024-06-27 20:03:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:45,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:45,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 191 transitions, 1720 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 20:03:45,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:45,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:45,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:46,430 INFO L124 PetriNetUnfolderBase]: 2234/3554 cut-off events. [2024-06-27 20:03:46,430 INFO L125 PetriNetUnfolderBase]: For 227279/227285 co-relation queries the response was YES. [2024-06-27 20:03:46,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26636 conditions, 3554 events. 2234/3554 cut-off events. For 227279/227285 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19635 event pairs, 547 based on Foata normal form. 20/3569 useless extension candidates. Maximal degree in co-relation 26569. Up to 3103 conditions per place. [2024-06-27 20:03:46,457 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 170 selfloop transitions, 49 changer transitions 0/229 dead transitions. [2024-06-27 20:03:46,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 229 transitions, 2342 flow [2024-06-27 20:03:46,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 20:03:46,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-27 20:03:46,458 INFO L175 Difference]: Start difference. First operand has 158 places, 191 transitions, 1720 flow. Second operand 10 states and 188 transitions. [2024-06-27 20:03:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 229 transitions, 2342 flow [2024-06-27 20:03:46,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 229 transitions, 2305 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 20:03:46,614 INFO L231 Difference]: Finished difference. Result has 166 places, 193 transitions, 1852 flow [2024-06-27 20:03:46,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1852, PETRI_PLACES=166, PETRI_TRANSITIONS=193} [2024-06-27 20:03:46,614 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-27 20:03:46,614 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 193 transitions, 1852 flow [2024-06-27 20:03:46,615 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 20:03:46,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:46,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:46,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:03:46,615 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:46,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2043433690, now seen corresponding path program 7 times [2024-06-27 20:03:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259105578] [2024-06-27 20:03:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:46,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:47,515 INFO 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 20:03:47,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:47,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259105578] [2024-06-27 20:03:47,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259105578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:47,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:47,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:47,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360532019] [2024-06-27 20:03:47,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:47,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:47,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:47,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 193 transitions, 1852 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 20:03:47,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:47,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:47,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:48,466 INFO L124 PetriNetUnfolderBase]: 2402/3845 cut-off events. [2024-06-27 20:03:48,467 INFO L125 PetriNetUnfolderBase]: For 260243/260246 co-relation queries the response was YES. [2024-06-27 20:03:48,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30046 conditions, 3845 events. 2402/3845 cut-off events. For 260243/260246 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21859 event pairs, 595 based on Foata normal form. 12/3850 useless extension candidates. Maximal degree in co-relation 29976. Up to 3149 conditions per place. [2024-06-27 20:03:48,499 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 162 selfloop transitions, 64 changer transitions 0/236 dead transitions. [2024-06-27 20:03:48,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 236 transitions, 2787 flow [2024-06-27 20:03:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 20:03:48,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47317073170731705 [2024-06-27 20:03:48,502 INFO L175 Difference]: Start difference. First operand has 166 places, 193 transitions, 1852 flow. Second operand 10 states and 194 transitions. [2024-06-27 20:03:48,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 236 transitions, 2787 flow [2024-06-27 20:03:48,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 236 transitions, 2631 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:48,706 INFO L231 Difference]: Finished difference. Result has 169 places, 196 transitions, 2012 flow [2024-06-27 20:03:48,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=169, PETRI_TRANSITIONS=196} [2024-06-27 20:03:48,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 20:03:48,706 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 196 transitions, 2012 flow [2024-06-27 20:03:48,707 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 20:03:48,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:48,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:48,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:03:48,707 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:48,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -506689810, now seen corresponding path program 8 times [2024-06-27 20:03:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:48,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641924763] [2024-06-27 20:03:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:49,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:49,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641924763] [2024-06-27 20:03:49,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641924763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:49,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:49,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:49,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738411829] [2024-06-27 20:03:49,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:49,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:49,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:50,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:50,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 196 transitions, 2012 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 20:03:50,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:50,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:50,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:50,879 INFO L124 PetriNetUnfolderBase]: 2374/3804 cut-off events. [2024-06-27 20:03:50,879 INFO L125 PetriNetUnfolderBase]: For 255208/255214 co-relation queries the response was YES. [2024-06-27 20:03:50,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29032 conditions, 3804 events. 2374/3804 cut-off events. For 255208/255214 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21557 event pairs, 587 based on Foata normal form. 20/3819 useless extension candidates. Maximal degree in co-relation 28960. Up to 3353 conditions per place. [2024-06-27 20:03:50,909 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 168 selfloop transitions, 53 changer transitions 0/231 dead transitions. [2024-06-27 20:03:50,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 231 transitions, 2576 flow [2024-06-27 20:03:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 20:03:50,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-27 20:03:50,912 INFO L175 Difference]: Start difference. First operand has 169 places, 196 transitions, 2012 flow. Second operand 10 states and 189 transitions. [2024-06-27 20:03:50,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 231 transitions, 2576 flow [2024-06-27 20:03:51,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 231 transitions, 2440 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:51,145 INFO L231 Difference]: Finished difference. Result has 173 places, 196 transitions, 1989 flow [2024-06-27 20:03:51,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1989, PETRI_PLACES=173, PETRI_TRANSITIONS=196} [2024-06-27 20:03:51,146 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2024-06-27 20:03:51,146 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 196 transitions, 1989 flow [2024-06-27 20:03:51,146 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 20:03:51,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:51,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:03:51,147 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:51,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -240985090, now seen corresponding path program 9 times [2024-06-27 20:03:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440343125] [2024-06-27 20:03:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:52,130 INFO 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 20:03:52,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:52,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440343125] [2024-06-27 20:03:52,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440343125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:52,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:52,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:52,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536428945] [2024-06-27 20:03:52,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:52,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:52,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:52,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:52,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:52,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:52,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 196 transitions, 1989 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 20:03:52,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:52,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:52,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:52,985 INFO L124 PetriNetUnfolderBase]: 2493/4015 cut-off events. [2024-06-27 20:03:52,985 INFO L125 PetriNetUnfolderBase]: For 272710/272716 co-relation queries the response was YES. [2024-06-27 20:03:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30987 conditions, 4015 events. 2493/4015 cut-off events. For 272710/272716 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 23139 event pairs, 574 based on Foata normal form. 16/4026 useless extension candidates. Maximal degree in co-relation 30913. Up to 2328 conditions per place. [2024-06-27 20:03:53,020 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 130 selfloop transitions, 102 changer transitions 0/242 dead transitions. [2024-06-27 20:03:53,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 242 transitions, 2909 flow [2024-06-27 20:03:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 20:03:53,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-27 20:03:53,024 INFO L175 Difference]: Start difference. First operand has 173 places, 196 transitions, 1989 flow. Second operand 10 states and 195 transitions. [2024-06-27 20:03:53,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 242 transitions, 2909 flow [2024-06-27 20:03:53,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 242 transitions, 2800 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:03:53,304 INFO L231 Difference]: Finished difference. Result has 176 places, 199 transitions, 2264 flow [2024-06-27 20:03:53,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2264, PETRI_PLACES=176, PETRI_TRANSITIONS=199} [2024-06-27 20:03:53,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-27 20:03:53,308 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 199 transitions, 2264 flow [2024-06-27 20:03:53,308 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 20:03:53,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:53,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:03:53,308 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:53,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2050583530, now seen corresponding path program 10 times [2024-06-27 20:03:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:53,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22040457] [2024-06-27 20:03:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:53,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:54,289 INFO 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 20:03:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22040457] [2024-06-27 20:03:54,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22040457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:54,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:54,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:54,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453623464] [2024-06-27 20:03:54,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:54,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:54,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:54,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:54,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 199 transitions, 2264 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 20:03:54,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:54,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:54,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:55,205 INFO L124 PetriNetUnfolderBase]: 2620/4225 cut-off events. [2024-06-27 20:03:55,205 INFO L125 PetriNetUnfolderBase]: For 311200/311203 co-relation queries the response was YES. [2024-06-27 20:03:55,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34301 conditions, 4225 events. 2620/4225 cut-off events. For 311200/311203 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24791 event pairs, 654 based on Foata normal form. 12/4230 useless extension candidates. Maximal degree in co-relation 34225. Up to 3503 conditions per place. [2024-06-27 20:03:55,242 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 136 selfloop transitions, 95 changer transitions 0/241 dead transitions. [2024-06-27 20:03:55,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 241 transitions, 3174 flow [2024-06-27 20:03:55,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:03:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:03:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 20:03:55,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-27 20:03:55,244 INFO L175 Difference]: Start difference. First operand has 176 places, 199 transitions, 2264 flow. Second operand 10 states and 195 transitions. [2024-06-27 20:03:55,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 241 transitions, 3174 flow [2024-06-27 20:03:55,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 241 transitions, 3033 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:55,539 INFO L231 Difference]: Finished difference. Result has 180 places, 201 transitions, 2443 flow [2024-06-27 20:03:55,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2443, PETRI_PLACES=180, PETRI_TRANSITIONS=201} [2024-06-27 20:03:55,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-27 20:03:55,540 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 201 transitions, 2443 flow [2024-06-27 20:03:55,540 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 20:03:55,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:55,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:55,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:03:55,541 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:55,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash -250189300, now seen corresponding path program 11 times [2024-06-27 20:03:55,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:55,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371217747] [2024-06-27 20:03:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:03:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371217747] [2024-06-27 20:03:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371217747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:56,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169476297] [2024-06-27 20:03:56,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:56,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:56,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 201 transitions, 2443 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 20:03:56,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:56,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:56,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:03:57,650 INFO L124 PetriNetUnfolderBase]: 2592/4184 cut-off events. [2024-06-27 20:03:57,650 INFO L125 PetriNetUnfolderBase]: For 307918/307924 co-relation queries the response was YES. [2024-06-27 20:03:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33499 conditions, 4184 events. 2592/4184 cut-off events. For 307918/307924 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24571 event pairs, 641 based on Foata normal form. 20/4199 useless extension candidates. Maximal degree in co-relation 33421. Up to 3514 conditions per place. [2024-06-27 20:03:57,689 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 147 selfloop transitions, 88 changer transitions 0/245 dead transitions. [2024-06-27 20:03:57,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 245 transitions, 3059 flow [2024-06-27 20:03:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:03:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:03:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-27 20:03:57,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-27 20:03:57,690 INFO L175 Difference]: Start difference. First operand has 180 places, 201 transitions, 2443 flow. Second operand 12 states and 225 transitions. [2024-06-27 20:03:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 245 transitions, 3059 flow [2024-06-27 20:03:58,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 245 transitions, 2877 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 20:03:58,021 INFO L231 Difference]: Finished difference. Result has 186 places, 202 transitions, 2456 flow [2024-06-27 20:03:58,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2456, PETRI_PLACES=186, PETRI_TRANSITIONS=202} [2024-06-27 20:03:58,021 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-27 20:03:58,021 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 202 transitions, 2456 flow [2024-06-27 20:03:58,021 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 20:03:58,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:03:58,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:03:58,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:03:58,022 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:03:58,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:03:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1018309132, now seen corresponding path program 12 times [2024-06-27 20:03:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:03:58,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338871645] [2024-06-27 20:03:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:03:58,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:03:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:03:59,086 INFO 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 20:03:59,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:03:59,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338871645] [2024-06-27 20:03:59,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338871645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:03:59,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:03:59,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:03:59,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720776574] [2024-06-27 20:03:59,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:03:59,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:03:59,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:03:59,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:03:59,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:03:59,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:03:59,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 202 transitions, 2456 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 20:03:59,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:03:59,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:03:59,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:00,142 INFO L124 PetriNetUnfolderBase]: 2650/4282 cut-off events. [2024-06-27 20:04:00,142 INFO L125 PetriNetUnfolderBase]: For 316955/316961 co-relation queries the response was YES. [2024-06-27 20:04:00,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34457 conditions, 4282 events. 2650/4282 cut-off events. For 316955/316961 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 25280 event pairs, 661 based on Foata normal form. 20/4297 useless extension candidates. Maximal degree in co-relation 34377. Up to 3812 conditions per place. [2024-06-27 20:04:00,183 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 174 selfloop transitions, 54 changer transitions 0/238 dead transitions. [2024-06-27 20:04:00,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 238 transitions, 3097 flow [2024-06-27 20:04:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-27 20:04:00,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-27 20:04:00,185 INFO L175 Difference]: Start difference. First operand has 186 places, 202 transitions, 2456 flow. Second operand 10 states and 190 transitions. [2024-06-27 20:04:00,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 238 transitions, 3097 flow [2024-06-27 20:04:00,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 238 transitions, 2921 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:04:00,497 INFO L231 Difference]: Finished difference. Result has 185 places, 203 transitions, 2460 flow [2024-06-27 20:04:00,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2460, PETRI_PLACES=185, PETRI_TRANSITIONS=203} [2024-06-27 20:04:00,498 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-27 20:04:00,498 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 203 transitions, 2460 flow [2024-06-27 20:04:00,498 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 20:04:00,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:00,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:00,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:04:00,499 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:00,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:00,499 INFO L85 PathProgramCache]: Analyzing trace with hash -852682032, now seen corresponding path program 13 times [2024-06-27 20:04:00,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:00,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892551065] [2024-06-27 20:04:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:00,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892551065] [2024-06-27 20:04:01,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892551065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:01,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:01,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:01,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983762114] [2024-06-27 20:04:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:01,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:01,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:02,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:02,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 203 transitions, 2460 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 20:04:02,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:02,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:02,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:03,097 INFO L124 PetriNetUnfolderBase]: 2708/4390 cut-off events. [2024-06-27 20:04:03,097 INFO L125 PetriNetUnfolderBase]: For 324737/324743 co-relation queries the response was YES. [2024-06-27 20:04:03,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35249 conditions, 4390 events. 2708/4390 cut-off events. For 324737/324743 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 26150 event pairs, 681 based on Foata normal form. 20/4405 useless extension candidates. Maximal degree in co-relation 35169. Up to 3937 conditions per place. [2024-06-27 20:04:03,132 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 182 selfloop transitions, 47 changer transitions 0/239 dead transitions. [2024-06-27 20:04:03,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 239 transitions, 3105 flow [2024-06-27 20:04:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 20:04:03,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-27 20:04:03,133 INFO L175 Difference]: Start difference. First operand has 185 places, 203 transitions, 2460 flow. Second operand 10 states and 188 transitions. [2024-06-27 20:04:03,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 239 transitions, 3105 flow [2024-06-27 20:04:03,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 239 transitions, 2966 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 20:04:03,438 INFO L231 Difference]: Finished difference. Result has 187 places, 204 transitions, 2489 flow [2024-06-27 20:04:03,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2489, PETRI_PLACES=187, PETRI_TRANSITIONS=204} [2024-06-27 20:04:03,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2024-06-27 20:04:03,438 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 204 transitions, 2489 flow [2024-06-27 20:04:03,438 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 20:04:03,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:03,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:03,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:04:03,439 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:03,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:03,439 INFO L85 PathProgramCache]: Analyzing trace with hash -847110402, now seen corresponding path program 14 times [2024-06-27 20:04:03,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:03,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071129591] [2024-06-27 20:04:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:03,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:04,348 INFO 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 20:04:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071129591] [2024-06-27 20:04:04,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071129591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:04,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:04,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146721658] [2024-06-27 20:04:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:04,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:04,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:04,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:04,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 204 transitions, 2489 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 20:04:04,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:04,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:04,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:05,463 INFO L124 PetriNetUnfolderBase]: 2810/4561 cut-off events. [2024-06-27 20:04:05,463 INFO L125 PetriNetUnfolderBase]: For 350157/350160 co-relation queries the response was YES. [2024-06-27 20:04:05,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37344 conditions, 4561 events. 2810/4561 cut-off events. For 350157/350160 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 27521 event pairs, 707 based on Foata normal form. 12/4566 useless extension candidates. Maximal degree in co-relation 37263. Up to 3744 conditions per place. [2024-06-27 20:04:05,504 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 171 selfloop transitions, 65 changer transitions 0/246 dead transitions. [2024-06-27 20:04:05,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 246 transitions, 3433 flow [2024-06-27 20:04:05,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 20:04:05,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-06-27 20:04:05,505 INFO L175 Difference]: Start difference. First operand has 187 places, 204 transitions, 2489 flow. Second operand 10 states and 195 transitions. [2024-06-27 20:04:05,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 246 transitions, 3433 flow [2024-06-27 20:04:05,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 246 transitions, 3306 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:04:05,858 INFO L231 Difference]: Finished difference. Result has 189 places, 206 transitions, 2634 flow [2024-06-27 20:04:05,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2634, PETRI_PLACES=189, PETRI_TRANSITIONS=206} [2024-06-27 20:04:05,859 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-27 20:04:05,859 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 206 transitions, 2634 flow [2024-06-27 20:04:05,859 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 20:04:05,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:05,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:05,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:04:05,860 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:05,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1018107322, now seen corresponding path program 15 times [2024-06-27 20:04:05,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:05,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086892699] [2024-06-27 20:04:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:05,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:06,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086892699] [2024-06-27 20:04:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086892699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:06,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:06,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:06,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011895005] [2024-06-27 20:04:06,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:06,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:06,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:07,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:07,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 206 transitions, 2634 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 20:04:07,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:07,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:07,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:08,035 INFO L124 PetriNetUnfolderBase]: 2782/4520 cut-off events. [2024-06-27 20:04:08,036 INFO L125 PetriNetUnfolderBase]: For 344572/344575 co-relation queries the response was YES. [2024-06-27 20:04:08,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36246 conditions, 4520 events. 2782/4520 cut-off events. For 344572/344575 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 27174 event pairs, 688 based on Foata normal form. 18/4533 useless extension candidates. Maximal degree in co-relation 36164. Up to 4067 conditions per place. [2024-06-27 20:04:08,073 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 185 selfloop transitions, 48 changer transitions 0/243 dead transitions. [2024-06-27 20:04:08,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 243 transitions, 3239 flow [2024-06-27 20:04:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:04:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:04:08,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 20:04:08,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44567627494456763 [2024-06-27 20:04:08,074 INFO L175 Difference]: Start difference. First operand has 189 places, 206 transitions, 2634 flow. Second operand 11 states and 201 transitions. [2024-06-27 20:04:08,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 243 transitions, 3239 flow [2024-06-27 20:04:08,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 243 transitions, 3091 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 20:04:08,431 INFO L231 Difference]: Finished difference. Result has 195 places, 208 transitions, 2603 flow [2024-06-27 20:04:08,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2603, PETRI_PLACES=195, PETRI_TRANSITIONS=208} [2024-06-27 20:04:08,431 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 153 predicate places. [2024-06-27 20:04:08,431 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 208 transitions, 2603 flow [2024-06-27 20:04:08,431 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 20:04:08,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:08,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:08,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:04:08,432 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:08,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1404414700, now seen corresponding path program 2 times [2024-06-27 20:04:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356668542] [2024-06-27 20:04:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:09,002 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 20:04:09,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356668542] [2024-06-27 20:04:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356668542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:09,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:09,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311625634] [2024-06-27 20:04:09,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:09,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:04:09,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 208 transitions, 2603 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:09,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:09,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:04:09,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:09,909 INFO L124 PetriNetUnfolderBase]: 2885/4625 cut-off events. [2024-06-27 20:04:09,910 INFO L125 PetriNetUnfolderBase]: For 329303/329303 co-relation queries the response was YES. [2024-06-27 20:04:09,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36688 conditions, 4625 events. 2885/4625 cut-off events. For 329303/329303 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 27336 event pairs, 732 based on Foata normal form. 2/4621 useless extension candidates. Maximal degree in co-relation 36603. Up to 4431 conditions per place. [2024-06-27 20:04:09,949 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 192 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-06-27 20:04:09,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 225 transitions, 3255 flow [2024-06-27 20:04:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 20:04:09,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-27 20:04:09,950 INFO L175 Difference]: Start difference. First operand has 195 places, 208 transitions, 2603 flow. Second operand 7 states and 121 transitions. [2024-06-27 20:04:09,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 225 transitions, 3255 flow [2024-06-27 20:04:10,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 225 transitions, 3153 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:04:10,219 INFO L231 Difference]: Finished difference. Result has 194 places, 211 transitions, 2607 flow [2024-06-27 20:04:10,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2501, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2607, PETRI_PLACES=194, PETRI_TRANSITIONS=211} [2024-06-27 20:04:10,219 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-27 20:04:10,219 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 211 transitions, 2607 flow [2024-06-27 20:04:10,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:10,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:10,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:04:10,220 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:10,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1194187810, now seen corresponding path program 3 times [2024-06-27 20:04:10,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272849774] [2024-06-27 20:04:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:10,737 INFO 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 20:04:10,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:10,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272849774] [2024-06-27 20:04:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272849774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:10,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:10,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608460690] [2024-06-27 20:04:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:10,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:10,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:10,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:04:10,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 211 transitions, 2607 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:10,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:10,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:04:10,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:11,645 INFO L124 PetriNetUnfolderBase]: 2879/4617 cut-off events. [2024-06-27 20:04:11,646 INFO L125 PetriNetUnfolderBase]: For 335411/335411 co-relation queries the response was YES. [2024-06-27 20:04:11,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36571 conditions, 4617 events. 2879/4617 cut-off events. For 335411/335411 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27316 event pairs, 732 based on Foata normal form. 2/4613 useless extension candidates. Maximal degree in co-relation 36484. Up to 4426 conditions per place. [2024-06-27 20:04:11,685 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 192 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2024-06-27 20:04:11,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 224 transitions, 3109 flow [2024-06-27 20:04:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 20:04:11,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42160278745644597 [2024-06-27 20:04:11,687 INFO L175 Difference]: Start difference. First operand has 194 places, 211 transitions, 2607 flow. Second operand 7 states and 121 transitions. [2024-06-27 20:04:11,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 224 transitions, 3109 flow [2024-06-27 20:04:12,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 224 transitions, 3007 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 20:04:12,036 INFO L231 Difference]: Finished difference. Result has 197 places, 211 transitions, 2567 flow [2024-06-27 20:04:12,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2505, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2567, PETRI_PLACES=197, PETRI_TRANSITIONS=211} [2024-06-27 20:04:12,036 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-27 20:04:12,036 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 211 transitions, 2567 flow [2024-06-27 20:04:12,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:12,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:12,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:12,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:04:12,037 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1182586582, now seen corresponding path program 1 times [2024-06-27 20:04:12,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:12,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898976475] [2024-06-27 20:04:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:12,678 INFO 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 20:04:12,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:12,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898976475] [2024-06-27 20:04:12,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898976475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:12,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:12,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:12,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705132942] [2024-06-27 20:04:12,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:12,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:12,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:12,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:12,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:12,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:12,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 211 transitions, 2567 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 20:04:12,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:12,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:12,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:13,441 INFO L124 PetriNetUnfolderBase]: 2742/4477 cut-off events. [2024-06-27 20:04:13,441 INFO L125 PetriNetUnfolderBase]: For 302854/302854 co-relation queries the response was YES. [2024-06-27 20:04:13,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34557 conditions, 4477 events. 2742/4477 cut-off events. For 302854/302854 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 27146 event pairs, 650 based on Foata normal form. 1/4468 useless extension candidates. Maximal degree in co-relation 34469. Up to 4265 conditions per place. [2024-06-27 20:04:13,496 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 207 selfloop transitions, 14 changer transitions 0/230 dead transitions. [2024-06-27 20:04:13,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 230 transitions, 3094 flow [2024-06-27 20:04:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 20:04:13,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355400696864111 [2024-06-27 20:04:13,502 INFO L175 Difference]: Start difference. First operand has 197 places, 211 transitions, 2567 flow. Second operand 7 states and 125 transitions. [2024-06-27 20:04:13,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 230 transitions, 3094 flow [2024-06-27 20:04:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 230 transitions, 3039 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 20:04:13,877 INFO L231 Difference]: Finished difference. Result has 199 places, 214 transitions, 2594 flow [2024-06-27 20:04:13,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2594, PETRI_PLACES=199, PETRI_TRANSITIONS=214} [2024-06-27 20:04:13,877 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-27 20:04:13,877 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 214 transitions, 2594 flow [2024-06-27 20:04:13,878 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 20:04:13,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:13,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:04:13,878 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:13,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2031856308, now seen corresponding path program 1 times [2024-06-27 20:04:13,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:13,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321590605] [2024-06-27 20:04:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:14,495 INFO 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 20:04:14,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321590605] [2024-06-27 20:04:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321590605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:14,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:14,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:14,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168967765] [2024-06-27 20:04:14,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:14,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:14,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:14,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:14,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 214 transitions, 2594 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 20:04:14,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:14,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:14,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:15,280 INFO L124 PetriNetUnfolderBase]: 2760/4504 cut-off events. [2024-06-27 20:04:15,280 INFO L125 PetriNetUnfolderBase]: For 314287/314287 co-relation queries the response was YES. [2024-06-27 20:04:15,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35119 conditions, 4504 events. 2760/4504 cut-off events. For 314287/314287 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27223 event pairs, 651 based on Foata normal form. 2/4496 useless extension candidates. Maximal degree in co-relation 35030. Up to 4271 conditions per place. [2024-06-27 20:04:15,327 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 205 selfloop transitions, 25 changer transitions 0/239 dead transitions. [2024-06-27 20:04:15,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 239 transitions, 3283 flow [2024-06-27 20:04:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 20:04:15,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44947735191637633 [2024-06-27 20:04:15,328 INFO L175 Difference]: Start difference. First operand has 199 places, 214 transitions, 2594 flow. Second operand 7 states and 129 transitions. [2024-06-27 20:04:15,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 239 transitions, 3283 flow [2024-06-27 20:04:15,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 239 transitions, 3223 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:04:15,698 INFO L231 Difference]: Finished difference. Result has 202 places, 223 transitions, 2690 flow [2024-06-27 20:04:15,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2690, PETRI_PLACES=202, PETRI_TRANSITIONS=223} [2024-06-27 20:04:15,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-27 20:04:15,699 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 223 transitions, 2690 flow [2024-06-27 20:04:15,699 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 20:04:15,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:15,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:15,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:04:15,700 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:15,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1400207996, now seen corresponding path program 2 times [2024-06-27 20:04:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349311470] [2024-06-27 20:04:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:16,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349311470] [2024-06-27 20:04:16,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349311470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:16,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:16,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:16,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319865445] [2024-06-27 20:04:16,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:16,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:16,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:16,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:16,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:16,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 223 transitions, 2690 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 20:04:16,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:16,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:16,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:17,055 INFO L124 PetriNetUnfolderBase]: 2765/4511 cut-off events. [2024-06-27 20:04:17,055 INFO L125 PetriNetUnfolderBase]: For 322847/322847 co-relation queries the response was YES. [2024-06-27 20:04:17,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35758 conditions, 4511 events. 2765/4511 cut-off events. For 322847/322847 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27320 event pairs, 650 based on Foata normal form. 1/4502 useless extension candidates. Maximal degree in co-relation 35667. Up to 4281 conditions per place. [2024-06-27 20:04:17,102 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 208 selfloop transitions, 26 changer transitions 0/243 dead transitions. [2024-06-27 20:04:17,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 243 transitions, 3407 flow [2024-06-27 20:04:17,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:17,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 20:04:17,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-27 20:04:17,104 INFO L175 Difference]: Start difference. First operand has 202 places, 223 transitions, 2690 flow. Second operand 7 states and 127 transitions. [2024-06-27 20:04:17,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 243 transitions, 3407 flow [2024-06-27 20:04:17,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 243 transitions, 3367 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 20:04:17,527 INFO L231 Difference]: Finished difference. Result has 207 places, 229 transitions, 2814 flow [2024-06-27 20:04:17,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2814, PETRI_PLACES=207, PETRI_TRANSITIONS=229} [2024-06-27 20:04:17,527 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-27 20:04:17,527 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 229 transitions, 2814 flow [2024-06-27 20:04:17,527 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 20:04:17,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:17,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:04:17,528 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:17,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1831487808, now seen corresponding path program 2 times [2024-06-27 20:04:17,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:17,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284421510] [2024-06-27 20:04:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:18,105 INFO 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 20:04:18,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:18,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284421510] [2024-06-27 20:04:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284421510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:18,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:18,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092596660] [2024-06-27 20:04:18,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:18,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:18,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:18,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:18,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:18,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 229 transitions, 2814 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 20:04:18,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:18,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:18,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:18,850 INFO L124 PetriNetUnfolderBase]: 2789/4546 cut-off events. [2024-06-27 20:04:18,850 INFO L125 PetriNetUnfolderBase]: For 336917/336917 co-relation queries the response was YES. [2024-06-27 20:04:18,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36433 conditions, 4546 events. 2789/4546 cut-off events. For 336917/336917 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 27508 event pairs, 649 based on Foata normal form. 2/4538 useless extension candidates. Maximal degree in co-relation 36339. Up to 4323 conditions per place. [2024-06-27 20:04:18,895 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 215 selfloop transitions, 21 changer transitions 0/245 dead transitions. [2024-06-27 20:04:18,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 245 transitions, 3471 flow [2024-06-27 20:04:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 20:04:18,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-27 20:04:18,896 INFO L175 Difference]: Start difference. First operand has 207 places, 229 transitions, 2814 flow. Second operand 7 states and 124 transitions. [2024-06-27 20:04:18,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 245 transitions, 3471 flow [2024-06-27 20:04:19,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 245 transitions, 3409 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 20:04:19,224 INFO L231 Difference]: Finished difference. Result has 211 places, 232 transitions, 2834 flow [2024-06-27 20:04:19,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2834, PETRI_PLACES=211, PETRI_TRANSITIONS=232} [2024-06-27 20:04:19,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-06-27 20:04:19,224 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 232 transitions, 2834 flow [2024-06-27 20:04:19,225 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 20:04:19,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:19,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:04:19,225 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:19,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1194609472, now seen corresponding path program 3 times [2024-06-27 20:04:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722456211] [2024-06-27 20:04:19,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:19,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:19,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722456211] [2024-06-27 20:04:19,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722456211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:19,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:19,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:19,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555331306] [2024-06-27 20:04:19,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:19,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:19,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:19,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:19,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:19,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 232 transitions, 2834 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 20:04:19,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:19,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:19,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:20,483 INFO L124 PetriNetUnfolderBase]: 2774/4524 cut-off events. [2024-06-27 20:04:20,483 INFO L125 PetriNetUnfolderBase]: For 342489/342489 co-relation queries the response was YES. [2024-06-27 20:04:20,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36298 conditions, 4524 events. 2774/4524 cut-off events. For 342489/342489 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27349 event pairs, 648 based on Foata normal form. 3/4517 useless extension candidates. Maximal degree in co-relation 36202. Up to 4314 conditions per place. [2024-06-27 20:04:20,528 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 218 selfloop transitions, 16 changer transitions 0/243 dead transitions. [2024-06-27 20:04:20,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 243 transitions, 3333 flow [2024-06-27 20:04:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:20,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 20:04:20,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181184668989547 [2024-06-27 20:04:20,529 INFO L175 Difference]: Start difference. First operand has 211 places, 232 transitions, 2834 flow. Second operand 7 states and 120 transitions. [2024-06-27 20:04:20,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 243 transitions, 3333 flow [2024-06-27 20:04:20,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 243 transitions, 3247 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 20:04:20,948 INFO L231 Difference]: Finished difference. Result has 213 places, 232 transitions, 2787 flow [2024-06-27 20:04:20,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2787, PETRI_PLACES=213, PETRI_TRANSITIONS=232} [2024-06-27 20:04:20,948 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-27 20:04:20,949 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 232 transitions, 2787 flow [2024-06-27 20:04:20,949 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 20:04:20,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:20,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:04:20,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:04:20,949 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:20,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1189020322, now seen corresponding path program 3 times [2024-06-27 20:04:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093739473] [2024-06-27 20:04:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:20,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:21,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:21,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093739473] [2024-06-27 20:04:21,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093739473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:21,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:21,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:21,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578106651] [2024-06-27 20:04:21,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:21,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:21,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:21,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:21,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:21,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 232 transitions, 2787 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 20:04:21,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:21,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:21,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:22,231 INFO L124 PetriNetUnfolderBase]: 2771/4520 cut-off events. [2024-06-27 20:04:22,232 INFO L125 PetriNetUnfolderBase]: For 345999/345999 co-relation queries the response was YES. [2024-06-27 20:04:22,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36275 conditions, 4520 events. 2771/4520 cut-off events. For 345999/345999 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27405 event pairs, 648 based on Foata normal form. 1/4511 useless extension candidates. Maximal degree in co-relation 36179. Up to 4316 conditions per place. [2024-06-27 20:04:22,281 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 219 selfloop transitions, 14 changer transitions 0/242 dead transitions. [2024-06-27 20:04:22,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 242 transitions, 3280 flow [2024-06-27 20:04:22,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 20:04:22,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:04:22,283 INFO L175 Difference]: Start difference. First operand has 213 places, 232 transitions, 2787 flow. Second operand 7 states and 119 transitions. [2024-06-27 20:04:22,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 242 transitions, 3280 flow [2024-06-27 20:04:22,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 242 transitions, 3206 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 20:04:22,684 INFO L231 Difference]: Finished difference. Result has 214 places, 232 transitions, 2747 flow [2024-06-27 20:04:22,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2747, PETRI_PLACES=214, PETRI_TRANSITIONS=232} [2024-06-27 20:04:22,684 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 172 predicate places. [2024-06-27 20:04:22,684 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 232 transitions, 2747 flow [2024-06-27 20:04:22,685 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 20:04:22,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:22,685 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 20:04:22,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:04:22,685 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:22,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -814360757, now seen corresponding path program 1 times [2024-06-27 20:04:22,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929141636] [2024-06-27 20:04:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:23,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:23,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929141636] [2024-06-27 20:04:23,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929141636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:23,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:23,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682051054] [2024-06-27 20:04:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:23,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:23,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:23,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:23,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 232 transitions, 2747 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 20:04:23,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:23,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:23,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:24,898 INFO L124 PetriNetUnfolderBase]: 2882/4663 cut-off events. [2024-06-27 20:04:24,898 INFO L125 PetriNetUnfolderBase]: For 428388/428388 co-relation queries the response was YES. [2024-06-27 20:04:24,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38985 conditions, 4663 events. 2882/4663 cut-off events. For 428388/428388 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 27926 event pairs, 505 based on Foata normal form. 12/4662 useless extension candidates. Maximal degree in co-relation 38888. Up to 4280 conditions per place. [2024-06-27 20:04:24,943 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 245 selfloop transitions, 19 changer transitions 0/277 dead transitions. [2024-06-27 20:04:24,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 3474 flow [2024-06-27 20:04:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:24,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 20:04:24,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-27 20:04:24,945 INFO L175 Difference]: Start difference. First operand has 214 places, 232 transitions, 2747 flow. Second operand 10 states and 187 transitions. [2024-06-27 20:04:24,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 3474 flow [2024-06-27 20:04:25,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 277 transitions, 3428 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:04:25,401 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 2826 flow [2024-06-27 20:04:25,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=219, PETRI_TRANSITIONS=235} [2024-06-27 20:04:25,402 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-27 20:04:25,402 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 2826 flow [2024-06-27 20:04:25,402 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 20:04:25,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:25,402 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 20:04:25,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:04:25,403 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:25,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1062021093, now seen corresponding path program 2 times [2024-06-27 20:04:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308443210] [2024-06-27 20:04:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:26,779 INFO 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 20:04:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:26,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308443210] [2024-06-27 20:04:26,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308443210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:26,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:26,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181071953] [2024-06-27 20:04:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:26,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:26,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 235 transitions, 2826 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 20:04:26,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:26,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:27,861 INFO L124 PetriNetUnfolderBase]: 2935/4756 cut-off events. [2024-06-27 20:04:27,861 INFO L125 PetriNetUnfolderBase]: For 440790/440790 co-relation queries the response was YES. [2024-06-27 20:04:27,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39933 conditions, 4756 events. 2935/4756 cut-off events. For 440790/440790 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 28796 event pairs, 667 based on Foata normal form. 12/4761 useless extension candidates. Maximal degree in co-relation 39834. Up to 4409 conditions per place. [2024-06-27 20:04:27,907 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 244 selfloop transitions, 21 changer transitions 0/278 dead transitions. [2024-06-27 20:04:27,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 278 transitions, 3545 flow [2024-06-27 20:04:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 20:04:27,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-27 20:04:27,919 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 2826 flow. Second operand 10 states and 187 transitions. [2024-06-27 20:04:27,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 278 transitions, 3545 flow [2024-06-27 20:04:28,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 278 transitions, 3461 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 20:04:28,452 INFO L231 Difference]: Finished difference. Result has 223 places, 238 transitions, 2867 flow [2024-06-27 20:04:28,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2867, PETRI_PLACES=223, PETRI_TRANSITIONS=238} [2024-06-27 20:04:28,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-27 20:04:28,453 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 238 transitions, 2867 flow [2024-06-27 20:04:28,453 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 20:04:28,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:28,453 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 20:04:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:04:28,454 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:28,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash -59188715, now seen corresponding path program 3 times [2024-06-27 20:04:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:28,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274705923] [2024-06-27 20:04:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:29,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:29,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274705923] [2024-06-27 20:04:29,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274705923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:29,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:29,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287515247] [2024-06-27 20:04:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:29,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:29,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:29,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 238 transitions, 2867 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 20:04:29,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:29,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:29,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:30,650 INFO L124 PetriNetUnfolderBase]: 2976/4827 cut-off events. [2024-06-27 20:04:30,651 INFO L125 PetriNetUnfolderBase]: For 459579/459579 co-relation queries the response was YES. [2024-06-27 20:04:30,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40521 conditions, 4827 events. 2976/4827 cut-off events. For 459579/459579 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 29278 event pairs, 672 based on Foata normal form. 12/4832 useless extension candidates. Maximal degree in co-relation 40420. Up to 4439 conditions per place. [2024-06-27 20:04:30,701 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 245 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2024-06-27 20:04:30,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 282 transitions, 3610 flow [2024-06-27 20:04:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 20:04:30,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-27 20:04:30,703 INFO L175 Difference]: Start difference. First operand has 223 places, 238 transitions, 2867 flow. Second operand 10 states and 189 transitions. [2024-06-27 20:04:30,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 282 transitions, 3610 flow [2024-06-27 20:04:31,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 282 transitions, 3531 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 20:04:31,185 INFO L231 Difference]: Finished difference. Result has 227 places, 241 transitions, 2934 flow [2024-06-27 20:04:31,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2934, PETRI_PLACES=227, PETRI_TRANSITIONS=241} [2024-06-27 20:04:31,187 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-27 20:04:31,187 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 241 transitions, 2934 flow [2024-06-27 20:04:31,187 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 20:04:31,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:31,187 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 20:04:31,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:04:31,188 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:31,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -762706291, now seen corresponding path program 4 times [2024-06-27 20:04:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468320207] [2024-06-27 20:04:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468320207] [2024-06-27 20:04:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468320207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:32,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637647379] [2024-06-27 20:04:32,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:32,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:32,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:32,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:32,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:32,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 241 transitions, 2934 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 20:04:32,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:32,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:32,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:33,173 INFO L124 PetriNetUnfolderBase]: 2956/4795 cut-off events. [2024-06-27 20:04:33,174 INFO L125 PetriNetUnfolderBase]: For 452054/452054 co-relation queries the response was YES. [2024-06-27 20:04:33,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39724 conditions, 4795 events. 2956/4795 cut-off events. For 452054/452054 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 29059 event pairs, 668 based on Foata normal form. 12/4800 useless extension candidates. Maximal degree in co-relation 39621. Up to 4436 conditions per place. [2024-06-27 20:04:33,221 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 239 selfloop transitions, 26 changer transitions 0/278 dead transitions. [2024-06-27 20:04:33,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 278 transitions, 3575 flow [2024-06-27 20:04:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:33,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 20:04:33,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45365853658536587 [2024-06-27 20:04:33,222 INFO L175 Difference]: Start difference. First operand has 227 places, 241 transitions, 2934 flow. Second operand 10 states and 186 transitions. [2024-06-27 20:04:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 278 transitions, 3575 flow [2024-06-27 20:04:33,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 278 transitions, 3453 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 20:04:33,677 INFO L231 Difference]: Finished difference. Result has 230 places, 241 transitions, 2870 flow [2024-06-27 20:04:33,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=230, PETRI_TRANSITIONS=241} [2024-06-27 20:04:33,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-27 20:04:33,678 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 241 transitions, 2870 flow [2024-06-27 20:04:33,678 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 20:04:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:33,679 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 20:04:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:04:33,679 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:33,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -933524041, now seen corresponding path program 5 times [2024-06-27 20:04:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:33,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284222358] [2024-06-27 20:04:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:35,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284222358] [2024-06-27 20:04:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284222358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:35,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:35,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732610473] [2024-06-27 20:04:35,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:35,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:35,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 241 transitions, 2870 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 20:04:35,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:35,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:35,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:36,276 INFO L124 PetriNetUnfolderBase]: 3132/5084 cut-off events. [2024-06-27 20:04:36,276 INFO L125 PetriNetUnfolderBase]: For 463716/463719 co-relation queries the response was YES. [2024-06-27 20:04:36,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41233 conditions, 5084 events. 3132/5084 cut-off events. For 463716/463719 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 31059 event pairs, 689 based on Foata normal form. 14/5089 useless extension candidates. Maximal degree in co-relation 41129. Up to 4649 conditions per place. [2024-06-27 20:04:36,331 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 257 selfloop transitions, 35 changer transitions 0/305 dead transitions. [2024-06-27 20:04:36,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 305 transitions, 3945 flow [2024-06-27 20:04:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:04:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:04:36,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 20:04:36,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 20:04:36,332 INFO L175 Difference]: Start difference. First operand has 230 places, 241 transitions, 2870 flow. Second operand 11 states and 198 transitions. [2024-06-27 20:04:36,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 305 transitions, 3945 flow [2024-06-27 20:04:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 305 transitions, 3821 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:04:36,904 INFO L231 Difference]: Finished difference. Result has 237 places, 267 transitions, 3266 flow [2024-06-27 20:04:36,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3266, PETRI_PLACES=237, PETRI_TRANSITIONS=267} [2024-06-27 20:04:36,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-27 20:04:36,905 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 267 transitions, 3266 flow [2024-06-27 20:04:36,905 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 20:04:36,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:36,905 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 20:04:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:04:36,906 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:36,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash 972531319, now seen corresponding path program 6 times [2024-06-27 20:04:36,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:36,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284724087] [2024-06-27 20:04:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:38,089 INFO 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 20:04:38,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:38,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284724087] [2024-06-27 20:04:38,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284724087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:38,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:38,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:38,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450567219] [2024-06-27 20:04:38,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:38,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:38,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:38,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:38,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 267 transitions, 3266 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 20:04:38,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:38,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:38,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:39,323 INFO L124 PetriNetUnfolderBase]: 3286/5335 cut-off events. [2024-06-27 20:04:39,323 INFO L125 PetriNetUnfolderBase]: For 487835/487835 co-relation queries the response was YES. [2024-06-27 20:04:39,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43625 conditions, 5335 events. 3286/5335 cut-off events. For 487835/487835 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 32869 event pairs, 698 based on Foata normal form. 12/5340 useless extension candidates. Maximal degree in co-relation 43516. Up to 4784 conditions per place. [2024-06-27 20:04:39,382 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 266 selfloop transitions, 62 changer transitions 0/341 dead transitions. [2024-06-27 20:04:39,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 341 transitions, 4562 flow [2024-06-27 20:04:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:04:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:04:39,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 20:04:39,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 20:04:39,383 INFO L175 Difference]: Start difference. First operand has 237 places, 267 transitions, 3266 flow. Second operand 11 states and 205 transitions. [2024-06-27 20:04:39,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 341 transitions, 4562 flow [2024-06-27 20:04:40,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 341 transitions, 4415 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 20:04:40,103 INFO L231 Difference]: Finished difference. Result has 250 places, 298 transitions, 3872 flow [2024-06-27 20:04:40,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3872, PETRI_PLACES=250, PETRI_TRANSITIONS=298} [2024-06-27 20:04:40,104 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-27 20:04:40,104 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 298 transitions, 3872 flow [2024-06-27 20:04:40,104 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 20:04:40,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:40,105 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 20:04:40,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:04:40,105 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:40,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash 262143573, now seen corresponding path program 1 times [2024-06-27 20:04:40,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:40,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623983043] [2024-06-27 20:04:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:40,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:40,719 INFO 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 20:04:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623983043] [2024-06-27 20:04:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623983043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:40,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735741857] [2024-06-27 20:04:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:40,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:40,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:04:40,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 298 transitions, 3872 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:40,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:40,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:04:40,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:41,880 INFO L124 PetriNetUnfolderBase]: 3391/5454 cut-off events. [2024-06-27 20:04:41,881 INFO L125 PetriNetUnfolderBase]: For 481870/481870 co-relation queries the response was YES. [2024-06-27 20:04:41,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44925 conditions, 5454 events. 3391/5454 cut-off events. For 481870/481870 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 33260 event pairs, 762 based on Foata normal form. 2/5453 useless extension candidates. Maximal degree in co-relation 44809. Up to 5206 conditions per place. [2024-06-27 20:04:41,945 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 288 selfloop transitions, 37 changer transitions 0/329 dead transitions. [2024-06-27 20:04:41,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 329 transitions, 4879 flow [2024-06-27 20:04:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 20:04:41,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-27 20:04:41,947 INFO L175 Difference]: Start difference. First operand has 250 places, 298 transitions, 3872 flow. Second operand 7 states and 128 transitions. [2024-06-27 20:04:41,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 329 transitions, 4879 flow [2024-06-27 20:04:42,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 329 transitions, 4725 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 20:04:42,767 INFO L231 Difference]: Finished difference. Result has 253 places, 309 transitions, 3983 flow [2024-06-27 20:04:42,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3983, PETRI_PLACES=253, PETRI_TRANSITIONS=309} [2024-06-27 20:04:42,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-27 20:04:42,768 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 309 transitions, 3983 flow [2024-06-27 20:04:42,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:42,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:42,768 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 20:04:42,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:04:42,769 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:42,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:42,769 INFO L85 PathProgramCache]: Analyzing trace with hash 271314659, now seen corresponding path program 2 times [2024-06-27 20:04:42,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:42,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890684230] [2024-06-27 20:04:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:42,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:43,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890684230] [2024-06-27 20:04:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890684230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149592720] [2024-06-27 20:04:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:43,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:43,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:04:43,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 309 transitions, 3983 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:43,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:43,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:04:43,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:44,457 INFO L124 PetriNetUnfolderBase]: 3401/5470 cut-off events. [2024-06-27 20:04:44,457 INFO L125 PetriNetUnfolderBase]: For 492699/492699 co-relation queries the response was YES. [2024-06-27 20:04:44,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45391 conditions, 5470 events. 3401/5470 cut-off events. For 492699/492699 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33403 event pairs, 762 based on Foata normal form. 2/5469 useless extension candidates. Maximal degree in co-relation 45273. Up to 5287 conditions per place. [2024-06-27 20:04:44,511 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 297 selfloop transitions, 27 changer transitions 0/328 dead transitions. [2024-06-27 20:04:44,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 328 transitions, 4760 flow [2024-06-27 20:04:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 20:04:44,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250871080139373 [2024-06-27 20:04:44,513 INFO L175 Difference]: Start difference. First operand has 253 places, 309 transitions, 3983 flow. Second operand 7 states and 122 transitions. [2024-06-27 20:04:44,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 328 transitions, 4760 flow [2024-06-27 20:04:45,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 328 transitions, 4635 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-27 20:04:45,243 INFO L231 Difference]: Finished difference. Result has 258 places, 313 transitions, 3999 flow [2024-06-27 20:04:45,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3892, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3999, PETRI_PLACES=258, PETRI_TRANSITIONS=313} [2024-06-27 20:04:45,244 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-27 20:04:45,244 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 313 transitions, 3999 flow [2024-06-27 20:04:45,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:45,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:45,245 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 20:04:45,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:04:45,245 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:45,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2030190467, now seen corresponding path program 1 times [2024-06-27 20:04:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:45,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125729960] [2024-06-27 20:04:45,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:45,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:45,920 INFO 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 20:04:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125729960] [2024-06-27 20:04:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125729960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:45,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:45,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:04:45,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111768513] [2024-06-27 20:04:45,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:45,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:04:45,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:45,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:04:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:04:45,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:04:45,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 313 transitions, 3999 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:45,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:45,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:04:45,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:47,296 INFO L124 PetriNetUnfolderBase]: 3421/5504 cut-off events. [2024-06-27 20:04:47,296 INFO L125 PetriNetUnfolderBase]: For 509044/509044 co-relation queries the response was YES. [2024-06-27 20:04:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45663 conditions, 5504 events. 3421/5504 cut-off events. For 509044/509044 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 33628 event pairs, 763 based on Foata normal form. 4/5505 useless extension candidates. Maximal degree in co-relation 45543. Up to 5210 conditions per place. [2024-06-27 20:04:47,352 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 293 selfloop transitions, 44 changer transitions 0/341 dead transitions. [2024-06-27 20:04:47,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 341 transitions, 4999 flow [2024-06-27 20:04:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:04:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:04:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 20:04:47,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-27 20:04:47,354 INFO L175 Difference]: Start difference. First operand has 258 places, 313 transitions, 3999 flow. Second operand 8 states and 146 transitions. [2024-06-27 20:04:47,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 341 transitions, 4999 flow [2024-06-27 20:04:48,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 341 transitions, 4931 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 20:04:48,105 INFO L231 Difference]: Finished difference. Result has 262 places, 319 transitions, 4123 flow [2024-06-27 20:04:48,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4123, PETRI_PLACES=262, PETRI_TRANSITIONS=319} [2024-06-27 20:04:48,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2024-06-27 20:04:48,105 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 319 transitions, 4123 flow [2024-06-27 20:04:48,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:48,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:48,106 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 20:04:48,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:04:48,106 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:48,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1496372877, now seen corresponding path program 7 times [2024-06-27 20:04:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:48,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57871462] [2024-06-27 20:04:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:49,102 INFO 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 20:04:49,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:49,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57871462] [2024-06-27 20:04:49,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57871462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:49,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:49,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:49,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878268357] [2024-06-27 20:04:49,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:49,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:49,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:49,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:49,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:49,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 319 transitions, 4123 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 20:04:49,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:49,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:49,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:50,293 INFO L124 PetriNetUnfolderBase]: 3400/5520 cut-off events. [2024-06-27 20:04:50,294 INFO L125 PetriNetUnfolderBase]: For 543483/543486 co-relation queries the response was YES. [2024-06-27 20:04:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46613 conditions, 5520 events. 3400/5520 cut-off events. For 543483/543486 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 34278 event pairs, 742 based on Foata normal form. 14/5527 useless extension candidates. Maximal degree in co-relation 46492. Up to 4965 conditions per place. [2024-06-27 20:04:50,361 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 264 selfloop transitions, 74 changer transitions 0/356 dead transitions. [2024-06-27 20:04:50,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 356 transitions, 4997 flow [2024-06-27 20:04:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 20:04:50,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-27 20:04:50,363 INFO L175 Difference]: Start difference. First operand has 262 places, 319 transitions, 4123 flow. Second operand 10 states and 188 transitions. [2024-06-27 20:04:50,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 356 transitions, 4997 flow [2024-06-27 20:04:51,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 356 transitions, 4926 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 20:04:51,148 INFO L231 Difference]: Finished difference. Result has 269 places, 322 transitions, 4299 flow [2024-06-27 20:04:51,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4299, PETRI_PLACES=269, PETRI_TRANSITIONS=322} [2024-06-27 20:04:51,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-27 20:04:51,149 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 322 transitions, 4299 flow [2024-06-27 20:04:51,149 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 20:04:51,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:51,149 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 20:04:51,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:04:51,150 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:51,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1330139097, now seen corresponding path program 8 times [2024-06-27 20:04:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:51,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303868115] [2024-06-27 20:04:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:52,463 INFO 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 20:04:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303868115] [2024-06-27 20:04:52,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303868115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:52,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:52,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259589538] [2024-06-27 20:04:52,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:52,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:52,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:52,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:52,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:52,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 322 transitions, 4299 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 20:04:52,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:52,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:52,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:53,827 INFO L124 PetriNetUnfolderBase]: 3380/5487 cut-off events. [2024-06-27 20:04:53,827 INFO L125 PetriNetUnfolderBase]: For 537566/537569 co-relation queries the response was YES. [2024-06-27 20:04:53,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45983 conditions, 5487 events. 3380/5487 cut-off events. For 537566/537569 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34011 event pairs, 719 based on Foata normal form. 14/5493 useless extension candidates. Maximal degree in co-relation 45859. Up to 4933 conditions per place. [2024-06-27 20:04:53,898 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 264 selfloop transitions, 75 changer transitions 0/357 dead transitions. [2024-06-27 20:04:53,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 357 transitions, 5099 flow [2024-06-27 20:04:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 20:04:53,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-27 20:04:53,900 INFO L175 Difference]: Start difference. First operand has 269 places, 322 transitions, 4299 flow. Second operand 10 states and 187 transitions. [2024-06-27 20:04:53,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 357 transitions, 5099 flow [2024-06-27 20:04:54,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 357 transitions, 4892 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 20:04:54,709 INFO L231 Difference]: Finished difference. Result has 273 places, 323 transitions, 4261 flow [2024-06-27 20:04:54,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4261, PETRI_PLACES=273, PETRI_TRANSITIONS=323} [2024-06-27 20:04:54,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 231 predicate places. [2024-06-27 20:04:54,710 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 323 transitions, 4261 flow [2024-06-27 20:04:54,710 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 20:04:54,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:54,710 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 20:04:54,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:04:54,711 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:54,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:54,711 INFO L85 PathProgramCache]: Analyzing trace with hash -699829937, now seen corresponding path program 9 times [2024-06-27 20:04:54,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:54,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215263145] [2024-06-27 20:04:54,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:54,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:04:56,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:56,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215263145] [2024-06-27 20:04:56,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215263145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:56,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:56,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:04:56,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949529624] [2024-06-27 20:04:56,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:56,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:04:56,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:04:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:04:56,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:04:56,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 323 transitions, 4261 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 20:04:56,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:56,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:04:56,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:57,347 INFO L124 PetriNetUnfolderBase]: 3360/5455 cut-off events. [2024-06-27 20:04:57,347 INFO L125 PetriNetUnfolderBase]: For 522056/522059 co-relation queries the response was YES. [2024-06-27 20:04:57,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44811 conditions, 5455 events. 3360/5455 cut-off events. For 522056/522059 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 33802 event pairs, 685 based on Foata normal form. 14/5461 useless extension candidates. Maximal degree in co-relation 44685. Up to 4824 conditions per place. [2024-06-27 20:04:57,405 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 259 selfloop transitions, 82 changer transitions 0/359 dead transitions. [2024-06-27 20:04:57,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 359 transitions, 4981 flow [2024-06-27 20:04:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:04:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:04:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 20:04:57,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-27 20:04:57,407 INFO L175 Difference]: Start difference. First operand has 273 places, 323 transitions, 4261 flow. Second operand 10 states and 187 transitions. [2024-06-27 20:04:57,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 359 transitions, 4981 flow [2024-06-27 20:04:58,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 359 transitions, 4524 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 20:04:58,137 INFO L231 Difference]: Finished difference. Result has 272 places, 324 transitions, 3908 flow [2024-06-27 20:04:58,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3908, PETRI_PLACES=272, PETRI_TRANSITIONS=324} [2024-06-27 20:04:58,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-27 20:04:58,138 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 324 transitions, 3908 flow [2024-06-27 20:04:58,138 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 20:04:58,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:04:58,138 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 20:04:58,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:04:58,138 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:04:58,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:04:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1458253397, now seen corresponding path program 3 times [2024-06-27 20:04:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:04:58,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17494677] [2024-06-27 20:04:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:04:58,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:04:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:04:58,758 INFO 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 20:04:58,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:04:58,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17494677] [2024-06-27 20:04:58,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17494677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:04:58,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:04:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:04:58,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750258282] [2024-06-27 20:04:58,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:04:58,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:04:58,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:04:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:04:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:04:58,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:04:58,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 324 transitions, 3908 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:04:58,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:04:58,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:04:58,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:04:59,893 INFO L124 PetriNetUnfolderBase]: 3457/5561 cut-off events. [2024-06-27 20:04:59,893 INFO L125 PetriNetUnfolderBase]: For 514033/514036 co-relation queries the response was YES. [2024-06-27 20:04:59,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44751 conditions, 5561 events. 3457/5561 cut-off events. For 514033/514036 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34055 event pairs, 750 based on Foata normal form. 4/5557 useless extension candidates. Maximal degree in co-relation 44626. Up to 5251 conditions per place. [2024-06-27 20:04:59,958 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 295 selfloop transitions, 51 changer transitions 0/350 dead transitions. [2024-06-27 20:04:59,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 350 transitions, 5106 flow [2024-06-27 20:04:59,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:04:59,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:04:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 20:04:59,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-27 20:04:59,959 INFO L175 Difference]: Start difference. First operand has 272 places, 324 transitions, 3908 flow. Second operand 7 states and 128 transitions. [2024-06-27 20:04:59,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 350 transitions, 5106 flow [2024-06-27 20:05:00,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 350 transitions, 4707 flow, removed 40 selfloop flow, removed 11 redundant places. [2024-06-27 20:05:00,719 INFO L231 Difference]: Finished difference. Result has 268 places, 330 transitions, 3752 flow [2024-06-27 20:05:00,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3509, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3752, PETRI_PLACES=268, PETRI_TRANSITIONS=330} [2024-06-27 20:05:00,720 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-27 20:05:00,720 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 330 transitions, 3752 flow [2024-06-27 20:05:00,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:00,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:00,720 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 20:05:00,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:05:00,721 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:00,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:00,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1469681237, now seen corresponding path program 4 times [2024-06-27 20:05:00,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:00,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646017231] [2024-06-27 20:05:00,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:00,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:01,402 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 20:05:01,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:01,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646017231] [2024-06-27 20:05:01,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646017231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:01,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:05:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620737493] [2024-06-27 20:05:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:01,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:05:01,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:05:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:05:01,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:01,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 330 transitions, 3752 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:01,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:01,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:01,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:02,466 INFO L124 PetriNetUnfolderBase]: 3467/5577 cut-off events. [2024-06-27 20:05:02,466 INFO L125 PetriNetUnfolderBase]: For 524016/524019 co-relation queries the response was YES. [2024-06-27 20:05:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44200 conditions, 5577 events. 3467/5577 cut-off events. For 524016/524019 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 34167 event pairs, 755 based on Foata normal form. 4/5573 useless extension candidates. Maximal degree in co-relation 44078. Up to 5261 conditions per place. [2024-06-27 20:05:02,533 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 286 selfloop transitions, 59 changer transitions 0/349 dead transitions. [2024-06-27 20:05:02,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 349 transitions, 4736 flow [2024-06-27 20:05:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:05:02,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:05:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 20:05:02,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205574912891986 [2024-06-27 20:05:02,534 INFO L175 Difference]: Start difference. First operand has 268 places, 330 transitions, 3752 flow. Second operand 7 states and 124 transitions. [2024-06-27 20:05:02,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 349 transitions, 4736 flow [2024-06-27 20:05:03,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 349 transitions, 4560 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 20:05:03,339 INFO L231 Difference]: Finished difference. Result has 272 places, 333 transitions, 3770 flow [2024-06-27 20:05:03,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3770, PETRI_PLACES=272, PETRI_TRANSITIONS=333} [2024-06-27 20:05:03,339 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-27 20:05:03,340 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 333 transitions, 3770 flow [2024-06-27 20:05:03,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:03,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:03,340 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 20:05:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:05:03,340 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:03,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash -947273673, now seen corresponding path program 5 times [2024-06-27 20:05:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810218674] [2024-06-27 20:05:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:03,920 INFO 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 20:05:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810218674] [2024-06-27 20:05:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810218674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:03,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:03,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:05:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826738155] [2024-06-27 20:05:03,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:03,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:05:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:05:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:05:04,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:04,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 333 transitions, 3770 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:04,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:04,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:04,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:04,998 INFO L124 PetriNetUnfolderBase]: 3461/5569 cut-off events. [2024-06-27 20:05:04,999 INFO L125 PetriNetUnfolderBase]: For 529374/529377 co-relation queries the response was YES. [2024-06-27 20:05:05,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44043 conditions, 5569 events. 3461/5569 cut-off events. For 529374/529377 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 34116 event pairs, 751 based on Foata normal form. 4/5565 useless extension candidates. Maximal degree in co-relation 43919. Up to 5380 conditions per place. [2024-06-27 20:05:05,064 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 313 selfloop transitions, 26 changer transitions 0/343 dead transitions. [2024-06-27 20:05:05,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 343 transitions, 4486 flow [2024-06-27 20:05:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:05:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:05:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 20:05:05,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40069686411149824 [2024-06-27 20:05:05,065 INFO L175 Difference]: Start difference. First operand has 272 places, 333 transitions, 3770 flow. Second operand 7 states and 115 transitions. [2024-06-27 20:05:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 343 transitions, 4486 flow [2024-06-27 20:05:05,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 343 transitions, 4368 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 20:05:05,942 INFO L231 Difference]: Finished difference. Result has 275 places, 333 transitions, 3710 flow [2024-06-27 20:05:05,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3652, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3710, PETRI_PLACES=275, PETRI_TRANSITIONS=333} [2024-06-27 20:05:05,943 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-27 20:05:05,943 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 333 transitions, 3710 flow [2024-06-27 20:05:05,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:05,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:05,943 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 20:05:05,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:05:05,944 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:05,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1629176235, now seen corresponding path program 6 times [2024-06-27 20:05:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335202195] [2024-06-27 20:05:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:06,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:06,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335202195] [2024-06-27 20:05:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335202195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:06,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:05:06,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654434915] [2024-06-27 20:05:06,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:05:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:05:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:05:06,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:06,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 333 transitions, 3710 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:06,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:06,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:07,658 INFO L124 PetriNetUnfolderBase]: 3455/5561 cut-off events. [2024-06-27 20:05:07,659 INFO L125 PetriNetUnfolderBase]: For 536430/536433 co-relation queries the response was YES. [2024-06-27 20:05:07,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43872 conditions, 5561 events. 3455/5561 cut-off events. For 536430/536433 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 34079 event pairs, 750 based on Foata normal form. 4/5557 useless extension candidates. Maximal degree in co-relation 43747. Up to 5357 conditions per place. [2024-06-27 20:05:07,719 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 306 selfloop transitions, 34 changer transitions 0/344 dead transitions. [2024-06-27 20:05:07,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 344 transitions, 4442 flow [2024-06-27 20:05:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:05:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:05:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 20:05:07,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076655052264808 [2024-06-27 20:05:07,721 INFO L175 Difference]: Start difference. First operand has 275 places, 333 transitions, 3710 flow. Second operand 7 states and 117 transitions. [2024-06-27 20:05:07,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 344 transitions, 4442 flow [2024-06-27 20:05:08,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 344 transitions, 4330 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:08,580 INFO L231 Difference]: Finished difference. Result has 276 places, 333 transitions, 3672 flow [2024-06-27 20:05:08,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3598, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3672, PETRI_PLACES=276, PETRI_TRANSITIONS=333} [2024-06-27 20:05:08,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-27 20:05:08,581 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 333 transitions, 3672 flow [2024-06-27 20:05:08,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:08,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:08,581 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 20:05:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:05:08,582 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:08,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1634882219, now seen corresponding path program 2 times [2024-06-27 20:05:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:08,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121119926] [2024-06-27 20:05:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:09,180 INFO 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 20:05:09,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:09,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121119926] [2024-06-27 20:05:09,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121119926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:09,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:09,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763736263] [2024-06-27 20:05:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:09,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:09,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:09,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:09,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 333 transitions, 3672 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:09,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:09,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:09,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:10,445 INFO L124 PetriNetUnfolderBase]: 3475/5591 cut-off events. [2024-06-27 20:05:10,445 INFO L125 PetriNetUnfolderBase]: For 554668/554668 co-relation queries the response was YES. [2024-06-27 20:05:10,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44217 conditions, 5591 events. 3475/5591 cut-off events. For 554668/554668 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 34281 event pairs, 756 based on Foata normal form. 4/5586 useless extension candidates. Maximal degree in co-relation 44091. Up to 5283 conditions per place. [2024-06-27 20:05:10,511 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 305 selfloop transitions, 46 changer transitions 0/355 dead transitions. [2024-06-27 20:05:10,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 355 transitions, 4676 flow [2024-06-27 20:05:10,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:05:10,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:05:10,513 INFO L175 Difference]: Start difference. First operand has 276 places, 333 transitions, 3672 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:05:10,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 355 transitions, 4676 flow [2024-06-27 20:05:11,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 355 transitions, 4546 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:05:11,528 INFO L231 Difference]: Finished difference. Result has 277 places, 336 transitions, 3690 flow [2024-06-27 20:05:11,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3690, PETRI_PLACES=277, PETRI_TRANSITIONS=336} [2024-06-27 20:05:11,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-27 20:05:11,529 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 336 transitions, 3690 flow [2024-06-27 20:05:11,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:11,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:11,529 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 20:05:11,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:05:11,529 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:11,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1621549739, now seen corresponding path program 3 times [2024-06-27 20:05:11,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:11,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861056298] [2024-06-27 20:05:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:11,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:12,146 INFO 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 20:05:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:12,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861056298] [2024-06-27 20:05:12,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861056298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:12,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:12,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427506871] [2024-06-27 20:05:12,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:12,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:12,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:12,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:12,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:12,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:12,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 336 transitions, 3690 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:12,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:12,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:12,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:13,319 INFO L124 PetriNetUnfolderBase]: 3495/5619 cut-off events. [2024-06-27 20:05:13,319 INFO L125 PetriNetUnfolderBase]: For 568334/568334 co-relation queries the response was YES. [2024-06-27 20:05:13,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44567 conditions, 5619 events. 3495/5619 cut-off events. For 568334/568334 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 34439 event pairs, 865 based on Foata normal form. 4/5620 useless extension candidates. Maximal degree in co-relation 44441. Up to 5441 conditions per place. [2024-06-27 20:05:13,388 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 327 selfloop transitions, 20 changer transitions 0/351 dead transitions. [2024-06-27 20:05:13,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 351 transitions, 4484 flow [2024-06-27 20:05:13,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 20:05:13,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902439024390244 [2024-06-27 20:05:13,389 INFO L175 Difference]: Start difference. First operand has 277 places, 336 transitions, 3690 flow. Second operand 8 states and 128 transitions. [2024-06-27 20:05:13,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 351 transitions, 4484 flow [2024-06-27 20:05:14,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 351 transitions, 4334 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:14,424 INFO L231 Difference]: Finished difference. Result has 279 places, 339 transitions, 3649 flow [2024-06-27 20:05:14,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3548, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3649, PETRI_PLACES=279, PETRI_TRANSITIONS=339} [2024-06-27 20:05:14,425 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-27 20:05:14,425 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 339 transitions, 3649 flow [2024-06-27 20:05:14,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:14,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:14,426 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 20:05:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:05:14,426 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1634507429, now seen corresponding path program 4 times [2024-06-27 20:05:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:14,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993345446] [2024-06-27 20:05:14,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:14,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:15,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:15,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993345446] [2024-06-27 20:05:15,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993345446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:15,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:15,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517253560] [2024-06-27 20:05:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:15,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:15,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 339 transitions, 3649 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:15,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:15,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:15,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:16,279 INFO L124 PetriNetUnfolderBase]: 3483/5603 cut-off events. [2024-06-27 20:05:16,279 INFO L125 PetriNetUnfolderBase]: For 568675/568675 co-relation queries the response was YES. [2024-06-27 20:05:16,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44117 conditions, 5603 events. 3483/5603 cut-off events. For 568675/568675 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34325 event pairs, 754 based on Foata normal form. 4/5598 useless extension candidates. Maximal degree in co-relation 43990. Up to 5291 conditions per place. [2024-06-27 20:05:16,351 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 301 selfloop transitions, 51 changer transitions 0/356 dead transitions. [2024-06-27 20:05:16,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 356 transitions, 4437 flow [2024-06-27 20:05:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 20:05:16,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42073170731707316 [2024-06-27 20:05:16,352 INFO L175 Difference]: Start difference. First operand has 279 places, 339 transitions, 3649 flow. Second operand 8 states and 138 transitions. [2024-06-27 20:05:16,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 356 transitions, 4437 flow [2024-06-27 20:05:17,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 356 transitions, 4290 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 20:05:17,292 INFO L231 Difference]: Finished difference. Result has 278 places, 339 transitions, 3610 flow [2024-06-27 20:05:17,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3502, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3610, PETRI_PLACES=278, PETRI_TRANSITIONS=339} [2024-06-27 20:05:17,292 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-27 20:05:17,292 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 339 transitions, 3610 flow [2024-06-27 20:05:17,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:17,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:17,293 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 20:05:17,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:05:17,293 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:17,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1994524193, now seen corresponding path program 1 times [2024-06-27 20:05:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121813761] [2024-06-27 20:05:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:18,090 INFO 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 20:05:18,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121813761] [2024-06-27 20:05:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121813761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:18,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:18,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880988359] [2024-06-27 20:05:18,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:18,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:18,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 339 transitions, 3610 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 20:05:18,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:18,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:18,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:19,259 INFO L124 PetriNetUnfolderBase]: 3324/5430 cut-off events. [2024-06-27 20:05:19,259 INFO L125 PetriNetUnfolderBase]: For 487525/487525 co-relation queries the response was YES. [2024-06-27 20:05:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41144 conditions, 5430 events. 3324/5430 cut-off events. For 487525/487525 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 34096 event pairs, 798 based on Foata normal form. 1/5417 useless extension candidates. Maximal degree in co-relation 41018. Up to 5173 conditions per place. [2024-06-27 20:05:19,318 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 332 selfloop transitions, 21 changer transitions 0/362 dead transitions. [2024-06-27 20:05:19,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 362 transitions, 4430 flow [2024-06-27 20:05:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:05:19,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:05:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 20:05:19,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-27 20:05:19,320 INFO L175 Difference]: Start difference. First operand has 278 places, 339 transitions, 3610 flow. Second operand 9 states and 155 transitions. [2024-06-27 20:05:19,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 362 transitions, 4430 flow [2024-06-27 20:05:19,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 362 transitions, 4299 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:05:19,995 INFO L231 Difference]: Finished difference. Result has 280 places, 342 transitions, 3590 flow [2024-06-27 20:05:19,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3590, PETRI_PLACES=280, PETRI_TRANSITIONS=342} [2024-06-27 20:05:19,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-27 20:05:19,996 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 342 transitions, 3590 flow [2024-06-27 20:05:19,996 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 20:05:19,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:19,996 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 20:05:19,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:05:19,997 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:19,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:19,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1465970258, now seen corresponding path program 1 times [2024-06-27 20:05:19,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:19,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870402148] [2024-06-27 20:05:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:19,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:20,592 INFO 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 20:05:20,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:20,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870402148] [2024-06-27 20:05:20,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870402148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:20,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:20,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669971863] [2024-06-27 20:05:20,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:20,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:20,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:20,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:20,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 342 transitions, 3590 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 20:05:20,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:20,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:20,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:21,647 INFO L124 PetriNetUnfolderBase]: 3334/5448 cut-off events. [2024-06-27 20:05:21,647 INFO L125 PetriNetUnfolderBase]: For 502505/502505 co-relation queries the response was YES. [2024-06-27 20:05:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41685 conditions, 5448 events. 3334/5448 cut-off events. For 502505/502505 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34217 event pairs, 799 based on Foata normal form. 2/5432 useless extension candidates. Maximal degree in co-relation 41558. Up to 5195 conditions per place. [2024-06-27 20:05:21,712 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 335 selfloop transitions, 18 changer transitions 0/362 dead transitions. [2024-06-27 20:05:21,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 362 transitions, 4400 flow [2024-06-27 20:05:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:05:21,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-27 20:05:21,714 INFO L175 Difference]: Start difference. First operand has 280 places, 342 transitions, 3590 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:05:21,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 362 transitions, 4400 flow [2024-06-27 20:05:22,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 362 transitions, 4281 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 20:05:22,576 INFO L231 Difference]: Finished difference. Result has 280 places, 345 transitions, 3573 flow [2024-06-27 20:05:22,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3471, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3573, PETRI_PLACES=280, PETRI_TRANSITIONS=345} [2024-06-27 20:05:22,577 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-27 20:05:22,577 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 345 transitions, 3573 flow [2024-06-27 20:05:22,578 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 20:05:22,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:22,578 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 20:05:22,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:05:22,578 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:22,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:22,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1469689328, now seen corresponding path program 2 times [2024-06-27 20:05:22,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:22,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521060125] [2024-06-27 20:05:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:23,180 INFO 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 20:05:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:23,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521060125] [2024-06-27 20:05:23,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521060125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:23,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:23,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:23,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881164804] [2024-06-27 20:05:23,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:23,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:23,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:23,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 345 transitions, 3573 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 20:05:23,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:23,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:23,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:24,184 INFO L124 PetriNetUnfolderBase]: 3392/5537 cut-off events. [2024-06-27 20:05:24,184 INFO L125 PetriNetUnfolderBase]: For 524172/524172 co-relation queries the response was YES. [2024-06-27 20:05:24,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42587 conditions, 5537 events. 3392/5537 cut-off events. For 524172/524172 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34785 event pairs, 808 based on Foata normal form. 2/5521 useless extension candidates. Maximal degree in co-relation 42460. Up to 5203 conditions per place. [2024-06-27 20:05:24,253 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 318 selfloop transitions, 46 changer transitions 0/373 dead transitions. [2024-06-27 20:05:24,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 373 transitions, 4861 flow [2024-06-27 20:05:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 20:05:24,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-27 20:05:24,256 INFO L175 Difference]: Start difference. First operand has 280 places, 345 transitions, 3573 flow. Second operand 8 states and 149 transitions. [2024-06-27 20:05:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 373 transitions, 4861 flow [2024-06-27 20:05:25,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 373 transitions, 4781 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:25,203 INFO L231 Difference]: Finished difference. Result has 282 places, 354 transitions, 3777 flow [2024-06-27 20:05:25,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3777, PETRI_PLACES=282, PETRI_TRANSITIONS=354} [2024-06-27 20:05:25,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2024-06-27 20:05:25,204 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 354 transitions, 3777 flow [2024-06-27 20:05:25,204 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 20:05:25,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:25,204 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 20:05:25,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:05:25,205 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:25,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -456773767, now seen corresponding path program 2 times [2024-06-27 20:05:25,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:25,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79262073] [2024-06-27 20:05:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:25,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:25,970 INFO 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 20:05:25,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79262073] [2024-06-27 20:05:25,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79262073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:25,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723148287] [2024-06-27 20:05:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:25,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:25,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:26,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:26,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 354 transitions, 3777 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 20:05:26,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:26,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:26,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:27,144 INFO L124 PetriNetUnfolderBase]: 3373/5504 cut-off events. [2024-06-27 20:05:27,145 INFO L125 PetriNetUnfolderBase]: For 529479/529479 co-relation queries the response was YES. [2024-06-27 20:05:27,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42634 conditions, 5504 events. 3373/5504 cut-off events. For 529479/529479 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 34586 event pairs, 804 based on Foata normal form. 1/5487 useless extension candidates. Maximal degree in co-relation 42506. Up to 5237 conditions per place. [2024-06-27 20:05:27,211 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 331 selfloop transitions, 30 changer transitions 0/370 dead transitions. [2024-06-27 20:05:27,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 370 transitions, 4599 flow [2024-06-27 20:05:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:27,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:05:27,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-27 20:05:27,213 INFO L175 Difference]: Start difference. First operand has 282 places, 354 transitions, 3777 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:05:27,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 370 transitions, 4599 flow [2024-06-27 20:05:28,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 370 transitions, 4510 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 20:05:28,130 INFO L231 Difference]: Finished difference. Result has 287 places, 357 transitions, 3824 flow [2024-06-27 20:05:28,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3824, PETRI_PLACES=287, PETRI_TRANSITIONS=357} [2024-06-27 20:05:28,131 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-27 20:05:28,131 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 357 transitions, 3824 flow [2024-06-27 20:05:28,131 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 20:05:28,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:28,131 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 20:05:28,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:05:28,132 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:28,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash -456768032, now seen corresponding path program 3 times [2024-06-27 20:05:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:28,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939240502] [2024-06-27 20:05:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:28,831 INFO 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 20:05:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939240502] [2024-06-27 20:05:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939240502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:28,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:28,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:28,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294711047] [2024-06-27 20:05:28,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:28,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:28,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:28,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:28,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:28,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 357 transitions, 3824 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 20:05:28,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:28,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:28,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:29,894 INFO L124 PetriNetUnfolderBase]: 3391/5536 cut-off events. [2024-06-27 20:05:29,894 INFO L125 PetriNetUnfolderBase]: For 542873/542873 co-relation queries the response was YES. [2024-06-27 20:05:29,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43334 conditions, 5536 events. 3391/5536 cut-off events. For 542873/542873 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34798 event pairs, 808 based on Foata normal form. 2/5520 useless extension candidates. Maximal degree in co-relation 43204. Up to 5205 conditions per place. [2024-06-27 20:05:29,964 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 318 selfloop transitions, 47 changer transitions 0/374 dead transitions. [2024-06-27 20:05:29,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 374 transitions, 4770 flow [2024-06-27 20:05:29,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 20:05:29,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-27 20:05:29,965 INFO L175 Difference]: Start difference. First operand has 287 places, 357 transitions, 3824 flow. Second operand 8 states and 146 transitions. [2024-06-27 20:05:29,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 374 transitions, 4770 flow [2024-06-27 20:05:30,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 374 transitions, 4614 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:30,889 INFO L231 Difference]: Finished difference. Result has 289 places, 357 transitions, 3768 flow [2024-06-27 20:05:30,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3768, PETRI_PLACES=289, PETRI_TRANSITIONS=357} [2024-06-27 20:05:30,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-27 20:05:30,890 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 357 transitions, 3768 flow [2024-06-27 20:05:30,891 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 20:05:30,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:30,891 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 20:05:30,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:05:30,891 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:30,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -934194432, now seen corresponding path program 4 times [2024-06-27 20:05:30,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:30,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633482549] [2024-06-27 20:05:30,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633482549] [2024-06-27 20:05:31,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633482549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:31,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:31,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559071587] [2024-06-27 20:05:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:31,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:31,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:31,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:31,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:31,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:31,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 357 transitions, 3768 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 20:05:31,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:31,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:31,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:32,709 INFO L124 PetriNetUnfolderBase]: 3380/5515 cut-off events. [2024-06-27 20:05:32,710 INFO L125 PetriNetUnfolderBase]: For 553912/553912 co-relation queries the response was YES. [2024-06-27 20:05:32,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43211 conditions, 5515 events. 3380/5515 cut-off events. For 553912/553912 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34692 event pairs, 802 based on Foata normal form. 3/5500 useless extension candidates. Maximal degree in co-relation 43080. Up to 5261 conditions per place. [2024-06-27 20:05:32,777 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 343 selfloop transitions, 20 changer transitions 0/372 dead transitions. [2024-06-27 20:05:32,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 372 transitions, 4598 flow [2024-06-27 20:05:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:32,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 20:05:32,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-27 20:05:32,778 INFO L175 Difference]: Start difference. First operand has 289 places, 357 transitions, 3768 flow. Second operand 8 states and 134 transitions. [2024-06-27 20:05:32,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 372 transitions, 4598 flow [2024-06-27 20:05:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 372 transitions, 4512 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:33,722 INFO L231 Difference]: Finished difference. Result has 291 places, 360 transitions, 3804 flow [2024-06-27 20:05:33,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3804, PETRI_PLACES=291, PETRI_TRANSITIONS=360} [2024-06-27 20:05:33,723 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-27 20:05:33,723 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 360 transitions, 3804 flow [2024-06-27 20:05:33,723 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 20:05:33,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:33,724 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 20:05:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:05:33,724 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:33,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1795074378, now seen corresponding path program 5 times [2024-06-27 20:05:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607940226] [2024-06-27 20:05:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:34,327 INFO 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 20:05:34,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:34,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607940226] [2024-06-27 20:05:34,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607940226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:34,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:34,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:34,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939743226] [2024-06-27 20:05:34,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:34,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:34,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:34,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 360 transitions, 3804 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 20:05:34,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:34,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:34,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:35,447 INFO L124 PetriNetUnfolderBase]: 3390/5529 cut-off events. [2024-06-27 20:05:35,447 INFO L125 PetriNetUnfolderBase]: For 562993/562993 co-relation queries the response was YES. [2024-06-27 20:05:35,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43436 conditions, 5529 events. 3390/5529 cut-off events. For 562993/562993 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 34782 event pairs, 801 based on Foata normal form. 2/5513 useless extension candidates. Maximal degree in co-relation 43304. Up to 5246 conditions per place. [2024-06-27 20:05:35,512 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 335 selfloop transitions, 33 changer transitions 0/377 dead transitions. [2024-06-27 20:05:35,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 377 transitions, 4823 flow [2024-06-27 20:05:35,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:05:35,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-27 20:05:35,514 INFO L175 Difference]: Start difference. First operand has 291 places, 360 transitions, 3804 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:05:35,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 377 transitions, 4823 flow [2024-06-27 20:05:36,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 377 transitions, 4735 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:36,568 INFO L231 Difference]: Finished difference. Result has 293 places, 363 transitions, 3861 flow [2024-06-27 20:05:36,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3861, PETRI_PLACES=293, PETRI_TRANSITIONS=363} [2024-06-27 20:05:36,569 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-27 20:05:36,569 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 363 transitions, 3861 flow [2024-06-27 20:05:36,569 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 20:05:36,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:36,569 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 20:05:36,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:05:36,570 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:36,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1629168299, now seen corresponding path program 3 times [2024-06-27 20:05:36,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:36,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732804117] [2024-06-27 20:05:36,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:37,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732804117] [2024-06-27 20:05:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732804117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:37,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706519642] [2024-06-27 20:05:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:37,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:37,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:37,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:37,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:37,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 363 transitions, 3861 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 20:05:37,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:37,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:38,368 INFO L124 PetriNetUnfolderBase]: 3387/5525 cut-off events. [2024-06-27 20:05:38,369 INFO L125 PetriNetUnfolderBase]: For 566543/566543 co-relation queries the response was YES. [2024-06-27 20:05:38,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43364 conditions, 5525 events. 3387/5525 cut-off events. For 566543/566543 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 34755 event pairs, 806 based on Foata normal form. 1/5508 useless extension candidates. Maximal degree in co-relation 43231. Up to 5285 conditions per place. [2024-06-27 20:05:38,437 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 349 selfloop transitions, 18 changer transitions 0/376 dead transitions. [2024-06-27 20:05:38,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 376 transitions, 4691 flow [2024-06-27 20:05:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 20:05:38,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-27 20:05:38,439 INFO L175 Difference]: Start difference. First operand has 293 places, 363 transitions, 3861 flow. Second operand 8 states and 132 transitions. [2024-06-27 20:05:38,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 376 transitions, 4691 flow [2024-06-27 20:05:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 376 transitions, 4527 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 20:05:39,566 INFO L231 Difference]: Finished difference. Result has 294 places, 366 transitions, 3815 flow [2024-06-27 20:05:39,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3697, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3815, PETRI_PLACES=294, PETRI_TRANSITIONS=366} [2024-06-27 20:05:39,567 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-27 20:05:39,567 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 366 transitions, 3815 flow [2024-06-27 20:05:39,567 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 20:05:39,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:39,567 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 20:05:39,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:05:39,567 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:39,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1795068798, now seen corresponding path program 6 times [2024-06-27 20:05:39,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:39,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743028237] [2024-06-27 20:05:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:39,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:40,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743028237] [2024-06-27 20:05:40,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743028237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:40,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162789706] [2024-06-27 20:05:40,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:40,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:40,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:05:40,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 366 transitions, 3815 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 20:05:40,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:40,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:05:40,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:41,358 INFO L124 PetriNetUnfolderBase]: 3381/5515 cut-off events. [2024-06-27 20:05:41,358 INFO L125 PetriNetUnfolderBase]: For 572310/572310 co-relation queries the response was YES. [2024-06-27 20:05:41,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43482 conditions, 5515 events. 3381/5515 cut-off events. For 572310/572310 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 34644 event pairs, 805 based on Foata normal form. 2/5499 useless extension candidates. Maximal degree in co-relation 43348. Up to 5237 conditions per place. [2024-06-27 20:05:41,427 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 338 selfloop transitions, 32 changer transitions 0/379 dead transitions. [2024-06-27 20:05:41,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 379 transitions, 4593 flow [2024-06-27 20:05:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:05:41,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-27 20:05:41,429 INFO L175 Difference]: Start difference. First operand has 294 places, 366 transitions, 3815 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:05:41,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 379 transitions, 4593 flow [2024-06-27 20:05:42,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 379 transitions, 4455 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:42,611 INFO L231 Difference]: Finished difference. Result has 296 places, 366 transitions, 3747 flow [2024-06-27 20:05:42,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3747, PETRI_PLACES=296, PETRI_TRANSITIONS=366} [2024-06-27 20:05:42,612 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-27 20:05:42,612 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 366 transitions, 3747 flow [2024-06-27 20:05:42,612 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 20:05:42,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:42,613 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 20:05:42,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:05:42,613 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1787440101, now seen corresponding path program 1 times [2024-06-27 20:05:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807139766] [2024-06-27 20:05:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:43,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807139766] [2024-06-27 20:05:43,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807139766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:43,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:43,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:05:43,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045091063] [2024-06-27 20:05:43,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:43,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:05:43,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:43,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:05:43,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:05:43,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:43,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 366 transitions, 3747 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:43,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:43,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:43,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:44,908 INFO L124 PetriNetUnfolderBase]: 3559/5712 cut-off events. [2024-06-27 20:05:44,909 INFO L125 PetriNetUnfolderBase]: For 678038/678038 co-relation queries the response was YES. [2024-06-27 20:05:44,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46725 conditions, 5712 events. 3559/5712 cut-off events. For 678038/678038 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 35023 event pairs, 871 based on Foata normal form. 2/5711 useless extension candidates. Maximal degree in co-relation 46590. Up to 5542 conditions per place. [2024-06-27 20:05:44,975 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 356 selfloop transitions, 19 changer transitions 0/379 dead transitions. [2024-06-27 20:05:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 379 transitions, 4575 flow [2024-06-27 20:05:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 20:05:44,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414634146341464 [2024-06-27 20:05:44,977 INFO L175 Difference]: Start difference. First operand has 296 places, 366 transitions, 3747 flow. Second operand 8 states and 126 transitions. [2024-06-27 20:05:44,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 379 transitions, 4575 flow [2024-06-27 20:05:46,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 379 transitions, 4493 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:05:46,298 INFO L231 Difference]: Finished difference. Result has 297 places, 368 transitions, 3762 flow [2024-06-27 20:05:46,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3762, PETRI_PLACES=297, PETRI_TRANSITIONS=368} [2024-06-27 20:05:46,299 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-27 20:05:46,299 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 368 transitions, 3762 flow [2024-06-27 20:05:46,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:46,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:46,299 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 20:05:46,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:05:46,300 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:46,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2072584321, now seen corresponding path program 1 times [2024-06-27 20:05:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087741773] [2024-06-27 20:05:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:47,139 INFO 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 20:05:47,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:47,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087741773] [2024-06-27 20:05:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087741773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:47,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:47,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921313987] [2024-06-27 20:05:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:47,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:47,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:47,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 368 transitions, 3762 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:47,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:47,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:47,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:48,366 INFO L124 PetriNetUnfolderBase]: 3564/5717 cut-off events. [2024-06-27 20:05:48,366 INFO L125 PetriNetUnfolderBase]: For 687032/687032 co-relation queries the response was YES. [2024-06-27 20:05:48,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46991 conditions, 5717 events. 3564/5717 cut-off events. For 687032/687032 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 35009 event pairs, 761 based on Foata normal form. 1/5715 useless extension candidates. Maximal degree in co-relation 46855. Up to 5482 conditions per place. [2024-06-27 20:05:48,439 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 357 selfloop transitions, 38 changer transitions 0/399 dead transitions. [2024-06-27 20:05:48,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 399 transitions, 4940 flow [2024-06-27 20:05:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 20:05:48,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-27 20:05:48,441 INFO L175 Difference]: Start difference. First operand has 297 places, 368 transitions, 3762 flow. Second operand 8 states and 145 transitions. [2024-06-27 20:05:48,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 399 transitions, 4940 flow [2024-06-27 20:05:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 399 transitions, 4859 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:05:49,784 INFO L231 Difference]: Finished difference. Result has 299 places, 374 transitions, 3905 flow [2024-06-27 20:05:49,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3905, PETRI_PLACES=299, PETRI_TRANSITIONS=374} [2024-06-27 20:05:49,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-27 20:05:49,785 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 374 transitions, 3905 flow [2024-06-27 20:05:49,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:49,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:49,785 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 20:05:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:05:49,785 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -573358677, now seen corresponding path program 2 times [2024-06-27 20:05:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705906625] [2024-06-27 20:05:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:50,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:50,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705906625] [2024-06-27 20:05:50,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705906625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:50,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517680282] [2024-06-27 20:05:50,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:50,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:50,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:50,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:50,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:50,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:50,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 374 transitions, 3905 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:50,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:50,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:50,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:51,774 INFO L124 PetriNetUnfolderBase]: 3574/5731 cut-off events. [2024-06-27 20:05:51,774 INFO L125 PetriNetUnfolderBase]: For 704695/704695 co-relation queries the response was YES. [2024-06-27 20:05:51,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47646 conditions, 5731 events. 3574/5731 cut-off events. For 704695/704695 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 35131 event pairs, 757 based on Foata normal form. 1/5729 useless extension candidates. Maximal degree in co-relation 47509. Up to 5510 conditions per place. [2024-06-27 20:05:51,849 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 361 selfloop transitions, 36 changer transitions 0/401 dead transitions. [2024-06-27 20:05:51,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 401 transitions, 4866 flow [2024-06-27 20:05:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:05:51,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:05:51,851 INFO L175 Difference]: Start difference. First operand has 299 places, 374 transitions, 3905 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:05:51,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 401 transitions, 4866 flow [2024-06-27 20:05:53,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 401 transitions, 4697 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-06-27 20:05:53,405 INFO L231 Difference]: Finished difference. Result has 304 places, 380 transitions, 3925 flow [2024-06-27 20:05:53,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3774, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3925, PETRI_PLACES=304, PETRI_TRANSITIONS=380} [2024-06-27 20:05:53,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-27 20:05:53,406 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 380 transitions, 3925 flow [2024-06-27 20:05:53,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:53,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:53,406 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 20:05:53,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:05:53,406 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:53,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:53,407 INFO L85 PathProgramCache]: Analyzing trace with hash 372790621, now seen corresponding path program 1 times [2024-06-27 20:05:53,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:53,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127618395] [2024-06-27 20:05:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:53,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:54,110 INFO 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 20:05:54,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:54,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127618395] [2024-06-27 20:05:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127618395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:54,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:54,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852326557] [2024-06-27 20:05:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:54,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:54,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:54,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 380 transitions, 3925 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:54,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:54,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:54,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:55,454 INFO L124 PetriNetUnfolderBase]: 3584/5745 cut-off events. [2024-06-27 20:05:55,454 INFO L125 PetriNetUnfolderBase]: For 722740/722740 co-relation queries the response was YES. [2024-06-27 20:05:55,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47831 conditions, 5745 events. 3584/5745 cut-off events. For 722740/722740 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 35204 event pairs, 755 based on Foata normal form. 2/5744 useless extension candidates. Maximal degree in co-relation 47692. Up to 5436 conditions per place. [2024-06-27 20:05:55,532 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 347 selfloop transitions, 54 changer transitions 0/405 dead transitions. [2024-06-27 20:05:55,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 405 transitions, 4879 flow [2024-06-27 20:05:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:05:55,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:05:55,534 INFO L175 Difference]: Start difference. First operand has 304 places, 380 transitions, 3925 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:05:55,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 405 transitions, 4879 flow [2024-06-27 20:05:57,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 405 transitions, 4785 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 20:05:57,198 INFO L231 Difference]: Finished difference. Result has 307 places, 383 transitions, 4035 flow [2024-06-27 20:05:57,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3831, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4035, PETRI_PLACES=307, PETRI_TRANSITIONS=383} [2024-06-27 20:05:57,199 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 265 predicate places. [2024-06-27 20:05:57,199 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 383 transitions, 4035 flow [2024-06-27 20:05:57,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:57,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:05:57,200 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 20:05:57,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:05:57,200 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:05:57,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:05:57,200 INFO L85 PathProgramCache]: Analyzing trace with hash -463482711, now seen corresponding path program 2 times [2024-06-27 20:05:57,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:05:57,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120958639] [2024-06-27 20:05:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:05:57,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:05:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:05:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:05:57,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:05:57,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120958639] [2024-06-27 20:05:57,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120958639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:05:57,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:05:57,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:05:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323613593] [2024-06-27 20:05:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:05:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:05:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:05:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:05:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:05:57,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:05:57,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 383 transitions, 4035 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:05:57,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:05:57,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:05:57,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:05:59,107 INFO L124 PetriNetUnfolderBase]: 3610/5783 cut-off events. [2024-06-27 20:05:59,107 INFO L125 PetriNetUnfolderBase]: For 749342/749342 co-relation queries the response was YES. [2024-06-27 20:05:59,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49059 conditions, 5783 events. 3610/5783 cut-off events. For 749342/749342 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 35397 event pairs, 758 based on Foata normal form. 2/5782 useless extension candidates. Maximal degree in co-relation 48919. Up to 5408 conditions per place. [2024-06-27 20:05:59,174 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 337 selfloop transitions, 70 changer transitions 0/411 dead transitions. [2024-06-27 20:05:59,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 411 transitions, 5293 flow [2024-06-27 20:05:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:05:59,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:05:59,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 20:05:59,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43597560975609756 [2024-06-27 20:05:59,176 INFO L175 Difference]: Start difference. First operand has 307 places, 383 transitions, 4035 flow. Second operand 8 states and 143 transitions. [2024-06-27 20:05:59,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 411 transitions, 5293 flow [2024-06-27 20:06:00,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 411 transitions, 5127 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:00,650 INFO L231 Difference]: Finished difference. Result has 309 places, 389 transitions, 4185 flow [2024-06-27 20:06:00,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4185, PETRI_PLACES=309, PETRI_TRANSITIONS=389} [2024-06-27 20:06:00,651 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 267 predicate places. [2024-06-27 20:06:00,651 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 389 transitions, 4185 flow [2024-06-27 20:06:00,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:00,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:00,651 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 20:06:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:06:00,651 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:00,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash -463482525, now seen corresponding path program 1 times [2024-06-27 20:06:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825511680] [2024-06-27 20:06:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:01,311 INFO 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 20:06:01,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825511680] [2024-06-27 20:06:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825511680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063365524] [2024-06-27 20:06:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:01,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:01,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:01,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 389 transitions, 4185 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:01,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:01,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:01,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:02,536 INFO L124 PetriNetUnfolderBase]: 3636/5821 cut-off events. [2024-06-27 20:06:02,536 INFO L125 PetriNetUnfolderBase]: For 778183/778183 co-relation queries the response was YES. [2024-06-27 20:06:02,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50030 conditions, 5821 events. 3636/5821 cut-off events. For 778183/778183 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35660 event pairs, 750 based on Foata normal form. 2/5820 useless extension candidates. Maximal degree in co-relation 49889. Up to 5517 conditions per place. [2024-06-27 20:06:02,617 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 368 selfloop transitions, 52 changer transitions 0/424 dead transitions. [2024-06-27 20:06:02,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 424 transitions, 5476 flow [2024-06-27 20:06:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 20:06:02,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 20:06:02,618 INFO L175 Difference]: Start difference. First operand has 309 places, 389 transitions, 4185 flow. Second operand 8 states and 144 transitions. [2024-06-27 20:06:02,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 424 transitions, 5476 flow [2024-06-27 20:06:04,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 424 transitions, 5334 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-27 20:06:04,409 INFO L231 Difference]: Finished difference. Result has 314 places, 402 transitions, 4364 flow [2024-06-27 20:06:04,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4043, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4364, PETRI_PLACES=314, PETRI_TRANSITIONS=402} [2024-06-27 20:06:04,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-27 20:06:04,409 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 402 transitions, 4364 flow [2024-06-27 20:06:04,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:04,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:04,410 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 20:06:04,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:06:04,410 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:04,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:04,410 INFO L85 PathProgramCache]: Analyzing trace with hash -286351005, now seen corresponding path program 2 times [2024-06-27 20:06:04,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:04,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263211078] [2024-06-27 20:06:04,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:04,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:05,019 INFO 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 20:06:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:05,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263211078] [2024-06-27 20:06:05,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263211078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:05,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:05,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:05,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643594950] [2024-06-27 20:06:05,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:05,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:05,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:05,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 402 transitions, 4364 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:05,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:05,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:05,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:06,266 INFO L124 PetriNetUnfolderBase]: 3662/5863 cut-off events. [2024-06-27 20:06:06,266 INFO L125 PetriNetUnfolderBase]: For 806812/806812 co-relation queries the response was YES. [2024-06-27 20:06:06,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51293 conditions, 5863 events. 3662/5863 cut-off events. For 806812/806812 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36020 event pairs, 752 based on Foata normal form. 2/5862 useless extension candidates. Maximal degree in co-relation 51149. Up to 5633 conditions per place. [2024-06-27 20:06:06,348 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 382 selfloop transitions, 41 changer transitions 0/427 dead transitions. [2024-06-27 20:06:06,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 427 transitions, 5619 flow [2024-06-27 20:06:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:06:06,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:06:06,350 INFO L175 Difference]: Start difference. First operand has 314 places, 402 transitions, 4364 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:06:06,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 427 transitions, 5619 flow [2024-06-27 20:06:08,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 427 transitions, 5441 flow, removed 79 selfloop flow, removed 3 redundant places. [2024-06-27 20:06:08,622 INFO L231 Difference]: Finished difference. Result has 319 places, 409 transitions, 4429 flow [2024-06-27 20:06:08,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4254, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4429, PETRI_PLACES=319, PETRI_TRANSITIONS=409} [2024-06-27 20:06:08,622 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-27 20:06:08,622 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 409 transitions, 4429 flow [2024-06-27 20:06:08,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:08,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:08,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:08,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:06:08,623 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:08,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2081988481, now seen corresponding path program 3 times [2024-06-27 20:06:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146578240] [2024-06-27 20:06:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:09,353 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 20:06:09,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146578240] [2024-06-27 20:06:09,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146578240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:09,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:09,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:09,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981394722] [2024-06-27 20:06:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:09,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:09,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:09,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 409 transitions, 4429 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:09,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:09,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:09,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:10,789 INFO L124 PetriNetUnfolderBase]: 3667/5864 cut-off events. [2024-06-27 20:06:10,790 INFO L125 PetriNetUnfolderBase]: For 815891/815891 co-relation queries the response was YES. [2024-06-27 20:06:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51212 conditions, 5864 events. 3667/5864 cut-off events. For 815891/815891 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 35922 event pairs, 753 based on Foata normal form. 1/5862 useless extension candidates. Maximal degree in co-relation 51066. Up to 5639 conditions per place. [2024-06-27 20:06:10,863 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 390 selfloop transitions, 34 changer transitions 0/428 dead transitions. [2024-06-27 20:06:10,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 428 transitions, 5369 flow [2024-06-27 20:06:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:10,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:06:10,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-27 20:06:10,864 INFO L175 Difference]: Start difference. First operand has 319 places, 409 transitions, 4429 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:06:10,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 428 transitions, 5369 flow [2024-06-27 20:06:13,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 428 transitions, 5307 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 20:06:13,118 INFO L231 Difference]: Finished difference. Result has 324 places, 412 transitions, 4493 flow [2024-06-27 20:06:13,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4367, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4493, PETRI_PLACES=324, PETRI_TRANSITIONS=412} [2024-06-27 20:06:13,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-27 20:06:13,119 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 412 transitions, 4493 flow [2024-06-27 20:06:13,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:13,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:13,119 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 20:06:13,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:06:13,119 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:13,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash -286344495, now seen corresponding path program 3 times [2024-06-27 20:06:13,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:13,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719679433] [2024-06-27 20:06:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:13,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:13,663 INFO 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 20:06:13,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719679433] [2024-06-27 20:06:13,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719679433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:13,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:13,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:13,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744571076] [2024-06-27 20:06:13,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:13,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:13,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:13,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:13,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:13,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 412 transitions, 4493 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:13,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:13,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:13,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:14,987 INFO L124 PetriNetUnfolderBase]: 3661/5858 cut-off events. [2024-06-27 20:06:14,987 INFO L125 PetriNetUnfolderBase]: For 826779/826779 co-relation queries the response was YES. [2024-06-27 20:06:15,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51203 conditions, 5858 events. 3661/5858 cut-off events. For 826779/826779 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 35896 event pairs, 753 based on Foata normal form. 2/5857 useless extension candidates. Maximal degree in co-relation 51055. Up to 5649 conditions per place. [2024-06-27 20:06:15,071 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 388 selfloop transitions, 36 changer transitions 0/428 dead transitions. [2024-06-27 20:06:15,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 428 transitions, 5397 flow [2024-06-27 20:06:15,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:15,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 20:06:15,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:06:15,072 INFO L175 Difference]: Start difference. First operand has 324 places, 412 transitions, 4493 flow. Second operand 8 states and 136 transitions. [2024-06-27 20:06:15,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 428 transitions, 5397 flow [2024-06-27 20:06:17,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 428 transitions, 5275 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:17,281 INFO L231 Difference]: Finished difference. Result has 326 places, 412 transitions, 4449 flow [2024-06-27 20:06:17,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4371, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4449, PETRI_PLACES=326, PETRI_TRANSITIONS=412} [2024-06-27 20:06:17,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-27 20:06:17,282 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 412 transitions, 4449 flow [2024-06-27 20:06:17,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:17,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:17,282 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 20:06:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:06:17,283 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:17,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -286351191, now seen corresponding path program 3 times [2024-06-27 20:06:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:17,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104502881] [2024-06-27 20:06:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:17,897 INFO 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 20:06:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104502881] [2024-06-27 20:06:17,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104502881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:17,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:17,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:17,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61953148] [2024-06-27 20:06:17,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:17,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:17,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:17,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:17,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:17,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 412 transitions, 4449 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:17,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:17,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:17,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:19,205 INFO L124 PetriNetUnfolderBase]: 3671/5876 cut-off events. [2024-06-27 20:06:19,205 INFO L125 PetriNetUnfolderBase]: For 842957/842957 co-relation queries the response was YES. [2024-06-27 20:06:19,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51478 conditions, 5876 events. 3671/5876 cut-off events. For 842957/842957 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 36113 event pairs, 750 based on Foata normal form. 2/5875 useless extension candidates. Maximal degree in co-relation 51329. Up to 5667 conditions per place. [2024-06-27 20:06:19,285 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 398 selfloop transitions, 30 changer transitions 0/432 dead transitions. [2024-06-27 20:06:19,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 432 transitions, 5443 flow [2024-06-27 20:06:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:06:19,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-27 20:06:19,287 INFO L175 Difference]: Start difference. First operand has 326 places, 412 transitions, 4449 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:06:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 432 transitions, 5443 flow [2024-06-27 20:06:21,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 432 transitions, 5355 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:06:21,617 INFO L231 Difference]: Finished difference. Result has 327 places, 415 transitions, 4501 flow [2024-06-27 20:06:21,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4501, PETRI_PLACES=327, PETRI_TRANSITIONS=415} [2024-06-27 20:06:21,617 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-27 20:06:21,617 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 415 transitions, 4501 flow [2024-06-27 20:06:21,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:21,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:21,618 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 20:06:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:06:21,618 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:21,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash -581932533, now seen corresponding path program 1 times [2024-06-27 20:06:21,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:21,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887068515] [2024-06-27 20:06:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:21,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:22,518 INFO 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 20:06:22,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:22,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887068515] [2024-06-27 20:06:22,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887068515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:22,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:22,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549186097] [2024-06-27 20:06:22,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:22,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:22,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:22,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:22,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 415 transitions, 4501 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:22,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:22,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:22,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:23,878 INFO L124 PetriNetUnfolderBase]: 3679/5880 cut-off events. [2024-06-27 20:06:23,878 INFO L125 PetriNetUnfolderBase]: For 859503/859503 co-relation queries the response was YES. [2024-06-27 20:06:23,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51740 conditions, 5880 events. 3679/5880 cut-off events. For 859503/859503 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 35911 event pairs, 620 based on Foata normal form. 2/5879 useless extension candidates. Maximal degree in co-relation 51590. Up to 5609 conditions per place. [2024-06-27 20:06:23,958 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 404 selfloop transitions, 38 changer transitions 0/446 dead transitions. [2024-06-27 20:06:23,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 446 transitions, 5751 flow [2024-06-27 20:06:23,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 20:06:23,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-27 20:06:23,959 INFO L175 Difference]: Start difference. First operand has 327 places, 415 transitions, 4501 flow. Second operand 8 states and 145 transitions. [2024-06-27 20:06:23,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 446 transitions, 5751 flow [2024-06-27 20:06:26,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 446 transitions, 5639 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:26,532 INFO L231 Difference]: Finished difference. Result has 329 places, 419 transitions, 4566 flow [2024-06-27 20:06:26,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4566, PETRI_PLACES=329, PETRI_TRANSITIONS=419} [2024-06-27 20:06:26,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-27 20:06:26,533 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 419 transitions, 4566 flow [2024-06-27 20:06:26,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:26,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:26,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:06:26,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:06:26,533 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:26,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash -581693523, now seen corresponding path program 2 times [2024-06-27 20:06:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:26,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104724789] [2024-06-27 20:06:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:27,436 INFO 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 20:06:27,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:27,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104724789] [2024-06-27 20:06:27,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104724789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:27,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:27,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:27,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321410904] [2024-06-27 20:06:27,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:27,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:27,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:27,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:27,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:27,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 419 transitions, 4566 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:27,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:27,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:27,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:28,881 INFO L124 PetriNetUnfolderBase]: 3687/5894 cut-off events. [2024-06-27 20:06:28,881 INFO L125 PetriNetUnfolderBase]: For 876103/876103 co-relation queries the response was YES. [2024-06-27 20:06:28,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52082 conditions, 5894 events. 3687/5894 cut-off events. For 876103/876103 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 36122 event pairs, 750 based on Foata normal form. 2/5893 useless extension candidates. Maximal degree in co-relation 51931. Up to 5666 conditions per place. [2024-06-27 20:06:28,961 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 404 selfloop transitions, 35 changer transitions 0/443 dead transitions. [2024-06-27 20:06:28,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 443 transitions, 5558 flow [2024-06-27 20:06:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:06:28,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:06:28,962 INFO L175 Difference]: Start difference. First operand has 329 places, 419 transitions, 4566 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:06:28,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 443 transitions, 5558 flow [2024-06-27 20:06:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 443 transitions, 5438 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 20:06:31,569 INFO L231 Difference]: Finished difference. Result has 333 places, 421 transitions, 4575 flow [2024-06-27 20:06:31,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4575, PETRI_PLACES=333, PETRI_TRANSITIONS=421} [2024-06-27 20:06:31,570 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 20:06:31,570 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 421 transitions, 4575 flow [2024-06-27 20:06:31,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:31,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:31,570 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 20:06:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:06:31,570 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:31,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1488972993, now seen corresponding path program 3 times [2024-06-27 20:06:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886789245] [2024-06-27 20:06:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:31,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:32,442 INFO 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 20:06:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:32,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886789245] [2024-06-27 20:06:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886789245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970954576] [2024-06-27 20:06:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:32,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:32,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 421 transitions, 4575 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:32,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:32,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:32,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:33,934 INFO L124 PetriNetUnfolderBase]: 3695/5906 cut-off events. [2024-06-27 20:06:33,934 INFO L125 PetriNetUnfolderBase]: For 892813/892813 co-relation queries the response was YES. [2024-06-27 20:06:33,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52251 conditions, 5906 events. 3695/5906 cut-off events. For 892813/892813 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 36223 event pairs, 750 based on Foata normal form. 2/5905 useless extension candidates. Maximal degree in co-relation 52098. Up to 5678 conditions per place. [2024-06-27 20:06:34,009 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 403 selfloop transitions, 33 changer transitions 0/440 dead transitions. [2024-06-27 20:06:34,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 440 transitions, 5531 flow [2024-06-27 20:06:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:06:34,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-27 20:06:34,010 INFO L175 Difference]: Start difference. First operand has 333 places, 421 transitions, 4575 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:06:34,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 440 transitions, 5531 flow [2024-06-27 20:06:36,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 440 transitions, 5440 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:36,576 INFO L231 Difference]: Finished difference. Result has 335 places, 423 transitions, 4595 flow [2024-06-27 20:06:36,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4595, PETRI_PLACES=335, PETRI_TRANSITIONS=423} [2024-06-27 20:06:36,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 293 predicate places. [2024-06-27 20:06:36,576 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 423 transitions, 4595 flow [2024-06-27 20:06:36,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:36,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:36,577 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 20:06:36,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:06:36,577 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:36,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2038903801, now seen corresponding path program 4 times [2024-06-27 20:06:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637703225] [2024-06-27 20:06:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:37,279 INFO 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 20:06:37,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637703225] [2024-06-27 20:06:37,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637703225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:37,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:37,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232753457] [2024-06-27 20:06:37,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:37,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:37,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 423 transitions, 4595 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:37,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:37,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:37,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:38,606 INFO L124 PetriNetUnfolderBase]: 3705/5924 cut-off events. [2024-06-27 20:06:38,607 INFO L125 PetriNetUnfolderBase]: For 909971/909974 co-relation queries the response was YES. [2024-06-27 20:06:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52559 conditions, 5924 events. 3705/5924 cut-off events. For 909971/909974 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 36349 event pairs, 754 based on Foata normal form. 4/5920 useless extension candidates. Maximal degree in co-relation 52405. Up to 5538 conditions per place. [2024-06-27 20:06:38,689 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 369 selfloop transitions, 73 changer transitions 0/446 dead transitions. [2024-06-27 20:06:38,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 446 transitions, 5641 flow [2024-06-27 20:06:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:38,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 20:06:38,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-27 20:06:38,824 INFO L175 Difference]: Start difference. First operand has 335 places, 423 transitions, 4595 flow. Second operand 8 states and 142 transitions. [2024-06-27 20:06:38,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 446 transitions, 5641 flow [2024-06-27 20:06:41,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 446 transitions, 5550 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:41,242 INFO L231 Difference]: Finished difference. Result has 337 places, 426 transitions, 4756 flow [2024-06-27 20:06:41,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4756, PETRI_PLACES=337, PETRI_TRANSITIONS=426} [2024-06-27 20:06:41,242 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-27 20:06:41,242 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 426 transitions, 4756 flow [2024-06-27 20:06:41,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:41,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:41,243 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 20:06:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:06:41,243 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:41,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1696485055, now seen corresponding path program 4 times [2024-06-27 20:06:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:41,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657907185] [2024-06-27 20:06:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:41,916 INFO 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 20:06:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:41,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657907185] [2024-06-27 20:06:41,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657907185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:41,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:41,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042247752] [2024-06-27 20:06:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:41,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:41,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 426 transitions, 4756 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:41,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:41,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:41,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:43,188 INFO L124 PetriNetUnfolderBase]: 3723/5950 cut-off events. [2024-06-27 20:06:43,189 INFO L125 PetriNetUnfolderBase]: For 935556/935559 co-relation queries the response was YES. [2024-06-27 20:06:43,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53563 conditions, 5950 events. 3723/5950 cut-off events. For 935556/935559 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36534 event pairs, 751 based on Foata normal form. 4/5947 useless extension candidates. Maximal degree in co-relation 53408. Up to 5542 conditions per place. [2024-06-27 20:06:43,271 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 378 selfloop transitions, 79 changer transitions 0/461 dead transitions. [2024-06-27 20:06:43,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 461 transitions, 6361 flow [2024-06-27 20:06:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 20:06:43,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-27 20:06:43,273 INFO L175 Difference]: Start difference. First operand has 337 places, 426 transitions, 4756 flow. Second operand 8 states and 145 transitions. [2024-06-27 20:06:43,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 461 transitions, 6361 flow [2024-06-27 20:06:45,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 461 transitions, 6135 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:45,390 INFO L231 Difference]: Finished difference. Result has 340 places, 439 transitions, 4936 flow [2024-06-27 20:06:45,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4936, PETRI_PLACES=340, PETRI_TRANSITIONS=439} [2024-06-27 20:06:45,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 298 predicate places. [2024-06-27 20:06:45,390 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 439 transitions, 4936 flow [2024-06-27 20:06:45,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:45,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:45,391 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 20:06:45,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:06:45,391 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:45,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:45,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1401811647, now seen corresponding path program 5 times [2024-06-27 20:06:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:45,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60917397] [2024-06-27 20:06:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:45,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:46,120 INFO 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 20:06:46,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:46,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60917397] [2024-06-27 20:06:46,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60917397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:46,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:46,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70348277] [2024-06-27 20:06:46,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:46,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:46,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 439 transitions, 4936 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:46,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:46,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:46,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:47,552 INFO L124 PetriNetUnfolderBase]: 3749/5988 cut-off events. [2024-06-27 20:06:47,552 INFO L125 PetriNetUnfolderBase]: For 968443/968446 co-relation queries the response was YES. [2024-06-27 20:06:47,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54877 conditions, 5988 events. 3749/5988 cut-off events. For 968443/968446 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 36805 event pairs, 752 based on Foata normal form. 4/5985 useless extension candidates. Maximal degree in co-relation 54720. Up to 5557 conditions per place. [2024-06-27 20:06:47,639 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 379 selfloop transitions, 87 changer transitions 0/470 dead transitions. [2024-06-27 20:06:47,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 470 transitions, 6378 flow [2024-06-27 20:06:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:06:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:06:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 20:06:47,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170731707317073 [2024-06-27 20:06:47,641 INFO L175 Difference]: Start difference. First operand has 340 places, 439 transitions, 4936 flow. Second operand 10 states and 171 transitions. [2024-06-27 20:06:47,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 470 transitions, 6378 flow [2024-06-27 20:06:50,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 470 transitions, 6241 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-27 20:06:50,507 INFO L231 Difference]: Finished difference. Result has 347 places, 445 transitions, 5186 flow [2024-06-27 20:06:50,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4803, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5186, PETRI_PLACES=347, PETRI_TRANSITIONS=445} [2024-06-27 20:06:50,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 305 predicate places. [2024-06-27 20:06:50,507 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 445 transitions, 5186 flow [2024-06-27 20:06:50,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:50,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:50,508 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 20:06:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:06:50,508 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:50,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1629592827, now seen corresponding path program 6 times [2024-06-27 20:06:50,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:50,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338145653] [2024-06-27 20:06:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:06:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338145653] [2024-06-27 20:06:51,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338145653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:51,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:51,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:51,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035749738] [2024-06-27 20:06:51,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:51,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:51,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:51,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 445 transitions, 5186 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:51,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:51,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:51,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:52,454 INFO L124 PetriNetUnfolderBase]: 3767/6015 cut-off events. [2024-06-27 20:06:52,454 INFO L125 PetriNetUnfolderBase]: For 992977/992980 co-relation queries the response was YES. [2024-06-27 20:06:52,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55645 conditions, 6015 events. 3767/6015 cut-off events. For 992977/992980 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 36969 event pairs, 754 based on Foata normal form. 4/6012 useless extension candidates. Maximal degree in co-relation 55486. Up to 5455 conditions per place. [2024-06-27 20:06:52,543 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 361 selfloop transitions, 108 changer transitions 0/473 dead transitions. [2024-06-27 20:06:52,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 473 transitions, 6854 flow [2024-06-27 20:06:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 20:06:52,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-27 20:06:52,545 INFO L175 Difference]: Start difference. First operand has 347 places, 445 transitions, 5186 flow. Second operand 8 states and 145 transitions. [2024-06-27 20:06:52,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 473 transitions, 6854 flow [2024-06-27 20:06:55,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 473 transitions, 6621 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-27 20:06:55,499 INFO L231 Difference]: Finished difference. Result has 349 places, 451 transitions, 5389 flow [2024-06-27 20:06:55,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5389, PETRI_PLACES=349, PETRI_TRANSITIONS=451} [2024-06-27 20:06:55,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-06-27 20:06:55,499 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 451 transitions, 5389 flow [2024-06-27 20:06:55,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:55,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:06:55,500 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 20:06:55,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:06:55,500 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:06:55,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:06:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash 650269719, now seen corresponding path program 7 times [2024-06-27 20:06:55,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:06:55,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431597947] [2024-06-27 20:06:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:06:55,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:06:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:06:56,115 INFO 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 20:06:56,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:06:56,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431597947] [2024-06-27 20:06:56,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431597947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:06:56,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:06:56,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:06:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102474010] [2024-06-27 20:06:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:06:56,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:06:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:06:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:06:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:06:56,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:06:56,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 451 transitions, 5389 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:06:56,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:06:56,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:06:56,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:06:57,583 INFO L124 PetriNetUnfolderBase]: 3761/6003 cut-off events. [2024-06-27 20:06:57,583 INFO L125 PetriNetUnfolderBase]: For 1004015/1004018 co-relation queries the response was YES. [2024-06-27 20:06:57,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55958 conditions, 6003 events. 3761/6003 cut-off events. For 1004015/1004018 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 36858 event pairs, 752 based on Foata normal form. 4/6000 useless extension candidates. Maximal degree in co-relation 55797. Up to 5577 conditions per place. [2024-06-27 20:06:57,663 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 379 selfloop transitions, 86 changer transitions 0/469 dead transitions. [2024-06-27 20:06:57,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 469 transitions, 6393 flow [2024-06-27 20:06:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:06:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:06:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:06:57,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42378048780487804 [2024-06-27 20:06:57,665 INFO L175 Difference]: Start difference. First operand has 349 places, 451 transitions, 5389 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:06:57,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 469 transitions, 6393 flow [2024-06-27 20:07:01,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 469 transitions, 6111 flow, removed 94 selfloop flow, removed 4 redundant places. [2024-06-27 20:07:01,057 INFO L231 Difference]: Finished difference. Result has 353 places, 451 transitions, 5285 flow [2024-06-27 20:07:01,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5107, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5285, PETRI_PLACES=353, PETRI_TRANSITIONS=451} [2024-06-27 20:07:01,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-27 20:07:01,058 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 451 transitions, 5285 flow [2024-06-27 20:07:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:01,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:01,058 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 20:07:01,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:07:01,058 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:01,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1684104895, now seen corresponding path program 5 times [2024-06-27 20:07:01,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605275178] [2024-06-27 20:07:01,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:01,746 INFO 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 20:07:01,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:01,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605275178] [2024-06-27 20:07:01,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605275178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:01,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:01,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:01,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194398835] [2024-06-27 20:07:01,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:01,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:01,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:01,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:01,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 451 transitions, 5285 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:01,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:01,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:01,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:03,073 INFO L124 PetriNetUnfolderBase]: 3787/6041 cut-off events. [2024-06-27 20:07:03,073 INFO L125 PetriNetUnfolderBase]: For 1024835/1024838 co-relation queries the response was YES. [2024-06-27 20:07:03,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56117 conditions, 6041 events. 3787/6041 cut-off events. For 1024835/1024838 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 37085 event pairs, 758 based on Foata normal form. 4/6038 useless extension candidates. Maximal degree in co-relation 55954. Up to 5620 conditions per place. [2024-06-27 20:07:03,159 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 382 selfloop transitions, 91 changer transitions 0/477 dead transitions. [2024-06-27 20:07:03,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 477 transitions, 6834 flow [2024-06-27 20:07:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 20:07:03,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-27 20:07:03,160 INFO L175 Difference]: Start difference. First operand has 353 places, 451 transitions, 5285 flow. Second operand 8 states and 142 transitions. [2024-06-27 20:07:03,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 477 transitions, 6834 flow [2024-06-27 20:07:06,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 477 transitions, 6662 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 20:07:06,479 INFO L231 Difference]: Finished difference. Result has 354 places, 458 transitions, 5384 flow [2024-06-27 20:07:06,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5113, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5384, PETRI_PLACES=354, PETRI_TRANSITIONS=458} [2024-06-27 20:07:06,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-06-27 20:07:06,480 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 458 transitions, 5384 flow [2024-06-27 20:07:06,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:06,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:06,480 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 20:07:06,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:07:06,480 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:06,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1684520791, now seen corresponding path program 8 times [2024-06-27 20:07:06,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088476335] [2024-06-27 20:07:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:07,089 INFO 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 20:07:07,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:07,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088476335] [2024-06-27 20:07:07,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088476335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:07,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:07,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:07,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515524245] [2024-06-27 20:07:07,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:07,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:07,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:07,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:07,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:07,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:07,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 458 transitions, 5384 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:07,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:07,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:08,496 INFO L124 PetriNetUnfolderBase]: 3813/6085 cut-off events. [2024-06-27 20:07:08,497 INFO L125 PetriNetUnfolderBase]: For 1055037/1055040 co-relation queries the response was YES. [2024-06-27 20:07:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56929 conditions, 6085 events. 3813/6085 cut-off events. For 1055037/1055040 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 37465 event pairs, 755 based on Foata normal form. 4/6082 useless extension candidates. Maximal degree in co-relation 56765. Up to 5511 conditions per place. [2024-06-27 20:07:08,588 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 352 selfloop transitions, 127 changer transitions 0/483 dead transitions. [2024-06-27 20:07:08,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 483 transitions, 7030 flow [2024-06-27 20:07:08,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:08,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 20:07:08,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-27 20:07:08,589 INFO L175 Difference]: Start difference. First operand has 354 places, 458 transitions, 5384 flow. Second operand 8 states and 142 transitions. [2024-06-27 20:07:08,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 483 transitions, 7030 flow [2024-06-27 20:07:12,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 483 transitions, 6885 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 20:07:12,224 INFO L231 Difference]: Finished difference. Result has 358 places, 464 transitions, 5663 flow [2024-06-27 20:07:12,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5239, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5663, PETRI_PLACES=358, PETRI_TRANSITIONS=464} [2024-06-27 20:07:12,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-27 20:07:12,224 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 464 transitions, 5663 flow [2024-06-27 20:07:12,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:12,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:12,225 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 20:07:12,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:07:12,225 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:12,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1275329601, now seen corresponding path program 6 times [2024-06-27 20:07:12,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:12,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007895168] [2024-06-27 20:07:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:12,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:12,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007895168] [2024-06-27 20:07:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007895168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:12,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:12,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635676343] [2024-06-27 20:07:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:12,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:12,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 464 transitions, 5663 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:12,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:12,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:12,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:14,245 INFO L124 PetriNetUnfolderBase]: 3807/6077 cut-off events. [2024-06-27 20:07:14,245 INFO L125 PetriNetUnfolderBase]: For 1063071/1063074 co-relation queries the response was YES. [2024-06-27 20:07:14,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56963 conditions, 6077 events. 3807/6077 cut-off events. For 1063071/1063074 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 37412 event pairs, 757 based on Foata normal form. 4/6074 useless extension candidates. Maximal degree in co-relation 56798. Up to 5651 conditions per place. [2024-06-27 20:07:14,331 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 389 selfloop transitions, 89 changer transitions 0/482 dead transitions. [2024-06-27 20:07:14,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 482 transitions, 6929 flow [2024-06-27 20:07:14,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:14,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 20:07:14,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-27 20:07:14,333 INFO L175 Difference]: Start difference. First operand has 358 places, 464 transitions, 5663 flow. Second operand 8 states and 142 transitions. [2024-06-27 20:07:14,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 482 transitions, 6929 flow [2024-06-27 20:07:17,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 482 transitions, 6678 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 20:07:17,774 INFO L231 Difference]: Finished difference. Result has 362 places, 464 transitions, 5596 flow [2024-06-27 20:07:17,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5412, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5596, PETRI_PLACES=362, PETRI_TRANSITIONS=464} [2024-06-27 20:07:17,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-06-27 20:07:17,775 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 464 transitions, 5596 flow [2024-06-27 20:07:17,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:17,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:17,775 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 20:07:17,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:07:17,775 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:17,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1275092637, now seen corresponding path program 9 times [2024-06-27 20:07:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128553729] [2024-06-27 20:07:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:18,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:18,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128553729] [2024-06-27 20:07:18,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128553729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:18,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:18,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:18,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450861439] [2024-06-27 20:07:18,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:18,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:18,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:18,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:18,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:18,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:18,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 464 transitions, 5596 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:18,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:18,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:18,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:19,695 INFO L124 PetriNetUnfolderBase]: 3801/6063 cut-off events. [2024-06-27 20:07:19,696 INFO L125 PetriNetUnfolderBase]: For 1069145/1069148 co-relation queries the response was YES. [2024-06-27 20:07:19,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56612 conditions, 6063 events. 3801/6063 cut-off events. For 1069145/1069148 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 37272 event pairs, 755 based on Foata normal form. 4/6060 useless extension candidates. Maximal degree in co-relation 56446. Up to 5498 conditions per place. [2024-06-27 20:07:19,787 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 350 selfloop transitions, 128 changer transitions 0/482 dead transitions. [2024-06-27 20:07:19,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 482 transitions, 6864 flow [2024-06-27 20:07:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 20:07:19,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-27 20:07:19,788 INFO L175 Difference]: Start difference. First operand has 362 places, 464 transitions, 5596 flow. Second operand 8 states and 141 transitions. [2024-06-27 20:07:19,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 482 transitions, 6864 flow [2024-06-27 20:07:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 482 transitions, 6709 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 20:07:23,220 INFO L231 Difference]: Finished difference. Result has 366 places, 464 transitions, 5703 flow [2024-06-27 20:07:23,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5441, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5703, PETRI_PLACES=366, PETRI_TRANSITIONS=464} [2024-06-27 20:07:23,221 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-27 20:07:23,221 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 464 transitions, 5703 flow [2024-06-27 20:07:23,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:23,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:23,221 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 20:07:23,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:07:23,221 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:23,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 62544455, now seen corresponding path program 10 times [2024-06-27 20:07:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:23,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275251331] [2024-06-27 20:07:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:23,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:23,784 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 20:07:23,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:23,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275251331] [2024-06-27 20:07:23,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275251331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:23,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:23,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:23,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902907511] [2024-06-27 20:07:23,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:23,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:23,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:23,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:23,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:23,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:23,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 464 transitions, 5703 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:23,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:23,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:23,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:25,166 INFO L124 PetriNetUnfolderBase]: 3811/6083 cut-off events. [2024-06-27 20:07:25,167 INFO L125 PetriNetUnfolderBase]: For 1089129/1089132 co-relation queries the response was YES. [2024-06-27 20:07:25,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57048 conditions, 6083 events. 3811/6083 cut-off events. For 1089129/1089132 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 37484 event pairs, 746 based on Foata normal form. 4/6080 useless extension candidates. Maximal degree in co-relation 56881. Up to 5819 conditions per place. [2024-06-27 20:07:25,252 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 429 selfloop transitions, 48 changer transitions 0/481 dead transitions. [2024-06-27 20:07:25,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 481 transitions, 7038 flow [2024-06-27 20:07:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 20:07:25,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-27 20:07:25,253 INFO L175 Difference]: Start difference. First operand has 366 places, 464 transitions, 5703 flow. Second operand 8 states and 133 transitions. [2024-06-27 20:07:25,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 481 transitions, 7038 flow [2024-06-27 20:07:28,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 481 transitions, 6756 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:07:28,622 INFO L231 Difference]: Finished difference. Result has 367 places, 467 transitions, 5614 flow [2024-06-27 20:07:28,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5427, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5614, PETRI_PLACES=367, PETRI_TRANSITIONS=467} [2024-06-27 20:07:28,623 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-27 20:07:28,623 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 467 transitions, 5614 flow [2024-06-27 20:07:28,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:28,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:28,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:07:28,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:07:28,623 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:28,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1035145571, now seen corresponding path program 7 times [2024-06-27 20:07:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704147178] [2024-06-27 20:07:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:29,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:29,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704147178] [2024-06-27 20:07:29,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704147178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:29,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:29,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394520058] [2024-06-27 20:07:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:29,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:29,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:29,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:29,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:29,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 467 transitions, 5614 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:29,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:29,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:29,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:30,830 INFO L124 PetriNetUnfolderBase]: 3821/6101 cut-off events. [2024-06-27 20:07:30,830 INFO L125 PetriNetUnfolderBase]: For 1105766/1105769 co-relation queries the response was YES. [2024-06-27 20:07:30,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57009 conditions, 6101 events. 3821/6101 cut-off events. For 1105766/1105769 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 37613 event pairs, 755 based on Foata normal form. 4/6098 useless extension candidates. Maximal degree in co-relation 56841. Up to 5806 conditions per place. [2024-06-27 20:07:30,909 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 423 selfloop transitions, 58 changer transitions 0/485 dead transitions. [2024-06-27 20:07:30,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 485 transitions, 7136 flow [2024-06-27 20:07:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 20:07:30,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:07:30,911 INFO L175 Difference]: Start difference. First operand has 367 places, 467 transitions, 5614 flow. Second operand 8 states and 136 transitions. [2024-06-27 20:07:30,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 485 transitions, 7136 flow [2024-06-27 20:07:34,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 485 transitions, 6830 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 20:07:34,371 INFO L231 Difference]: Finished difference. Result has 368 places, 470 transitions, 5474 flow [2024-06-27 20:07:34,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5308, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5474, PETRI_PLACES=368, PETRI_TRANSITIONS=470} [2024-06-27 20:07:34,371 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-27 20:07:34,371 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 470 transitions, 5474 flow [2024-06-27 20:07:34,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:34,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:34,372 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 20:07:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:07:34,372 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:34,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1103018647, now seen corresponding path program 8 times [2024-06-27 20:07:34,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:34,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015476395] [2024-06-27 20:07:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015476395] [2024-06-27 20:07:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015476395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:35,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612868416] [2024-06-27 20:07:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:35,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:35,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:35,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 470 transitions, 5474 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:35,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:35,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:35,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:36,694 INFO L124 PetriNetUnfolderBase]: 3847/6133 cut-off events. [2024-06-27 20:07:36,694 INFO L125 PetriNetUnfolderBase]: For 1135167/1135170 co-relation queries the response was YES. [2024-06-27 20:07:36,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57314 conditions, 6133 events. 3847/6133 cut-off events. For 1135167/1135170 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37743 event pairs, 757 based on Foata normal form. 4/6130 useless extension candidates. Maximal degree in co-relation 57146. Up to 5891 conditions per place. [2024-06-27 20:07:36,769 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 442 selfloop transitions, 44 changer transitions 0/490 dead transitions. [2024-06-27 20:07:36,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 490 transitions, 6850 flow [2024-06-27 20:07:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 20:07:36,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024390243902439 [2024-06-27 20:07:36,770 INFO L175 Difference]: Start difference. First operand has 368 places, 470 transitions, 5474 flow. Second operand 8 states and 132 transitions. [2024-06-27 20:07:36,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 490 transitions, 6850 flow [2024-06-27 20:07:40,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 490 transitions, 6594 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 20:07:40,816 INFO L231 Difference]: Finished difference. Result has 371 places, 477 transitions, 5463 flow [2024-06-27 20:07:40,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5463, PETRI_PLACES=371, PETRI_TRANSITIONS=477} [2024-06-27 20:07:40,817 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 329 predicate places. [2024-06-27 20:07:40,817 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 477 transitions, 5463 flow [2024-06-27 20:07:40,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:40,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:40,817 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 20:07:40,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:07:40,817 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:40,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 409622553, now seen corresponding path program 9 times [2024-06-27 20:07:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:40,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292441158] [2024-06-27 20:07:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:40,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:41,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:41,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292441158] [2024-06-27 20:07:41,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292441158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:41,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:41,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493569583] [2024-06-27 20:07:41,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:41,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:41,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:41,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:41,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 477 transitions, 5463 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:41,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:41,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:42,927 INFO L124 PetriNetUnfolderBase]: 3857/6149 cut-off events. [2024-06-27 20:07:42,928 INFO L125 PetriNetUnfolderBase]: For 1152168/1152171 co-relation queries the response was YES. [2024-06-27 20:07:42,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57503 conditions, 6149 events. 3857/6149 cut-off events. For 1152168/1152171 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37859 event pairs, 761 based on Foata normal form. 4/6146 useless extension candidates. Maximal degree in co-relation 57333. Up to 5925 conditions per place. [2024-06-27 20:07:43,021 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 451 selfloop transitions, 37 changer transitions 0/492 dead transitions. [2024-06-27 20:07:43,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 492 transitions, 6552 flow [2024-06-27 20:07:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:43,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:07:43,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-27 20:07:43,022 INFO L175 Difference]: Start difference. First operand has 371 places, 477 transitions, 5463 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:07:43,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 492 transitions, 6552 flow [2024-06-27 20:07:47,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 492 transitions, 6416 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 20:07:47,279 INFO L231 Difference]: Finished difference. Result has 373 places, 481 transitions, 5486 flow [2024-06-27 20:07:47,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5340, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5486, PETRI_PLACES=373, PETRI_TRANSITIONS=481} [2024-06-27 20:07:47,279 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-27 20:07:47,279 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 481 transitions, 5486 flow [2024-06-27 20:07:47,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:47,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:47,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:07:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:07:47,280 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:47,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:47,280 INFO L85 PathProgramCache]: Analyzing trace with hash 858014051, now seen corresponding path program 10 times [2024-06-27 20:07:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042957218] [2024-06-27 20:07:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:47,944 INFO 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 20:07:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:47,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042957218] [2024-06-27 20:07:47,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042957218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:47,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150877761] [2024-06-27 20:07:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:47,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:48,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:48,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 481 transitions, 5486 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:48,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:48,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:48,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:49,380 INFO L124 PetriNetUnfolderBase]: 3851/6141 cut-off events. [2024-06-27 20:07:49,380 INFO L125 PetriNetUnfolderBase]: For 1157787/1157790 co-relation queries the response was YES. [2024-06-27 20:07:49,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57286 conditions, 6141 events. 3851/6141 cut-off events. For 1157787/1157790 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37825 event pairs, 756 based on Foata normal form. 4/6138 useless extension candidates. Maximal degree in co-relation 57116. Up to 5894 conditions per place. [2024-06-27 20:07:49,478 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 446 selfloop transitions, 44 changer transitions 0/494 dead transitions. [2024-06-27 20:07:49,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 494 transitions, 6750 flow [2024-06-27 20:07:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 20:07:49,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054878048780488 [2024-06-27 20:07:49,479 INFO L175 Difference]: Start difference. First operand has 373 places, 481 transitions, 5486 flow. Second operand 8 states and 133 transitions. [2024-06-27 20:07:49,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 494 transitions, 6750 flow [2024-06-27 20:07:53,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 494 transitions, 6660 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 20:07:53,465 INFO L231 Difference]: Finished difference. Result has 376 places, 481 transitions, 5490 flow [2024-06-27 20:07:53,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5396, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5490, PETRI_PLACES=376, PETRI_TRANSITIONS=481} [2024-06-27 20:07:53,465 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 334 predicate places. [2024-06-27 20:07:53,465 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 481 transitions, 5490 flow [2024-06-27 20:07:53,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:53,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:53,466 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 20:07:53,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:07:53,466 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:53,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:53,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1109690653, now seen corresponding path program 11 times [2024-06-27 20:07:53,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:53,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879420658] [2024-06-27 20:07:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:53,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:07:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:07:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:07:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879420658] [2024-06-27 20:07:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879420658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:07:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:07:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:07:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728307981] [2024-06-27 20:07:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:07:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:07:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:07:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:07:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:07:54,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:07:54,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 481 transitions, 5490 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:54,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:07:54,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:07:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:07:55,546 INFO L124 PetriNetUnfolderBase]: 3845/6145 cut-off events. [2024-06-27 20:07:55,546 INFO L125 PetriNetUnfolderBase]: For 1163898/1163901 co-relation queries the response was YES. [2024-06-27 20:07:55,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57178 conditions, 6145 events. 3845/6145 cut-off events. For 1163898/1163901 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38004 event pairs, 755 based on Foata normal form. 4/6142 useless extension candidates. Maximal degree in co-relation 57007. Up to 5870 conditions per place. [2024-06-27 20:07:55,638 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 445 selfloop transitions, 46 changer transitions 0/495 dead transitions. [2024-06-27 20:07:55,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 495 transitions, 6772 flow [2024-06-27 20:07:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:07:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:07:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 20:07:55,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40853658536585363 [2024-06-27 20:07:55,639 INFO L175 Difference]: Start difference. First operand has 376 places, 481 transitions, 5490 flow. Second operand 8 states and 134 transitions. [2024-06-27 20:07:55,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 495 transitions, 6772 flow [2024-06-27 20:07:59,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 495 transitions, 6527 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 20:07:59,669 INFO L231 Difference]: Finished difference. Result has 377 places, 481 transitions, 5343 flow [2024-06-27 20:07:59,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5245, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5343, PETRI_PLACES=377, PETRI_TRANSITIONS=481} [2024-06-27 20:07:59,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 20:07:59,670 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 481 transitions, 5343 flow [2024-06-27 20:07:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:07:59,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:07:59,670 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 20:07:59,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:07:59,671 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:07:59,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:07:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1035561281, now seen corresponding path program 11 times [2024-06-27 20:07:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:07:59,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949299438] [2024-06-27 20:07:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:07:59,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:07:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:00,296 INFO 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 20:08:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:00,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949299438] [2024-06-27 20:08:00,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949299438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:00,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:00,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:08:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969696451] [2024-06-27 20:08:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:00,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:08:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:08:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:08:00,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:08:00,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 481 transitions, 5343 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:00,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:00,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:08:00,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:01,729 INFO L124 PetriNetUnfolderBase]: 3839/6131 cut-off events. [2024-06-27 20:08:01,730 INFO L125 PetriNetUnfolderBase]: For 1167646/1167649 co-relation queries the response was YES. [2024-06-27 20:08:01,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56823 conditions, 6131 events. 3839/6131 cut-off events. For 1167646/1167649 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37860 event pairs, 746 based on Foata normal form. 4/6128 useless extension candidates. Maximal degree in co-relation 56652. Up to 5823 conditions per place. [2024-06-27 20:08:01,825 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 421 selfloop transitions, 70 changer transitions 0/495 dead transitions. [2024-06-27 20:08:01,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 495 transitions, 6627 flow [2024-06-27 20:08:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:08:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:08:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:08:01,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2024-06-27 20:08:01,826 INFO L175 Difference]: Start difference. First operand has 377 places, 481 transitions, 5343 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:08:01,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 495 transitions, 6627 flow [2024-06-27 20:08:05,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 495 transitions, 6439 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:08:05,452 INFO L231 Difference]: Finished difference. Result has 378 places, 481 transitions, 5301 flow [2024-06-27 20:08:05,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5301, PETRI_PLACES=378, PETRI_TRANSITIONS=481} [2024-06-27 20:08:05,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-27 20:08:05,453 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 481 transitions, 5301 flow [2024-06-27 20:08:05,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:05,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:05,453 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 20:08:05,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:08:05,453 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:05,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 857893709, now seen corresponding path program 4 times [2024-06-27 20:08:05,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:05,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593922990] [2024-06-27 20:08:05,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:05,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:06,228 INFO 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 20:08:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593922990] [2024-06-27 20:08:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593922990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:06,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:06,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:08:06,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978405659] [2024-06-27 20:08:06,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:08:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:08:06,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:08:06,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:08:06,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 481 transitions, 5301 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:06,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:06,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:08:06,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:07,678 INFO L124 PetriNetUnfolderBase]: 3836/6119 cut-off events. [2024-06-27 20:08:07,678 INFO L125 PetriNetUnfolderBase]: For 1167837/1167837 co-relation queries the response was YES. [2024-06-27 20:08:07,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56318 conditions, 6119 events. 3836/6119 cut-off events. For 1167837/1167837 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 37673 event pairs, 764 based on Foata normal form. 1/6112 useless extension candidates. Maximal degree in co-relation 56147. Up to 5879 conditions per place. [2024-06-27 20:08:07,777 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 455 selfloop transitions, 33 changer transitions 0/492 dead transitions. [2024-06-27 20:08:07,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 492 transitions, 6307 flow [2024-06-27 20:08:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:08:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:08:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:08:07,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-27 20:08:07,778 INFO L175 Difference]: Start difference. First operand has 378 places, 481 transitions, 5301 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:08:07,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 492 transitions, 6307 flow [2024-06-27 20:08:11,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 492 transitions, 6125 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 20:08:11,444 INFO L231 Difference]: Finished difference. Result has 379 places, 481 transitions, 5191 flow [2024-06-27 20:08:11,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5119, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5191, PETRI_PLACES=379, PETRI_TRANSITIONS=481} [2024-06-27 20:08:11,444 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 337 predicate places. [2024-06-27 20:08:11,445 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 481 transitions, 5191 flow [2024-06-27 20:08:11,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:11,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:11,445 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 20:08:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:08:11,445 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:11,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash 9887907, now seen corresponding path program 12 times [2024-06-27 20:08:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389110697] [2024-06-27 20:08:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:12,004 INFO 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 20:08:12,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:12,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389110697] [2024-06-27 20:08:12,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389110697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:12,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:12,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:08:12,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621634405] [2024-06-27 20:08:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:08:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:12,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:08:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:08:12,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:08:12,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 481 transitions, 5191 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:12,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:12,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:08:12,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:13,434 INFO L124 PetriNetUnfolderBase]: 3830/6115 cut-off events. [2024-06-27 20:08:13,434 INFO L125 PetriNetUnfolderBase]: For 1178988/1178991 co-relation queries the response was YES. [2024-06-27 20:08:13,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55983 conditions, 6115 events. 3830/6115 cut-off events. For 1178988/1178991 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37718 event pairs, 751 based on Foata normal form. 4/6112 useless extension candidates. Maximal degree in co-relation 55812. Up to 5893 conditions per place. [2024-06-27 20:08:13,527 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 460 selfloop transitions, 29 changer transitions 0/493 dead transitions. [2024-06-27 20:08:13,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 493 transitions, 6223 flow [2024-06-27 20:08:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:08:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:08:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:08:13,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-27 20:08:13,528 INFO L175 Difference]: Start difference. First operand has 379 places, 481 transitions, 5191 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:08:13,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 493 transitions, 6223 flow [2024-06-27 20:08:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 493 transitions, 6056 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 20:08:18,079 INFO L231 Difference]: Finished difference. Result has 378 places, 481 transitions, 5088 flow [2024-06-27 20:08:18,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5024, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5088, PETRI_PLACES=378, PETRI_TRANSITIONS=481} [2024-06-27 20:08:18,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-27 20:08:18,080 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 481 transitions, 5088 flow [2024-06-27 20:08:18,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:18,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:18,080 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 20:08:18,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:08:18,080 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:18,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash 858251201, now seen corresponding path program 12 times [2024-06-27 20:08:18,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:18,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574477535] [2024-06-27 20:08:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:18,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:18,603 INFO 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 20:08:18,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574477535] [2024-06-27 20:08:18,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574477535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:18,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:18,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:08:18,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539105900] [2024-06-27 20:08:18,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:18,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:08:18,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:18,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:08:18,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:08:18,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:08:18,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 481 transitions, 5088 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:18,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:18,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:08:18,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:20,028 INFO L124 PetriNetUnfolderBase]: 3824/6109 cut-off events. [2024-06-27 20:08:20,029 INFO L125 PetriNetUnfolderBase]: For 1182790/1182793 co-relation queries the response was YES. [2024-06-27 20:08:20,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55720 conditions, 6109 events. 3824/6109 cut-off events. For 1182790/1182793 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 37725 event pairs, 756 based on Foata normal form. 4/6106 useless extension candidates. Maximal degree in co-relation 55549. Up to 5881 conditions per place. [2024-06-27 20:08:20,119 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 452 selfloop transitions, 36 changer transitions 0/492 dead transitions. [2024-06-27 20:08:20,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 492 transitions, 6104 flow [2024-06-27 20:08:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:08:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:08:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 20:08:20,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39634146341463417 [2024-06-27 20:08:20,120 INFO L175 Difference]: Start difference. First operand has 378 places, 481 transitions, 5088 flow. Second operand 8 states and 130 transitions. [2024-06-27 20:08:20,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 492 transitions, 6104 flow [2024-06-27 20:08:24,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 492 transitions, 5946 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 20:08:24,164 INFO L231 Difference]: Finished difference. Result has 377 places, 481 transitions, 5008 flow [2024-06-27 20:08:24,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4930, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5008, PETRI_PLACES=377, PETRI_TRANSITIONS=481} [2024-06-27 20:08:24,165 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 20:08:24,165 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 481 transitions, 5008 flow [2024-06-27 20:08:24,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:24,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:24,166 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 20:08:24,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:08:24,166 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:24,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:24,166 INFO L85 PathProgramCache]: Analyzing trace with hash 857890733, now seen corresponding path program 4 times [2024-06-27 20:08:24,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:24,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964852886] [2024-06-27 20:08:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:24,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:24,945 INFO 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 20:08:24,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964852886] [2024-06-27 20:08:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964852886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:24,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:08:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300601183] [2024-06-27 20:08:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:08:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:08:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:08:25,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:08:25,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 481 transitions, 5008 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:08:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:26,448 INFO L124 PetriNetUnfolderBase]: 3819/6094 cut-off events. [2024-06-27 20:08:26,448 INFO L125 PetriNetUnfolderBase]: For 1186440/1186440 co-relation queries the response was YES. [2024-06-27 20:08:26,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55539 conditions, 6094 events. 3819/6094 cut-off events. For 1186440/1186440 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 37524 event pairs, 764 based on Foata normal form. 2/6088 useless extension candidates. Maximal degree in co-relation 55367. Up to 5853 conditions per place. [2024-06-27 20:08:26,533 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 457 selfloop transitions, 32 changer transitions 0/493 dead transitions. [2024-06-27 20:08:26,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 493 transitions, 6018 flow [2024-06-27 20:08:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:08:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:08:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:08:26,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-06-27 20:08:26,535 INFO L175 Difference]: Start difference. First operand has 377 places, 481 transitions, 5008 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:08:26,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 493 transitions, 6018 flow [2024-06-27 20:08:29,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 493 transitions, 5892 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:08:29,878 INFO L231 Difference]: Finished difference. Result has 377 places, 481 transitions, 4951 flow [2024-06-27 20:08:29,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4951, PETRI_PLACES=377, PETRI_TRANSITIONS=481} [2024-06-27 20:08:29,878 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 20:08:29,878 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 481 transitions, 4951 flow [2024-06-27 20:08:29,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:29,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:29,879 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 20:08:29,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:08:29,879 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:29,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1802422843, now seen corresponding path program 1 times [2024-06-27 20:08:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726492481] [2024-06-27 20:08:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:29,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:30,714 INFO 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 20:08:30,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:30,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726492481] [2024-06-27 20:08:30,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726492481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:08:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454027444] [2024-06-27 20:08:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:08:30,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:08:30,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:08:30,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:08:30,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 481 transitions, 4951 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:30,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:30,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:08:30,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:32,254 INFO L124 PetriNetUnfolderBase]: 3692/5976 cut-off events. [2024-06-27 20:08:32,254 INFO L125 PetriNetUnfolderBase]: For 1043128/1043138 co-relation queries the response was YES. [2024-06-27 20:08:32,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52477 conditions, 5976 events. 3692/5976 cut-off events. For 1043128/1043138 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 37636 event pairs, 776 based on Foata normal form. 2/5965 useless extension candidates. Maximal degree in co-relation 52304. Up to 5619 conditions per place. [2024-06-27 20:08:32,340 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 459 selfloop transitions, 26 changer transitions 0/512 dead transitions. [2024-06-27 20:08:32,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 512 transitions, 6367 flow [2024-06-27 20:08:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:08:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:08:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 20:08:32,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268292682926829 [2024-06-27 20:08:32,341 INFO L175 Difference]: Start difference. First operand has 377 places, 481 transitions, 4951 flow. Second operand 10 states and 175 transitions. [2024-06-27 20:08:32,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 512 transitions, 6367 flow [2024-06-27 20:08:36,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 512 transitions, 6284 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:08:36,267 INFO L231 Difference]: Finished difference. Result has 380 places, 485 transitions, 5057 flow [2024-06-27 20:08:36,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5057, PETRI_PLACES=380, PETRI_TRANSITIONS=485} [2024-06-27 20:08:36,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-27 20:08:36,268 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 485 transitions, 5057 flow [2024-06-27 20:08:36,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:36,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:36,268 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 20:08:36,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:08:36,268 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:36,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:36,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1688858683, now seen corresponding path program 2 times [2024-06-27 20:08:36,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:36,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910259576] [2024-06-27 20:08:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:08:37,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:37,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910259576] [2024-06-27 20:08:37,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910259576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:37,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:08:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445715469] [2024-06-27 20:08:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:08:37,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:08:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:08:37,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:08:37,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 485 transitions, 5057 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:37,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:37,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:08:37,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:38,952 INFO L124 PetriNetUnfolderBase]: 3687/5971 cut-off events. [2024-06-27 20:08:38,953 INFO L125 PetriNetUnfolderBase]: For 1045224/1045234 co-relation queries the response was YES. [2024-06-27 20:08:39,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52394 conditions, 5971 events. 3687/5971 cut-off events. For 1045224/1045234 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37604 event pairs, 809 based on Foata normal form. 2/5960 useless extension candidates. Maximal degree in co-relation 52220. Up to 5641 conditions per place. [2024-06-27 20:08:39,035 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 457 selfloop transitions, 23 changer transitions 0/507 dead transitions. [2024-06-27 20:08:39,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 507 transitions, 6079 flow [2024-06-27 20:08:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:08:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:08:39,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 20:08:39,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121951219512195 [2024-06-27 20:08:39,036 INFO L175 Difference]: Start difference. First operand has 380 places, 485 transitions, 5057 flow. Second operand 10 states and 169 transitions. [2024-06-27 20:08:39,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 507 transitions, 6079 flow [2024-06-27 20:08:42,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 507 transitions, 5935 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-27 20:08:42,854 INFO L231 Difference]: Finished difference. Result has 384 places, 485 transitions, 4964 flow [2024-06-27 20:08:42,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4913, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4964, PETRI_PLACES=384, PETRI_TRANSITIONS=485} [2024-06-27 20:08:42,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-27 20:08:42,855 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 485 transitions, 4964 flow [2024-06-27 20:08:42,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:42,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:42,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:08:42,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:08:42,855 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:42,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:42,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1802362269, now seen corresponding path program 1 times [2024-06-27 20:08:42,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:42,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555792364] [2024-06-27 20:08:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:42,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:43,674 INFO 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 20:08:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:43,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555792364] [2024-06-27 20:08:43,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555792364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:43,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:43,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:08:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426332256] [2024-06-27 20:08:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:43,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:08:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:08:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:08:43,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:08:43,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 485 transitions, 4964 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:43,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:43,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:08:43,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:45,372 INFO L124 PetriNetUnfolderBase]: 3708/6001 cut-off events. [2024-06-27 20:08:45,372 INFO L125 PetriNetUnfolderBase]: For 1070108/1070118 co-relation queries the response was YES. [2024-06-27 20:08:45,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52779 conditions, 6001 events. 3708/6001 cut-off events. For 1070108/1070118 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 37826 event pairs, 810 based on Foata normal form. 2/5990 useless extension candidates. Maximal degree in co-relation 52603. Up to 5661 conditions per place. [2024-06-27 20:08:45,456 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 458 selfloop transitions, 27 changer transitions 0/512 dead transitions. [2024-06-27 20:08:45,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 512 transitions, 6076 flow [2024-06-27 20:08:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:08:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:08:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 20:08:45,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41019955654101997 [2024-06-27 20:08:45,457 INFO L175 Difference]: Start difference. First operand has 384 places, 485 transitions, 4964 flow. Second operand 11 states and 185 transitions. [2024-06-27 20:08:45,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 512 transitions, 6076 flow [2024-06-27 20:08:49,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 512 transitions, 6025 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:08:49,380 INFO L231 Difference]: Finished difference. Result has 386 places, 488 transitions, 5052 flow [2024-06-27 20:08:49,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4913, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5052, PETRI_PLACES=386, PETRI_TRANSITIONS=488} [2024-06-27 20:08:49,380 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-27 20:08:49,380 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 488 transitions, 5052 flow [2024-06-27 20:08:49,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:49,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:49,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:08:49,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:08:49,381 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:49,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:49,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1274905955, now seen corresponding path program 2 times [2024-06-27 20:08:49,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:49,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6197033] [2024-06-27 20:08:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:49,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:08:50,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:50,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6197033] [2024-06-27 20:08:50,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6197033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:50,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:50,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:08:50,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423779607] [2024-06-27 20:08:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:08:50,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:08:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:08:50,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:08:50,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 488 transitions, 5052 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:50,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:50,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:08:50,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:51,831 INFO L124 PetriNetUnfolderBase]: 3718/6015 cut-off events. [2024-06-27 20:08:51,832 INFO L125 PetriNetUnfolderBase]: For 1087846/1087856 co-relation queries the response was YES. [2024-06-27 20:08:51,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53516 conditions, 6015 events. 3718/6015 cut-off events. For 1087846/1087856 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37953 event pairs, 810 based on Foata normal form. 2/6004 useless extension candidates. Maximal degree in co-relation 53339. Up to 5609 conditions per place. [2024-06-27 20:08:51,914 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 422 selfloop transitions, 60 changer transitions 0/509 dead transitions. [2024-06-27 20:08:51,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 509 transitions, 6148 flow [2024-06-27 20:08:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:08:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:08:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:08:51,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-27 20:08:51,916 INFO L175 Difference]: Start difference. First operand has 386 places, 488 transitions, 5052 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:08:51,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 509 transitions, 6148 flow [2024-06-27 20:08:55,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 509 transitions, 6033 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 20:08:55,777 INFO L231 Difference]: Finished difference. Result has 386 places, 491 transitions, 5147 flow [2024-06-27 20:08:55,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5147, PETRI_PLACES=386, PETRI_TRANSITIONS=491} [2024-06-27 20:08:55,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 344 predicate places. [2024-06-27 20:08:55,777 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 491 transitions, 5147 flow [2024-06-27 20:08:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:55,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:08:55,778 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 20:08:55,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:08:55,778 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:08:55,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:08:55,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1684269939, now seen corresponding path program 3 times [2024-06-27 20:08:55,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:08:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159531691] [2024-06-27 20:08:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:08:55,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:08:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:08:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:08:56,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:08:56,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159531691] [2024-06-27 20:08:56,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159531691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:08:56,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:08:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:08:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906601932] [2024-06-27 20:08:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:08:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:08:56,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:08:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:08:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:08:56,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:08:56,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 491 transitions, 5147 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:08:56,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:08:56,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:08:56,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:08:58,059 INFO L124 PetriNetUnfolderBase]: 3717/6017 cut-off events. [2024-06-27 20:08:58,060 INFO L125 PetriNetUnfolderBase]: For 1097501/1097511 co-relation queries the response was YES. [2024-06-27 20:08:58,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53945 conditions, 6017 events. 3717/6017 cut-off events. For 1097501/1097511 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 37969 event pairs, 808 based on Foata normal form. 2/6006 useless extension candidates. Maximal degree in co-relation 53767. Up to 5607 conditions per place. [2024-06-27 20:08:58,137 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 427 selfloop transitions, 59 changer transitions 0/513 dead transitions. [2024-06-27 20:08:58,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 513 transitions, 6261 flow [2024-06-27 20:08:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:08:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:08:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 20:08:58,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 20:08:58,138 INFO L175 Difference]: Start difference. First operand has 386 places, 491 transitions, 5147 flow. Second operand 9 states and 162 transitions. [2024-06-27 20:08:58,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 513 transitions, 6261 flow [2024-06-27 20:09:02,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 513 transitions, 6073 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:02,668 INFO L231 Difference]: Finished difference. Result has 388 places, 494 transitions, 5173 flow [2024-06-27 20:09:02,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4959, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5173, PETRI_PLACES=388, PETRI_TRANSITIONS=494} [2024-06-27 20:09:02,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-27 20:09:02,669 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 494 transitions, 5173 flow [2024-06-27 20:09:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:02,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:02,670 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 20:09:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:09:02,670 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:02,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1275083585, now seen corresponding path program 4 times [2024-06-27 20:09:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144882294] [2024-06-27 20:09:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:09:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144882294] [2024-06-27 20:09:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144882294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:03,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052904220] [2024-06-27 20:09:03,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:03,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:03,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:03,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 494 transitions, 5173 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:03,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:03,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:03,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:05,050 INFO L124 PetriNetUnfolderBase]: 3735/6042 cut-off events. [2024-06-27 20:09:05,050 INFO L125 PetriNetUnfolderBase]: For 1124223/1124233 co-relation queries the response was YES. [2024-06-27 20:09:05,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54854 conditions, 6042 events. 3735/6042 cut-off events. For 1124223/1124233 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 38141 event pairs, 810 based on Foata normal form. 2/6031 useless extension candidates. Maximal degree in co-relation 54675. Up to 5617 conditions per place. [2024-06-27 20:09:05,130 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 423 selfloop transitions, 68 changer transitions 0/518 dead transitions. [2024-06-27 20:09:05,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 518 transitions, 6309 flow [2024-06-27 20:09:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:09:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:09:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 20:09:05,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43414634146341463 [2024-06-27 20:09:05,132 INFO L175 Difference]: Start difference. First operand has 388 places, 494 transitions, 5173 flow. Second operand 10 states and 178 transitions. [2024-06-27 20:09:05,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 518 transitions, 6309 flow [2024-06-27 20:09:09,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 518 transitions, 6117 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:09,316 INFO L231 Difference]: Finished difference. Result has 391 places, 497 transitions, 5223 flow [2024-06-27 20:09:09,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4981, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5223, PETRI_PLACES=391, PETRI_TRANSITIONS=497} [2024-06-27 20:09:09,317 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 20:09:09,317 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 497 transitions, 5223 flow [2024-06-27 20:09:09,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:09,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:09,317 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 20:09:09,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:09:09,317 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:09,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1275083709, now seen corresponding path program 3 times [2024-06-27 20:09:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007732252] [2024-06-27 20:09:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:09,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:09:10,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:10,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007732252] [2024-06-27 20:09:10,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007732252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:10,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:10,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:10,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665813573] [2024-06-27 20:09:10,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:10,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:10,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:10,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:10,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 497 transitions, 5223 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:10,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:10,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:11,914 INFO L124 PetriNetUnfolderBase]: 3743/6054 cut-off events. [2024-06-27 20:09:11,914 INFO L125 PetriNetUnfolderBase]: For 1142663/1142673 co-relation queries the response was YES. [2024-06-27 20:09:11,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55492 conditions, 6054 events. 3743/6054 cut-off events. For 1142663/1142673 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 38231 event pairs, 815 based on Foata normal form. 2/6043 useless extension candidates. Maximal degree in co-relation 55312. Up to 5718 conditions per place. [2024-06-27 20:09:11,999 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 455 selfloop transitions, 32 changer transitions 0/514 dead transitions. [2024-06-27 20:09:12,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 514 transitions, 6313 flow [2024-06-27 20:09:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:12,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:09:12,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:09:12,001 INFO L175 Difference]: Start difference. First operand has 391 places, 497 transitions, 5223 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:09:12,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 514 transitions, 6313 flow [2024-06-27 20:09:16,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 514 transitions, 6097 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 20:09:16,696 INFO L231 Difference]: Finished difference. Result has 392 places, 499 transitions, 5156 flow [2024-06-27 20:09:16,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5009, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5156, PETRI_PLACES=392, PETRI_TRANSITIONS=499} [2024-06-27 20:09:16,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-27 20:09:16,697 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 499 transitions, 5156 flow [2024-06-27 20:09:16,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:16,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:16,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:16,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:09:16,697 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:16,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:16,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1113322653, now seen corresponding path program 1 times [2024-06-27 20:09:16,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:16,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756212819] [2024-06-27 20:09:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:16,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:09:17,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:17,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756212819] [2024-06-27 20:09:17,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756212819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:17,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:17,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:17,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870350739] [2024-06-27 20:09:17,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:17,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:09:17,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 499 transitions, 5156 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:17,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:17,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:09:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:19,107 INFO L124 PetriNetUnfolderBase]: 3910/6229 cut-off events. [2024-06-27 20:09:19,107 INFO L125 PetriNetUnfolderBase]: For 1312268/1312268 co-relation queries the response was YES. [2024-06-27 20:09:19,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58604 conditions, 6229 events. 3910/6229 cut-off events. For 1312268/1312268 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 38506 event pairs, 870 based on Foata normal form. 1/6227 useless extension candidates. Maximal degree in co-relation 58423. Up to 6036 conditions per place. [2024-06-27 20:09:19,191 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 489 selfloop transitions, 23 changer transitions 0/516 dead transitions. [2024-06-27 20:09:19,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 516 transitions, 6319 flow [2024-06-27 20:09:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:09:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:09:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 20:09:19,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871951219512195 [2024-06-27 20:09:19,193 INFO L175 Difference]: Start difference. First operand has 392 places, 499 transitions, 5156 flow. Second operand 8 states and 127 transitions. [2024-06-27 20:09:19,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 516 transitions, 6319 flow [2024-06-27 20:09:24,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 516 transitions, 6188 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:24,082 INFO L231 Difference]: Finished difference. Result has 393 places, 505 transitions, 5202 flow [2024-06-27 20:09:24,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5202, PETRI_PLACES=393, PETRI_TRANSITIONS=505} [2024-06-27 20:09:24,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 351 predicate places. [2024-06-27 20:09:24,083 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 505 transitions, 5202 flow [2024-06-27 20:09:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:24,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:24,083 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 20:09:24,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:09:24,084 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:24,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1263470367, now seen corresponding path program 5 times [2024-06-27 20:09:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:24,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002587639] [2024-06-27 20:09:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:24,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:24,932 INFO 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 20:09:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:24,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002587639] [2024-06-27 20:09:24,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002587639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:24,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:24,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386478414] [2024-06-27 20:09:24,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:24,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:24,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:24,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:25,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 505 transitions, 5202 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:26,444 INFO L124 PetriNetUnfolderBase]: 3754/6071 cut-off events. [2024-06-27 20:09:26,444 INFO L125 PetriNetUnfolderBase]: For 1147206/1147216 co-relation queries the response was YES. [2024-06-27 20:09:26,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54998 conditions, 6071 events. 3754/6071 cut-off events. For 1147206/1147216 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 38396 event pairs, 807 based on Foata normal form. 3/6061 useless extension candidates. Maximal degree in co-relation 54816. Up to 5734 conditions per place. [2024-06-27 20:09:26,530 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 467 selfloop transitions, 28 changer transitions 0/522 dead transitions. [2024-06-27 20:09:26,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 522 transitions, 6328 flow [2024-06-27 20:09:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 20:09:26,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-27 20:09:26,532 INFO L175 Difference]: Start difference. First operand has 393 places, 505 transitions, 5202 flow. Second operand 9 states and 149 transitions. [2024-06-27 20:09:26,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 522 transitions, 6328 flow [2024-06-27 20:09:30,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 522 transitions, 6216 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:30,842 INFO L231 Difference]: Finished difference. Result has 396 places, 508 transitions, 5254 flow [2024-06-27 20:09:30,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5254, PETRI_PLACES=396, PETRI_TRANSITIONS=508} [2024-06-27 20:09:30,856 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 354 predicate places. [2024-06-27 20:09:30,856 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 508 transitions, 5254 flow [2024-06-27 20:09:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:30,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:30,857 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 20:09:30,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:09:30,857 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:30,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:30,864 INFO L85 PathProgramCache]: Analyzing trace with hash 187270279, now seen corresponding path program 6 times [2024-06-27 20:09:30,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:30,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833188333] [2024-06-27 20:09:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:30,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:09:31,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:31,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833188333] [2024-06-27 20:09:31,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833188333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:31,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:31,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:31,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211180398] [2024-06-27 20:09:31,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:31,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:31,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:31,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:31,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:31,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 508 transitions, 5254 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:31,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:31,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:31,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:33,410 INFO L124 PetriNetUnfolderBase]: 3764/6087 cut-off events. [2024-06-27 20:09:33,410 INFO L125 PetriNetUnfolderBase]: For 1160285/1160295 co-relation queries the response was YES. [2024-06-27 20:09:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55722 conditions, 6087 events. 3764/6087 cut-off events. For 1160285/1160295 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 38490 event pairs, 807 based on Foata normal form. 2/6076 useless extension candidates. Maximal degree in co-relation 55539. Up to 5723 conditions per place. [2024-06-27 20:09:33,496 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 456 selfloop transitions, 43 changer transitions 0/526 dead transitions. [2024-06-27 20:09:33,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 526 transitions, 6398 flow [2024-06-27 20:09:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:09:33,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:09:33,497 INFO L175 Difference]: Start difference. First operand has 396 places, 508 transitions, 5254 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:09:33,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 526 transitions, 6398 flow [2024-06-27 20:09:37,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 526 transitions, 6256 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:37,330 INFO L231 Difference]: Finished difference. Result has 398 places, 511 transitions, 5312 flow [2024-06-27 20:09:37,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5312, PETRI_PLACES=398, PETRI_TRANSITIONS=511} [2024-06-27 20:09:37,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 356 predicate places. [2024-06-27 20:09:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 511 transitions, 5312 flow [2024-06-27 20:09:37,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:37,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:37,331 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 20:09:37,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:09:37,332 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:37,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 187265629, now seen corresponding path program 7 times [2024-06-27 20:09:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820895861] [2024-06-27 20:09:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:09:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:38,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820895861] [2024-06-27 20:09:38,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820895861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:38,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:38,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:38,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592212019] [2024-06-27 20:09:38,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:38,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:38,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:38,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:38,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:38,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 511 transitions, 5312 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:38,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:38,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:38,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:39,770 INFO L124 PetriNetUnfolderBase]: 3782/6112 cut-off events. [2024-06-27 20:09:39,770 INFO L125 PetriNetUnfolderBase]: For 1186373/1186383 co-relation queries the response was YES. [2024-06-27 20:09:39,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56605 conditions, 6112 events. 3782/6112 cut-off events. For 1186373/1186383 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 38681 event pairs, 807 based on Foata normal form. 2/6101 useless extension candidates. Maximal degree in co-relation 56421. Up to 5717 conditions per place. [2024-06-27 20:09:39,855 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 453 selfloop transitions, 55 changer transitions 0/535 dead transitions. [2024-06-27 20:09:39,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 535 transitions, 6856 flow [2024-06-27 20:09:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:09:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:09:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 20:09:39,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:09:39,857 INFO L175 Difference]: Start difference. First operand has 398 places, 511 transitions, 5312 flow. Second operand 10 states and 170 transitions. [2024-06-27 20:09:39,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 535 transitions, 6856 flow [2024-06-27 20:09:43,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 535 transitions, 6678 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:43,950 INFO L231 Difference]: Finished difference. Result has 401 places, 517 transitions, 5476 flow [2024-06-27 20:09:43,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5134, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5476, PETRI_PLACES=401, PETRI_TRANSITIONS=517} [2024-06-27 20:09:43,950 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-27 20:09:43,951 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 517 transitions, 5476 flow [2024-06-27 20:09:43,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:43,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:43,951 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 20:09:43,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:09:43,951 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:43,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1035391463, now seen corresponding path program 4 times [2024-06-27 20:09:43,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146246116] [2024-06-27 20:09:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:43,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:44,734 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 20:09:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146246116] [2024-06-27 20:09:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146246116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:44,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893921903] [2024-06-27 20:09:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:44,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:44,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:44,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 517 transitions, 5476 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:44,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:44,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:44,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:46,306 INFO L124 PetriNetUnfolderBase]: 3777/6103 cut-off events. [2024-06-27 20:09:46,306 INFO L125 PetriNetUnfolderBase]: For 1190046/1190056 co-relation queries the response was YES. [2024-06-27 20:09:46,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56683 conditions, 6103 events. 3777/6103 cut-off events. For 1190046/1190056 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 38581 event pairs, 817 based on Foata normal form. 2/6092 useless extension candidates. Maximal degree in co-relation 56498. Up to 5792 conditions per place. [2024-06-27 20:09:46,388 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 484 selfloop transitions, 20 changer transitions 0/531 dead transitions. [2024-06-27 20:09:46,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 531 transitions, 6600 flow [2024-06-27 20:09:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 20:09:46,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2024-06-27 20:09:46,390 INFO L175 Difference]: Start difference. First operand has 401 places, 517 transitions, 5476 flow. Second operand 9 states and 146 transitions. [2024-06-27 20:09:46,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 531 transitions, 6600 flow [2024-06-27 20:09:50,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 531 transitions, 6434 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 20:09:50,753 INFO L231 Difference]: Finished difference. Result has 404 places, 519 transitions, 5445 flow [2024-06-27 20:09:50,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5310, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5445, PETRI_PLACES=404, PETRI_TRANSITIONS=519} [2024-06-27 20:09:50,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-27 20:09:50,753 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 519 transitions, 5445 flow [2024-06-27 20:09:50,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:50,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:50,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:50,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:09:50,754 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:50,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:50,754 INFO L85 PathProgramCache]: Analyzing trace with hash 187443259, now seen corresponding path program 8 times [2024-06-27 20:09:50,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:50,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271543454] [2024-06-27 20:09:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:50,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:51,570 INFO 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 20:09:51,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:51,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271543454] [2024-06-27 20:09:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271543454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116171155] [2024-06-27 20:09:51,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:51,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:51,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:51,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:51,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-27 20:09:51,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 519 transitions, 5445 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:51,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:51,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-27 20:09:51,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:09:53,107 INFO L124 PetriNetUnfolderBase]: 3763/6085 cut-off events. [2024-06-27 20:09:53,107 INFO L125 PetriNetUnfolderBase]: For 1182172/1182182 co-relation queries the response was YES. [2024-06-27 20:09:53,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56317 conditions, 6085 events. 3763/6085 cut-off events. For 1182172/1182182 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 38445 event pairs, 808 based on Foata normal form. 2/6074 useless extension candidates. Maximal degree in co-relation 56130. Up to 5724 conditions per place. [2024-06-27 20:09:53,191 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 467 selfloop transitions, 40 changer transitions 0/534 dead transitions. [2024-06-27 20:09:53,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 534 transitions, 6503 flow [2024-06-27 20:09:53,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:09:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:09:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:09:53,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-27 20:09:53,192 INFO L175 Difference]: Start difference. First operand has 404 places, 519 transitions, 5445 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:09:53,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 534 transitions, 6503 flow [2024-06-27 20:09:58,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 534 transitions, 6310 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-27 20:09:58,242 INFO L231 Difference]: Finished difference. Result has 406 places, 519 transitions, 5338 flow [2024-06-27 20:09:58,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5252, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5338, PETRI_PLACES=406, PETRI_TRANSITIONS=519} [2024-06-27 20:09:58,243 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-27 20:09:58,243 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 519 transitions, 5338 flow [2024-06-27 20:09:58,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:58,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:09:58,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:09:58,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:09:58,243 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:09:58,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:09:58,244 INFO L85 PathProgramCache]: Analyzing trace with hash -771500175, now seen corresponding path program 1 times [2024-06-27 20:09:58,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:09:58,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780660851] [2024-06-27 20:09:58,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:09:58,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:09:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:09:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:09:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:09:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780660851] [2024-06-27 20:09:59,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780660851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:09:59,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:09:59,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:09:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789539697] [2024-06-27 20:09:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:09:59,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:09:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:09:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:09:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:09:59,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:09:59,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 519 transitions, 5338 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:09:59,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:09:59,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:09:59,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:00,860 INFO L124 PetriNetUnfolderBase]: 3954/6291 cut-off events. [2024-06-27 20:10:00,861 INFO L125 PetriNetUnfolderBase]: For 1394244/1394244 co-relation queries the response was YES. [2024-06-27 20:10:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60501 conditions, 6291 events. 3954/6291 cut-off events. For 1394244/1394244 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 38754 event pairs, 766 based on Foata normal form. 1/6289 useless extension candidates. Maximal degree in co-relation 60313. Up to 6052 conditions per place. [2024-06-27 20:10:00,957 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 518 selfloop transitions, 28 changer transitions 0/550 dead transitions. [2024-06-27 20:10:00,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 550 transitions, 6618 flow [2024-06-27 20:10:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:10:00,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-27 20:10:00,959 INFO L175 Difference]: Start difference. First operand has 406 places, 519 transitions, 5338 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:10:00,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 550 transitions, 6618 flow [2024-06-27 20:10:06,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 550 transitions, 6520 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:10:06,501 INFO L231 Difference]: Finished difference. Result has 407 places, 522 transitions, 5412 flow [2024-06-27 20:10:06,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5240, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5412, PETRI_PLACES=407, PETRI_TRANSITIONS=522} [2024-06-27 20:10:06,504 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-27 20:10:06,504 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 522 transitions, 5412 flow [2024-06-27 20:10:06,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:06,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:06,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:10:06,505 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:10:06,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1676016479, now seen corresponding path program 2 times [2024-06-27 20:10:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104065641] [2024-06-27 20:10:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:07,450 INFO 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 20:10:07,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:07,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104065641] [2024-06-27 20:10:07,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104065641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:07,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:07,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784695279] [2024-06-27 20:10:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:07,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:07,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:07,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:07,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:10:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 522 transitions, 5412 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:07,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:07,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:10:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:09,065 INFO L124 PetriNetUnfolderBase]: 3959/6298 cut-off events. [2024-06-27 20:10:09,066 INFO L125 PetriNetUnfolderBase]: For 1417113/1417113 co-relation queries the response was YES. [2024-06-27 20:10:09,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61085 conditions, 6298 events. 3959/6298 cut-off events. For 1417113/1417113 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 38805 event pairs, 767 based on Foata normal form. 1/6296 useless extension candidates. Maximal degree in co-relation 60896. Up to 6014 conditions per place. [2024-06-27 20:10:09,167 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 495 selfloop transitions, 55 changer transitions 0/554 dead transitions. [2024-06-27 20:10:09,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 554 transitions, 7076 flow [2024-06-27 20:10:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:10:09,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-27 20:10:09,168 INFO L175 Difference]: Start difference. First operand has 407 places, 522 transitions, 5412 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:10:09,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 554 transitions, 7076 flow [2024-06-27 20:10:14,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 554 transitions, 6926 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:14,516 INFO L231 Difference]: Finished difference. Result has 409 places, 528 transitions, 5604 flow [2024-06-27 20:10:14,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5604, PETRI_PLACES=409, PETRI_TRANSITIONS=528} [2024-06-27 20:10:14,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-27 20:10:14,516 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 528 transitions, 5604 flow [2024-06-27 20:10:14,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:14,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:14,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:10:14,517 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:10:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash -771380019, now seen corresponding path program 1 times [2024-06-27 20:10:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:14,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103958824] [2024-06-27 20:10:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:15,369 INFO 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 20:10:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103958824] [2024-06-27 20:10:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103958824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:15,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:15,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836891624] [2024-06-27 20:10:15,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:15,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:15,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:15,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:10:15,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 528 transitions, 5604 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:15,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:15,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:10:15,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:16,985 INFO L124 PetriNetUnfolderBase]: 3964/6303 cut-off events. [2024-06-27 20:10:16,985 INFO L125 PetriNetUnfolderBase]: For 1443602/1443602 co-relation queries the response was YES. [2024-06-27 20:10:17,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61639 conditions, 6303 events. 3964/6303 cut-off events. For 1443602/1443602 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 38824 event pairs, 767 based on Foata normal form. 1/6301 useless extension candidates. Maximal degree in co-relation 61449. Up to 6000 conditions per place. [2024-06-27 20:10:17,088 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 491 selfloop transitions, 65 changer transitions 0/560 dead transitions. [2024-06-27 20:10:17,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 560 transitions, 7206 flow [2024-06-27 20:10:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 20:10:17,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 20:10:17,089 INFO L175 Difference]: Start difference. First operand has 409 places, 528 transitions, 5604 flow. Second operand 9 states and 162 transitions. [2024-06-27 20:10:17,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 560 transitions, 7206 flow [2024-06-27 20:10:22,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 560 transitions, 7020 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 20:10:22,904 INFO L231 Difference]: Finished difference. Result has 413 places, 534 transitions, 5704 flow [2024-06-27 20:10:22,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5418, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5704, PETRI_PLACES=413, PETRI_TRANSITIONS=534} [2024-06-27 20:10:22,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 371 predicate places. [2024-06-27 20:10:22,905 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 534 transitions, 5704 flow [2024-06-27 20:10:22,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:22,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:22,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:22,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 20:10:22,905 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:10:22,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1566642119, now seen corresponding path program 2 times [2024-06-27 20:10:22,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:22,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761914376] [2024-06-27 20:10:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:22,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:23,742 INFO 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 20:10:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:23,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761914376] [2024-06-27 20:10:23,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761914376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:23,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:23,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446373366] [2024-06-27 20:10:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:23,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:23,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:10:23,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 534 transitions, 5704 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:23,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:23,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:10:23,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:25,413 INFO L124 PetriNetUnfolderBase]: 3974/6319 cut-off events. [2024-06-27 20:10:25,413 INFO L125 PetriNetUnfolderBase]: For 1467459/1467459 co-relation queries the response was YES. [2024-06-27 20:10:25,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62302 conditions, 6319 events. 3974/6319 cut-off events. For 1467459/1467459 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 38914 event pairs, 767 based on Foata normal form. 1/6317 useless extension candidates. Maximal degree in co-relation 62110. Up to 6048 conditions per place. [2024-06-27 20:10:25,518 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 503 selfloop transitions, 55 changer transitions 0/562 dead transitions. [2024-06-27 20:10:25,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 562 transitions, 6991 flow [2024-06-27 20:10:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:10:25,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-27 20:10:25,519 INFO L175 Difference]: Start difference. First operand has 413 places, 534 transitions, 5704 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:10:25,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 562 transitions, 6991 flow [2024-06-27 20:10:31,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 562 transitions, 6798 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-27 20:10:31,196 INFO L231 Difference]: Finished difference. Result has 418 places, 540 transitions, 5740 flow [2024-06-27 20:10:31,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5551, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5740, PETRI_PLACES=418, PETRI_TRANSITIONS=540} [2024-06-27 20:10:31,197 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-27 20:10:31,197 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 540 transitions, 5740 flow [2024-06-27 20:10:31,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:31,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:31,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 20:10:31,198 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:10:31,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1566879269, now seen corresponding path program 3 times [2024-06-27 20:10:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207659168] [2024-06-27 20:10:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:31,954 INFO 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 20:10:31,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:31,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207659168] [2024-06-27 20:10:31,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207659168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:31,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:31,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:31,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858193633] [2024-06-27 20:10:31,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:31,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:31,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:31,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:32,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:10:32,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 540 transitions, 5740 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:32,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:32,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:10:32,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:33,539 INFO L124 PetriNetUnfolderBase]: 3979/6322 cut-off events. [2024-06-27 20:10:33,540 INFO L125 PetriNetUnfolderBase]: For 1486627/1486627 co-relation queries the response was YES. [2024-06-27 20:10:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62471 conditions, 6322 events. 3979/6322 cut-off events. For 1486627/1486627 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 38909 event pairs, 765 based on Foata normal form. 1/6320 useless extension candidates. Maximal degree in co-relation 62277. Up to 6049 conditions per place. [2024-06-27 20:10:33,639 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 501 selfloop transitions, 60 changer transitions 0/565 dead transitions. [2024-06-27 20:10:33,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 565 transitions, 6974 flow [2024-06-27 20:10:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 20:10:33,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-27 20:10:33,641 INFO L175 Difference]: Start difference. First operand has 418 places, 540 transitions, 5740 flow. Second operand 9 states and 158 transitions. [2024-06-27 20:10:33,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 565 transitions, 6974 flow [2024-06-27 20:10:40,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 565 transitions, 6838 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 20:10:40,265 INFO L231 Difference]: Finished difference. Result has 421 places, 543 transitions, 5784 flow [2024-06-27 20:10:40,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5604, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5784, PETRI_PLACES=421, PETRI_TRANSITIONS=543} [2024-06-27 20:10:40,266 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-27 20:10:40,266 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 543 transitions, 5784 flow [2024-06-27 20:10:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:40,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:40,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 20:10:40,267 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:10:40,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash 782998209, now seen corresponding path program 3 times [2024-06-27 20:10:40,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246046569] [2024-06-27 20:10:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:40,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:10:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:41,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246046569] [2024-06-27 20:10:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246046569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:41,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835719935] [2024-06-27 20:10:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:41,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:41,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:41,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:10:41,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 543 transitions, 5784 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:41,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:41,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:10:41,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:42,832 INFO L124 PetriNetUnfolderBase]: 3984/6335 cut-off events. [2024-06-27 20:10:42,832 INFO L125 PetriNetUnfolderBase]: For 1507065/1507065 co-relation queries the response was YES. [2024-06-27 20:10:42,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62717 conditions, 6335 events. 3984/6335 cut-off events. For 1507065/1507065 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39030 event pairs, 766 based on Foata normal form. 1/6333 useless extension candidates. Maximal degree in co-relation 62522. Up to 6087 conditions per place. [2024-06-27 20:10:42,941 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 525 selfloop transitions, 39 changer transitions 0/568 dead transitions. [2024-06-27 20:10:42,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 568 transitions, 7060 flow [2024-06-27 20:10:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:10:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:10:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:10:42,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-27 20:10:42,943 INFO L175 Difference]: Start difference. First operand has 421 places, 543 transitions, 5784 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:10:42,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 568 transitions, 7060 flow [2024-06-27 20:10:50,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 568 transitions, 6908 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:10:50,528 INFO L231 Difference]: Finished difference. Result has 423 places, 546 transitions, 5806 flow [2024-06-27 20:10:50,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5632, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5806, PETRI_PLACES=423, PETRI_TRANSITIONS=546} [2024-06-27 20:10:50,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 381 predicate places. [2024-06-27 20:10:50,529 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 546 transitions, 5806 flow [2024-06-27 20:10:50,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:50,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:10:50,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:10:50,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 20:10:50,529 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:10:50,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:10:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1486870284, now seen corresponding path program 1 times [2024-06-27 20:10:50,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:10:50,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472372677] [2024-06-27 20:10:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:10:50,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:10:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:10:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:10:51,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:10:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472372677] [2024-06-27 20:10:51,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472372677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:10:51,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:10:51,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:10:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512705991] [2024-06-27 20:10:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:10:51,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:10:51,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:10:51,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:10:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:10:51,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:10:51,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 546 transitions, 5806 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:10:51,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:10:51,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:10:51,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:10:53,106 INFO L124 PetriNetUnfolderBase]: 3997/6351 cut-off events. [2024-06-27 20:10:53,106 INFO L125 PetriNetUnfolderBase]: For 1538059/1538059 co-relation queries the response was YES. [2024-06-27 20:10:53,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63188 conditions, 6351 events. 3997/6351 cut-off events. For 1538059/1538059 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 39123 event pairs, 764 based on Foata normal form. 1/6349 useless extension candidates. Maximal degree in co-relation 62992. Up to 6080 conditions per place. [2024-06-27 20:10:53,220 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 534 selfloop transitions, 44 changer transitions 0/582 dead transitions. [2024-06-27 20:10:53,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 582 transitions, 7522 flow [2024-06-27 20:10:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:10:53,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:10:53,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 20:10:53,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-27 20:10:53,222 INFO L175 Difference]: Start difference. First operand has 423 places, 546 transitions, 5806 flow. Second operand 10 states and 168 transitions. [2024-06-27 20:10:53,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 582 transitions, 7522 flow [2024-06-27 20:11:00,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 582 transitions, 7376 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:00,549 INFO L231 Difference]: Finished difference. Result has 427 places, 555 transitions, 5974 flow [2024-06-27 20:11:00,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5974, PETRI_PLACES=427, PETRI_TRANSITIONS=555} [2024-06-27 20:11:00,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-06-27 20:11:00,550 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 555 transitions, 5974 flow [2024-06-27 20:11:00,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:00,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:00,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:00,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 20:11:00,550 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:00,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1483205154, now seen corresponding path program 2 times [2024-06-27 20:11:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:00,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470492231] [2024-06-27 20:11:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:00,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:11:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470492231] [2024-06-27 20:11:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470492231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:01,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:01,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39941535] [2024-06-27 20:11:01,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:01,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:01,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:01,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:01,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 555 transitions, 5974 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:01,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:01,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:01,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:03,131 INFO L124 PetriNetUnfolderBase]: 3999/6356 cut-off events. [2024-06-27 20:11:03,131 INFO L125 PetriNetUnfolderBase]: For 1564939/1564939 co-relation queries the response was YES. [2024-06-27 20:11:03,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63762 conditions, 6356 events. 3999/6356 cut-off events. For 1564939/1564939 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 39162 event pairs, 764 based on Foata normal form. 2/6355 useless extension candidates. Maximal degree in co-relation 63564. Up to 6017 conditions per place. [2024-06-27 20:11:03,228 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 514 selfloop transitions, 62 changer transitions 0/580 dead transitions. [2024-06-27 20:11:03,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 580 transitions, 7312 flow [2024-06-27 20:11:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:11:03,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-27 20:11:03,229 INFO L175 Difference]: Start difference. First operand has 427 places, 555 transitions, 5974 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:11:03,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 580 transitions, 7312 flow [2024-06-27 20:11:09,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 580 transitions, 7099 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-06-27 20:11:09,767 INFO L231 Difference]: Finished difference. Result has 431 places, 558 transitions, 6023 flow [2024-06-27 20:11:09,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5761, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6023, PETRI_PLACES=431, PETRI_TRANSITIONS=558} [2024-06-27 20:11:09,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 389 predicate places. [2024-06-27 20:11:09,768 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 558 transitions, 6023 flow [2024-06-27 20:11:09,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:09,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:09,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:09,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 20:11:09,768 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:09,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1564096529, now seen corresponding path program 1 times [2024-06-27 20:11:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:09,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566393497] [2024-06-27 20:11:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:11:10,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:10,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566393497] [2024-06-27 20:11:10,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566393497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:10,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148737513] [2024-06-27 20:11:10,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:10,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:10,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:10,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:10,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:10,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 558 transitions, 6023 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:10,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:10,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:10,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:12,429 INFO L124 PetriNetUnfolderBase]: 4009/6370 cut-off events. [2024-06-27 20:11:12,429 INFO L125 PetriNetUnfolderBase]: For 1594654/1594654 co-relation queries the response was YES. [2024-06-27 20:11:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64659 conditions, 6370 events. 4009/6370 cut-off events. For 1594654/1594654 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 39322 event pairs, 758 based on Foata normal form. 2/6369 useless extension candidates. Maximal degree in co-relation 64459. Up to 6029 conditions per place. [2024-06-27 20:11:12,559 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 521 selfloop transitions, 59 changer transitions 0/584 dead transitions. [2024-06-27 20:11:12,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 584 transitions, 7351 flow [2024-06-27 20:11:12,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:11:12,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-27 20:11:12,561 INFO L175 Difference]: Start difference. First operand has 431 places, 558 transitions, 6023 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:11:12,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 584 transitions, 7351 flow [2024-06-27 20:11:17,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 584 transitions, 7117 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:17,454 INFO L231 Difference]: Finished difference. Result has 433 places, 561 transitions, 6008 flow [2024-06-27 20:11:17,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5789, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6008, PETRI_PLACES=433, PETRI_TRANSITIONS=561} [2024-06-27 20:11:17,462 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-27 20:11:17,463 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 561 transitions, 6008 flow [2024-06-27 20:11:17,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:17,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:17,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:17,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 20:11:17,463 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:17,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:17,464 INFO L85 PathProgramCache]: Analyzing trace with hash -486252970, now seen corresponding path program 3 times [2024-06-27 20:11:17,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:17,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938861687] [2024-06-27 20:11:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:17,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:11:18,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:18,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938861687] [2024-06-27 20:11:18,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938861687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:18,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:18,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:18,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358316372] [2024-06-27 20:11:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:18,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:18,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:18,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 561 transitions, 6008 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:18,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:18,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:18,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:19,913 INFO L124 PetriNetUnfolderBase]: 4019/6384 cut-off events. [2024-06-27 20:11:19,914 INFO L125 PetriNetUnfolderBase]: For 1618442/1618442 co-relation queries the response was YES. [2024-06-27 20:11:19,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65354 conditions, 6384 events. 4019/6384 cut-off events. For 1618442/1618442 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 39391 event pairs, 755 based on Foata normal form. 2/6383 useless extension candidates. Maximal degree in co-relation 65153. Up to 5980 conditions per place. [2024-06-27 20:11:20,023 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 504 selfloop transitions, 79 changer transitions 0/587 dead transitions. [2024-06-27 20:11:20,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 587 transitions, 7422 flow [2024-06-27 20:11:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:11:20,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-27 20:11:20,024 INFO L175 Difference]: Start difference. First operand has 433 places, 561 transitions, 6008 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:11:20,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 587 transitions, 7422 flow [2024-06-27 20:11:27,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 587 transitions, 7227 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:27,140 INFO L231 Difference]: Finished difference. Result has 435 places, 565 transitions, 6132 flow [2024-06-27 20:11:27,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6132, PETRI_PLACES=435, PETRI_TRANSITIONS=565} [2024-06-27 20:11:27,140 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 393 predicate places. [2024-06-27 20:11:27,140 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 565 transitions, 6132 flow [2024-06-27 20:11:27,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:27,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:27,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:27,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 20:11:27,141 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:27,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1483060849, now seen corresponding path program 2 times [2024-06-27 20:11:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:27,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694274455] [2024-06-27 20:11:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:27,844 INFO 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 20:11:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694274455] [2024-06-27 20:11:27,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694274455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236571360] [2024-06-27 20:11:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:27,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:27,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 565 transitions, 6132 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:27,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:27,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:27,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:29,496 INFO L124 PetriNetUnfolderBase]: 4061/6440 cut-off events. [2024-06-27 20:11:29,497 INFO L125 PetriNetUnfolderBase]: For 1692157/1692157 co-relation queries the response was YES. [2024-06-27 20:11:29,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67456 conditions, 6440 events. 4061/6440 cut-off events. For 1692157/1692157 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 39682 event pairs, 763 based on Foata normal form. 2/6439 useless extension candidates. Maximal degree in co-relation 67254. Up to 5928 conditions per place. [2024-06-27 20:11:29,607 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 493 selfloop transitions, 102 changer transitions 0/599 dead transitions. [2024-06-27 20:11:29,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 599 transitions, 8312 flow [2024-06-27 20:11:29,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 20:11:29,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-27 20:11:29,609 INFO L175 Difference]: Start difference. First operand has 435 places, 565 transitions, 6132 flow. Second operand 9 states and 163 transitions. [2024-06-27 20:11:29,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 599 transitions, 8312 flow [2024-06-27 20:11:34,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 599 transitions, 8021 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:34,855 INFO L231 Difference]: Finished difference. Result has 437 places, 574 transitions, 6345 flow [2024-06-27 20:11:34,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5841, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6345, PETRI_PLACES=437, PETRI_TRANSITIONS=574} [2024-06-27 20:11:34,861 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-27 20:11:34,861 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 574 transitions, 6345 flow [2024-06-27 20:11:34,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:34,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:34,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:34,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 20:11:34,862 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:34,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash -105808375, now seen corresponding path program 3 times [2024-06-27 20:11:34,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:34,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580143680] [2024-06-27 20:11:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:34,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:11:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580143680] [2024-06-27 20:11:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580143680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443510486] [2024-06-27 20:11:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:35,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:35,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 574 transitions, 6345 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:35,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:35,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:35,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:37,189 INFO L124 PetriNetUnfolderBase]: 4055/6430 cut-off events. [2024-06-27 20:11:37,190 INFO L125 PetriNetUnfolderBase]: For 1697413/1697413 co-relation queries the response was YES. [2024-06-27 20:11:37,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67497 conditions, 6430 events. 4055/6430 cut-off events. For 1697413/1697413 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 39639 event pairs, 766 based on Foata normal form. 2/6429 useless extension candidates. Maximal degree in co-relation 67294. Up to 5923 conditions per place. [2024-06-27 20:11:37,298 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 490 selfloop transitions, 104 changer transitions 0/598 dead transitions. [2024-06-27 20:11:37,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 598 transitions, 7949 flow [2024-06-27 20:11:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 20:11:37,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-27 20:11:37,299 INFO L175 Difference]: Start difference. First operand has 437 places, 574 transitions, 6345 flow. Second operand 9 states and 161 transitions. [2024-06-27 20:11:37,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 598 transitions, 7949 flow [2024-06-27 20:11:42,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 598 transitions, 7694 flow, removed 97 selfloop flow, removed 4 redundant places. [2024-06-27 20:11:42,658 INFO L231 Difference]: Finished difference. Result has 442 places, 574 transitions, 6304 flow [2024-06-27 20:11:42,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6090, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6304, PETRI_PLACES=442, PETRI_TRANSITIONS=574} [2024-06-27 20:11:42,659 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 400 predicate places. [2024-06-27 20:11:42,659 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 574 transitions, 6304 flow [2024-06-27 20:11:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:42,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 20:11:42,659 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:42,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:42,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1483055052, now seen corresponding path program 1 times [2024-06-27 20:11:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827450471] [2024-06-27 20:11:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:42,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:11:43,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:43,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827450471] [2024-06-27 20:11:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827450471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:43,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:43,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:43,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829032694] [2024-06-27 20:11:43,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:43,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:43,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:43,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:43,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:43,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:43,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 574 transitions, 6304 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:43,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:43,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:43,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:45,437 INFO L124 PetriNetUnfolderBase]: 4107/6508 cut-off events. [2024-06-27 20:11:45,437 INFO L125 PetriNetUnfolderBase]: For 1784524/1784524 co-relation queries the response was YES. [2024-06-27 20:11:45,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69065 conditions, 6508 events. 4107/6508 cut-off events. For 1784524/1784524 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 40036 event pairs, 762 based on Foata normal form. 4/6509 useless extension candidates. Maximal degree in co-relation 68860. Up to 6090 conditions per place. [2024-06-27 20:11:45,536 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 536 selfloop transitions, 72 changer transitions 0/612 dead transitions. [2024-06-27 20:11:45,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 612 transitions, 8196 flow [2024-06-27 20:11:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:45,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 20:11:45,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44173441734417346 [2024-06-27 20:11:45,537 INFO L175 Difference]: Start difference. First operand has 442 places, 574 transitions, 6304 flow. Second operand 9 states and 163 transitions. [2024-06-27 20:11:45,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 612 transitions, 8196 flow [2024-06-27 20:11:51,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 612 transitions, 8040 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 20:11:51,643 INFO L231 Difference]: Finished difference. Result has 445 places, 586 transitions, 6594 flow [2024-06-27 20:11:51,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6148, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6594, PETRI_PLACES=445, PETRI_TRANSITIONS=586} [2024-06-27 20:11:51,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-27 20:11:51,643 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 586 transitions, 6594 flow [2024-06-27 20:11:51,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:51,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:11:51,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:11:51,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 20:11:51,644 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:11:51,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:11:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash -290675861, now seen corresponding path program 4 times [2024-06-27 20:11:51,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:11:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468489255] [2024-06-27 20:11:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:11:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:11:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:11:52,450 INFO 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 20:11:52,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:11:52,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468489255] [2024-06-27 20:11:52,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468489255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:11:52,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:11:52,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:11:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999980770] [2024-06-27 20:11:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:11:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:11:52,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:11:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:11:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:11:52,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:11:52,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 586 transitions, 6594 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:11:52,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:11:52,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:11:52,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:11:54,231 INFO L124 PetriNetUnfolderBase]: 4120/6522 cut-off events. [2024-06-27 20:11:54,231 INFO L125 PetriNetUnfolderBase]: For 1795293/1795293 co-relation queries the response was YES. [2024-06-27 20:11:54,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70265 conditions, 6522 events. 4120/6522 cut-off events. For 1795293/1795293 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 40138 event pairs, 770 based on Foata normal form. 1/6520 useless extension candidates. Maximal degree in co-relation 70058. Up to 6244 conditions per place. [2024-06-27 20:11:54,347 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 550 selfloop transitions, 56 changer transitions 0/610 dead transitions. [2024-06-27 20:11:54,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 610 transitions, 8256 flow [2024-06-27 20:11:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:11:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:11:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:11:54,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-27 20:11:54,349 INFO L175 Difference]: Start difference. First operand has 445 places, 586 transitions, 6594 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:11:54,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 610 transitions, 8256 flow [2024-06-27 20:12:02,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 610 transitions, 8080 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-27 20:12:02,525 INFO L231 Difference]: Finished difference. Result has 450 places, 592 transitions, 6650 flow [2024-06-27 20:12:02,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6650, PETRI_PLACES=450, PETRI_TRANSITIONS=592} [2024-06-27 20:12:02,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-27 20:12:02,525 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 592 transitions, 6650 flow [2024-06-27 20:12:02,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:02,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:12:02,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:12:02,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 20:12:02,526 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:12:02,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:12:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -838733723, now seen corresponding path program 4 times [2024-06-27 20:12:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:12:02,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792994516] [2024-06-27 20:12:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:12:02,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:12:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:12:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:12:03,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:12:03,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792994516] [2024-06-27 20:12:03,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792994516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:12:03,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:12:03,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:12:03,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595356557] [2024-06-27 20:12:03,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:12:03,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:12:03,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:12:03,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:12:03,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:12:03,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:12:03,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 592 transitions, 6650 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:03,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:12:03,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:12:03,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:12:05,329 INFO L124 PetriNetUnfolderBase]: 4162/6586 cut-off events. [2024-06-27 20:12:05,330 INFO L125 PetriNetUnfolderBase]: For 1869793/1869793 co-relation queries the response was YES. [2024-06-27 20:12:05,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71133 conditions, 6586 events. 4162/6586 cut-off events. For 1869793/1869793 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 40544 event pairs, 769 based on Foata normal form. 2/6585 useless extension candidates. Maximal degree in co-relation 70924. Up to 6303 conditions per place. [2024-06-27 20:12:05,649 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 566 selfloop transitions, 52 changer transitions 0/622 dead transitions. [2024-06-27 20:12:05,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 622 transitions, 8825 flow [2024-06-27 20:12:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:12:05,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:12:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 20:12:05,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-27 20:12:05,658 INFO L175 Difference]: Start difference. First operand has 450 places, 592 transitions, 6650 flow. Second operand 9 states and 157 transitions. [2024-06-27 20:12:05,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 622 transitions, 8825 flow [2024-06-27 20:12:13,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 622 transitions, 8730 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 20:12:13,223 INFO L231 Difference]: Finished difference. Result has 455 places, 601 transitions, 6920 flow [2024-06-27 20:12:13,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6555, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6920, PETRI_PLACES=455, PETRI_TRANSITIONS=601} [2024-06-27 20:12:13,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 413 predicate places. [2024-06-27 20:12:13,233 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 601 transitions, 6920 flow [2024-06-27 20:12:13,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:13,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:12:13,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:12:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 20:12:13,233 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:12:13,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:12:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1086570847, now seen corresponding path program 4 times [2024-06-27 20:12:13,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:12:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578095798] [2024-06-27 20:12:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:12:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:12:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:12:14,237 INFO 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 20:12:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:12:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578095798] [2024-06-27 20:12:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578095798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:12:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:12:14,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:12:14,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110723549] [2024-06-27 20:12:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:12:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:12:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:12:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:12:14,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:12:14,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:12:14,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 601 transitions, 6920 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:14,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:12:14,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:12:14,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:12:16,103 INFO L124 PetriNetUnfolderBase]: 4167/6591 cut-off events. [2024-06-27 20:12:16,103 INFO L125 PetriNetUnfolderBase]: For 1883346/1883346 co-relation queries the response was YES. [2024-06-27 20:12:16,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71507 conditions, 6591 events. 4167/6591 cut-off events. For 1883346/1883346 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 40570 event pairs, 777 based on Foata normal form. 1/6589 useless extension candidates. Maximal degree in co-relation 71296. Up to 6341 conditions per place. [2024-06-27 20:12:16,224 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 580 selfloop transitions, 37 changer transitions 0/621 dead transitions. [2024-06-27 20:12:16,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 621 transitions, 8292 flow [2024-06-27 20:12:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:12:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:12:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 20:12:16,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010840108401084 [2024-06-27 20:12:16,225 INFO L175 Difference]: Start difference. First operand has 455 places, 601 transitions, 6920 flow. Second operand 9 states and 148 transitions. [2024-06-27 20:12:16,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 621 transitions, 8292 flow [2024-06-27 20:12:24,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 621 transitions, 8175 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 20:12:24,622 INFO L231 Difference]: Finished difference. Result has 460 places, 604 transitions, 6979 flow [2024-06-27 20:12:24,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6803, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6979, PETRI_PLACES=460, PETRI_TRANSITIONS=604} [2024-06-27 20:12:24,622 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2024-06-27 20:12:24,623 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 604 transitions, 6979 flow [2024-06-27 20:12:24,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:24,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:12:24,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:12:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 20:12:24,623 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:12:24,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:12:24,624 INFO L85 PathProgramCache]: Analyzing trace with hash -290438711, now seen corresponding path program 5 times [2024-06-27 20:12:24,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:12:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110200284] [2024-06-27 20:12:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:12:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:12:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:12:25,399 INFO 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 20:12:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:12:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110200284] [2024-06-27 20:12:25,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110200284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:12:25,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:12:25,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:12:25,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153086727] [2024-06-27 20:12:25,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:12:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:12:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:12:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:12:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:12:25,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:12:25,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 604 transitions, 6979 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:25,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:12:25,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:12:25,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:12:27,573 INFO L124 PetriNetUnfolderBase]: 4177/6603 cut-off events. [2024-06-27 20:12:27,573 INFO L125 PetriNetUnfolderBase]: For 1905983/1905983 co-relation queries the response was YES. [2024-06-27 20:12:27,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71748 conditions, 6603 events. 4177/6603 cut-off events. For 1905983/1905983 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 40607 event pairs, 778 based on Foata normal form. 1/6601 useless extension candidates. Maximal degree in co-relation 71535. Up to 6329 conditions per place. [2024-06-27 20:12:27,679 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 569 selfloop transitions, 54 changer transitions 0/627 dead transitions. [2024-06-27 20:12:27,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 627 transitions, 8362 flow [2024-06-27 20:12:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:12:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:12:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:12:27,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-27 20:12:27,680 INFO L175 Difference]: Start difference. First operand has 460 places, 604 transitions, 6979 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:12:27,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 627 transitions, 8362 flow [2024-06-27 20:12:35,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 627 transitions, 8214 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 20:12:35,506 INFO L231 Difference]: Finished difference. Result has 462 places, 610 transitions, 7040 flow [2024-06-27 20:12:35,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6831, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7040, PETRI_PLACES=462, PETRI_TRANSITIONS=610} [2024-06-27 20:12:35,506 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-27 20:12:35,506 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 610 transitions, 7040 flow [2024-06-27 20:12:35,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:35,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:12:35,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:12:35,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 20:12:35,507 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:12:35,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:12:35,507 INFO L85 PathProgramCache]: Analyzing trace with hash -286945228, now seen corresponding path program 2 times [2024-06-27 20:12:35,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:12:35,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913179073] [2024-06-27 20:12:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:12:35,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:12:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:12:36,198 INFO 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 20:12:36,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:12:36,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913179073] [2024-06-27 20:12:36,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913179073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:12:36,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:12:36,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:12:36,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387813238] [2024-06-27 20:12:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:12:36,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:12:36,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:12:36,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:12:36,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:12:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:12:36,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 610 transitions, 7040 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:36,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:12:36,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:12:36,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:12:38,542 INFO L124 PetriNetUnfolderBase]: 4229/6687 cut-off events. [2024-06-27 20:12:38,542 INFO L125 PetriNetUnfolderBase]: For 2009039/2009039 co-relation queries the response was YES. [2024-06-27 20:12:38,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73097 conditions, 6687 events. 4229/6687 cut-off events. For 2009039/2009039 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 41227 event pairs, 777 based on Foata normal form. 4/6688 useless extension candidates. Maximal degree in co-relation 72883. Up to 6377 conditions per place. [2024-06-27 20:12:38,651 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 582 selfloop transitions, 54 changer transitions 0/640 dead transitions. [2024-06-27 20:12:38,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 640 transitions, 8880 flow [2024-06-27 20:12:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:12:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:12:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:12:38,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-27 20:12:38,654 INFO L175 Difference]: Start difference. First operand has 462 places, 610 transitions, 7040 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:12:38,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 640 transitions, 8880 flow [2024-06-27 20:12:47,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 640 transitions, 8738 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 20:12:47,084 INFO L231 Difference]: Finished difference. Result has 465 places, 618 transitions, 7174 flow [2024-06-27 20:12:47,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6898, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7174, PETRI_PLACES=465, PETRI_TRANSITIONS=618} [2024-06-27 20:12:47,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 423 predicate places. [2024-06-27 20:12:47,084 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 618 transitions, 7174 flow [2024-06-27 20:12:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:47,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:12:47,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:12:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 20:12:47,085 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:12:47,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:12:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1259581795, now seen corresponding path program 5 times [2024-06-27 20:12:47,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:12:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204573472] [2024-06-27 20:12:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:12:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:12:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:12:47,801 INFO 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 20:12:47,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:12:47,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204573472] [2024-06-27 20:12:47,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204573472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:12:47,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:12:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:12:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876827100] [2024-06-27 20:12:47,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:12:47,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:12:47,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:12:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:12:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:12:47,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:12:47,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 618 transitions, 7174 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:47,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:12:47,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:12:47,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:12:50,066 INFO L124 PetriNetUnfolderBase]: 4223/6675 cut-off events. [2024-06-27 20:12:50,066 INFO L125 PetriNetUnfolderBase]: For 1988953/1988953 co-relation queries the response was YES. [2024-06-27 20:12:50,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72925 conditions, 6675 events. 4223/6675 cut-off events. For 1988953/1988953 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 41164 event pairs, 776 based on Foata normal form. 2/6674 useless extension candidates. Maximal degree in co-relation 72710. Up to 6391 conditions per place. [2024-06-27 20:12:50,183 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 581 selfloop transitions, 53 changer transitions 0/638 dead transitions. [2024-06-27 20:12:50,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 638 transitions, 8844 flow [2024-06-27 20:12:50,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:12:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:12:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 20:12:50,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-27 20:12:50,185 INFO L175 Difference]: Start difference. First operand has 465 places, 618 transitions, 7174 flow. Second operand 9 states and 155 transitions. [2024-06-27 20:12:50,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 638 transitions, 8844 flow [2024-06-27 20:12:58,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 638 transitions, 8681 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 20:12:58,895 INFO L231 Difference]: Finished difference. Result has 470 places, 618 transitions, 7123 flow [2024-06-27 20:12:58,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7011, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7123, PETRI_PLACES=470, PETRI_TRANSITIONS=618} [2024-06-27 20:12:58,896 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-27 20:12:58,896 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 618 transitions, 7123 flow [2024-06-27 20:12:58,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:58,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:12:58,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:12:58,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 20:12:58,897 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:12:58,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:12:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash -286951180, now seen corresponding path program 4 times [2024-06-27 20:12:58,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:12:58,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165120786] [2024-06-27 20:12:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:12:58,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:12:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:12:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:12:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:12:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165120786] [2024-06-27 20:12:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165120786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:12:59,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:12:59,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:12:59,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929053397] [2024-06-27 20:12:59,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:12:59,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:12:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:12:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:12:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:12:59,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:12:59,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 618 transitions, 7123 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:12:59,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:12:59,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:12:59,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:01,905 INFO L124 PetriNetUnfolderBase]: 4233/6691 cut-off events. [2024-06-27 20:13:01,905 INFO L125 PetriNetUnfolderBase]: For 2013635/2013635 co-relation queries the response was YES. [2024-06-27 20:13:01,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73282 conditions, 6691 events. 4233/6691 cut-off events. For 2013635/2013635 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41260 event pairs, 780 based on Foata normal form. 2/6690 useless extension candidates. Maximal degree in co-relation 73065. Up to 6452 conditions per place. [2024-06-27 20:13:02,026 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 602 selfloop transitions, 34 changer transitions 0/640 dead transitions. [2024-06-27 20:13:02,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 640 transitions, 8633 flow [2024-06-27 20:13:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:13:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:13:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 20:13:02,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037940379403794 [2024-06-27 20:13:02,028 INFO L175 Difference]: Start difference. First operand has 470 places, 618 transitions, 7123 flow. Second operand 9 states and 149 transitions. [2024-06-27 20:13:02,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 640 transitions, 8633 flow [2024-06-27 20:13:10,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 640 transitions, 8525 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:13:10,982 INFO L231 Difference]: Finished difference. Result has 472 places, 622 transitions, 7256 flow [2024-06-27 20:13:10,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7015, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7256, PETRI_PLACES=472, PETRI_TRANSITIONS=622} [2024-06-27 20:13:10,982 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-06-27 20:13:10,983 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 622 transitions, 7256 flow [2024-06-27 20:13:10,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:10,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:10,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:10,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 20:13:10,983 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:13:10,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash -279713951, now seen corresponding path program 6 times [2024-06-27 20:13:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827072472] [2024-06-27 20:13:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:13:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827072472] [2024-06-27 20:13:11,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827072472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:11,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:11,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:13:11,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289478642] [2024-06-27 20:13:11,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:11,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:13:11,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:11,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:13:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:13:11,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:13:11,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 622 transitions, 7256 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:11,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:11,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:13:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:14,021 INFO L124 PetriNetUnfolderBase]: 4230/6677 cut-off events. [2024-06-27 20:13:14,021 INFO L125 PetriNetUnfolderBase]: For 2024257/2024257 co-relation queries the response was YES. [2024-06-27 20:13:14,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73950 conditions, 6677 events. 4230/6677 cut-off events. For 2024257/2024257 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 41073 event pairs, 787 based on Foata normal form. 1/6675 useless extension candidates. Maximal degree in co-relation 73732. Up to 6403 conditions per place. [2024-06-27 20:13:14,129 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 580 selfloop transitions, 55 changer transitions 0/639 dead transitions. [2024-06-27 20:13:14,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 639 transitions, 8574 flow [2024-06-27 20:13:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:13:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:13:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 20:13:14,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-27 20:13:14,131 INFO L175 Difference]: Start difference. First operand has 472 places, 622 transitions, 7256 flow. Second operand 9 states and 151 transitions. [2024-06-27 20:13:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 639 transitions, 8574 flow [2024-06-27 20:13:23,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 639 transitions, 8327 flow, removed 92 selfloop flow, removed 7 redundant places. [2024-06-27 20:13:23,707 INFO L231 Difference]: Finished difference. Result has 474 places, 622 transitions, 7125 flow [2024-06-27 20:13:23,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7125, PETRI_PLACES=474, PETRI_TRANSITIONS=622} [2024-06-27 20:13:23,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-27 20:13:23,707 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 622 transitions, 7125 flow [2024-06-27 20:13:23,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:23,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:23,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:23,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 20:13:23,708 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:13:23,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash -286735978, now seen corresponding path program 3 times [2024-06-27 20:13:23,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:23,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632582783] [2024-06-27 20:13:23,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:23,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:13:24,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:24,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632582783] [2024-06-27 20:13:24,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632582783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:24,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:24,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:13:24,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926960486] [2024-06-27 20:13:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:24,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:13:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:13:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:13:24,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:13:24,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 622 transitions, 7125 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:24,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:24,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:13:24,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:26,647 INFO L124 PetriNetUnfolderBase]: 4250/6705 cut-off events. [2024-06-27 20:13:26,648 INFO L125 PetriNetUnfolderBase]: For 2082766/2082766 co-relation queries the response was YES. [2024-06-27 20:13:26,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74139 conditions, 6705 events. 4250/6705 cut-off events. For 2082766/2082766 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41224 event pairs, 792 based on Foata normal form. 4/6706 useless extension candidates. Maximal degree in co-relation 73920. Up to 6455 conditions per place. [2024-06-27 20:13:26,761 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 594 selfloop transitions, 45 changer transitions 0/643 dead transitions. [2024-06-27 20:13:26,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 643 transitions, 8547 flow [2024-06-27 20:13:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:13:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:13:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:13:26,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-27 20:13:26,762 INFO L175 Difference]: Start difference. First operand has 474 places, 622 transitions, 7125 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:13:26,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 643 transitions, 8547 flow [2024-06-27 20:13:36,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 643 transitions, 8399 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:13:36,747 INFO L231 Difference]: Finished difference. Result has 474 places, 625 transitions, 7153 flow [2024-06-27 20:13:36,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6977, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7153, PETRI_PLACES=474, PETRI_TRANSITIONS=625} [2024-06-27 20:13:36,747 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 432 predicate places. [2024-06-27 20:13:36,748 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 625 transitions, 7153 flow [2024-06-27 20:13:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:36,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:36,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:36,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 20:13:36,748 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:13:36,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash -279593578, now seen corresponding path program 4 times [2024-06-27 20:13:36,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:36,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067200013] [2024-06-27 20:13:36,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:36,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:37,414 INFO 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 20:13:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067200013] [2024-06-27 20:13:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067200013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:37,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:13:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087477806] [2024-06-27 20:13:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:37,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:13:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:13:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:13:37,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:13:37,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 625 transitions, 7153 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:37,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:37,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:13:37,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:39,611 INFO L124 PetriNetUnfolderBase]: 4238/6695 cut-off events. [2024-06-27 20:13:39,611 INFO L125 PetriNetUnfolderBase]: For 2059187/2059187 co-relation queries the response was YES. [2024-06-27 20:13:39,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73560 conditions, 6695 events. 4238/6695 cut-off events. For 2059187/2059187 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 41233 event pairs, 780 based on Foata normal form. 4/6696 useless extension candidates. Maximal degree in co-relation 73340. Up to 6417 conditions per place. [2024-06-27 20:13:39,719 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 591 selfloop transitions, 50 changer transitions 0/645 dead transitions. [2024-06-27 20:13:39,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 645 transitions, 8531 flow [2024-06-27 20:13:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:13:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:13:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:13:39,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-27 20:13:39,720 INFO L175 Difference]: Start difference. First operand has 474 places, 625 transitions, 7153 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:13:39,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 645 transitions, 8531 flow [2024-06-27 20:13:49,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 645 transitions, 8341 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 20:13:49,331 INFO L231 Difference]: Finished difference. Result has 476 places, 625 transitions, 7069 flow [2024-06-27 20:13:49,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6963, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7069, PETRI_PLACES=476, PETRI_TRANSITIONS=625} [2024-06-27 20:13:49,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 434 predicate places. [2024-06-27 20:13:49,332 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 625 transitions, 7069 flow [2024-06-27 20:13:49,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:49,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:13:49,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:13:49,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 20:13:49,333 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:13:49,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:13:49,333 INFO L85 PathProgramCache]: Analyzing trace with hash -279593795, now seen corresponding path program 6 times [2024-06-27 20:13:49,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:13:49,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128508290] [2024-06-27 20:13:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:13:49,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:13:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:13:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:13:50,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:13:50,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128508290] [2024-06-27 20:13:50,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128508290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:13:50,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:13:50,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:13:50,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749260768] [2024-06-27 20:13:50,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:13:50,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:13:50,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:13:50,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:13:50,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:13:50,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:13:50,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 625 transitions, 7069 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:13:50,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:13:50,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:13:50,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:13:52,261 INFO L124 PetriNetUnfolderBase]: 4232/6687 cut-off events. [2024-06-27 20:13:52,261 INFO L125 PetriNetUnfolderBase]: For 2033742/2033742 co-relation queries the response was YES. [2024-06-27 20:13:52,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73152 conditions, 6687 events. 4232/6687 cut-off events. For 2033742/2033742 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41242 event pairs, 780 based on Foata normal form. 2/6686 useless extension candidates. Maximal degree in co-relation 72931. Up to 6446 conditions per place. [2024-06-27 20:13:52,374 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 599 selfloop transitions, 40 changer transitions 0/643 dead transitions. [2024-06-27 20:13:52,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 643 transitions, 8431 flow [2024-06-27 20:13:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:13:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:13:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 20:13:52,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065040650406504 [2024-06-27 20:13:52,376 INFO L175 Difference]: Start difference. First operand has 476 places, 625 transitions, 7069 flow. Second operand 9 states and 150 transitions. [2024-06-27 20:13:52,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 643 transitions, 8431 flow [2024-06-27 20:14:02,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 643 transitions, 8249 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 20:14:02,288 INFO L231 Difference]: Finished difference. Result has 477 places, 625 transitions, 6973 flow [2024-06-27 20:14:02,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6887, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6973, PETRI_PLACES=477, PETRI_TRANSITIONS=625} [2024-06-27 20:14:02,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-06-27 20:14:02,289 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 625 transitions, 6973 flow [2024-06-27 20:14:02,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:02,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:02,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:02,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 20:14:02,289 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:14:02,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash -860038035, now seen corresponding path program 1 times [2024-06-27 20:14:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:02,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119692671] [2024-06-27 20:14:02,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:02,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:03,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:03,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119692671] [2024-06-27 20:14:03,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119692671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:03,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:03,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718606228] [2024-06-27 20:14:03,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:03,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:03,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:03,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:14:03,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 625 transitions, 6973 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:03,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:03,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:14:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:05,403 INFO L124 PetriNetUnfolderBase]: 4240/6693 cut-off events. [2024-06-27 20:14:05,403 INFO L125 PetriNetUnfolderBase]: For 2057250/2057250 co-relation queries the response was YES. [2024-06-27 20:14:05,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73217 conditions, 6693 events. 4240/6693 cut-off events. For 2057250/2057250 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41092 event pairs, 655 based on Foata normal form. 2/6692 useless extension candidates. Maximal degree in co-relation 72995. Up to 6329 conditions per place. [2024-06-27 20:14:05,515 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 590 selfloop transitions, 64 changer transitions 0/658 dead transitions. [2024-06-27 20:14:05,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 658 transitions, 8745 flow [2024-06-27 20:14:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:14:05,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:14:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 20:14:05,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-27 20:14:05,517 INFO L175 Difference]: Start difference. First operand has 477 places, 625 transitions, 6973 flow. Second operand 9 states and 162 transitions. [2024-06-27 20:14:05,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 658 transitions, 8745 flow [2024-06-27 20:14:15,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 658 transitions, 8641 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:14:15,523 INFO L231 Difference]: Finished difference. Result has 477 places, 629 transitions, 7074 flow [2024-06-27 20:14:15,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6869, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7074, PETRI_PLACES=477, PETRI_TRANSITIONS=629} [2024-06-27 20:14:15,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-06-27 20:14:15,524 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 629 transitions, 7074 flow [2024-06-27 20:14:15,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:15,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:15,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:15,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 20:14:15,524 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:14:15,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1825259495, now seen corresponding path program 2 times [2024-06-27 20:14:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:15,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315755855] [2024-06-27 20:14:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:16,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:16,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315755855] [2024-06-27 20:14:16,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315755855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:16,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:16,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:16,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989923364] [2024-06-27 20:14:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:16,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:16,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:16,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:16,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:16,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:14:16,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 629 transitions, 7074 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:16,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:16,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:14:16,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:18,666 INFO L124 PetriNetUnfolderBase]: 4261/6732 cut-off events. [2024-06-27 20:14:18,666 INFO L125 PetriNetUnfolderBase]: For 2106794/2106794 co-relation queries the response was YES. [2024-06-27 20:14:18,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74123 conditions, 6732 events. 4261/6732 cut-off events. For 2106794/2106794 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 41500 event pairs, 783 based on Foata normal form. 2/6731 useless extension candidates. Maximal degree in co-relation 73900. Up to 6430 conditions per place. [2024-06-27 20:14:18,776 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 594 selfloop transitions, 60 changer transitions 0/658 dead transitions. [2024-06-27 20:14:18,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 658 transitions, 8844 flow [2024-06-27 20:14:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:14:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:14:18,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 20:14:18,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43089430894308944 [2024-06-27 20:14:18,777 INFO L175 Difference]: Start difference. First operand has 477 places, 629 transitions, 7074 flow. Second operand 9 states and 159 transitions. [2024-06-27 20:14:18,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 658 transitions, 8844 flow [2024-06-27 20:14:29,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 658 transitions, 8702 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 20:14:29,123 INFO L231 Difference]: Finished difference. Result has 481 places, 633 transitions, 7137 flow [2024-06-27 20:14:29,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6960, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7137, PETRI_PLACES=481, PETRI_TRANSITIONS=633} [2024-06-27 20:14:29,124 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-27 20:14:29,124 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 633 transitions, 7137 flow [2024-06-27 20:14:29,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:29,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:29,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:29,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 20:14:29,125 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:14:29,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash 569730369, now seen corresponding path program 3 times [2024-06-27 20:14:29,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523322376] [2024-06-27 20:14:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:30,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:30,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523322376] [2024-06-27 20:14:30,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523322376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:30,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:30,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692788025] [2024-06-27 20:14:30,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:30,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:30,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:14:30,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 633 transitions, 7137 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:30,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:30,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:14:30,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:32,445 INFO L124 PetriNetUnfolderBase]: 4256/6719 cut-off events. [2024-06-27 20:14:32,445 INFO L125 PetriNetUnfolderBase]: For 2105944/2105944 co-relation queries the response was YES. [2024-06-27 20:14:32,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73888 conditions, 6719 events. 4256/6719 cut-off events. For 2105944/2105944 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 41337 event pairs, 784 based on Foata normal form. 2/6718 useless extension candidates. Maximal degree in co-relation 73663. Up to 6440 conditions per place. [2024-06-27 20:14:32,556 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 595 selfloop transitions, 57 changer transitions 0/656 dead transitions. [2024-06-27 20:14:32,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 656 transitions, 8507 flow [2024-06-27 20:14:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:14:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:14:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:14:32,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42276422764227645 [2024-06-27 20:14:32,557 INFO L175 Difference]: Start difference. First operand has 481 places, 633 transitions, 7137 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:14:32,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 656 transitions, 8507 flow [2024-06-27 20:14:42,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 656 transitions, 8408 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 20:14:42,410 INFO L231 Difference]: Finished difference. Result has 485 places, 633 transitions, 7157 flow [2024-06-27 20:14:42,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7038, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7157, PETRI_PLACES=485, PETRI_TRANSITIONS=633} [2024-06-27 20:14:42,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-27 20:14:42,410 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 633 transitions, 7157 flow [2024-06-27 20:14:42,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:42,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:42,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:42,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 20:14:42,411 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:14:42,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash 352391377, now seen corresponding path program 4 times [2024-06-27 20:14:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:42,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317790736] [2024-06-27 20:14:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:14:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:43,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317790736] [2024-06-27 20:14:43,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317790736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:43,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:43,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:43,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240660259] [2024-06-27 20:14:43,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:43,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:14:43,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 633 transitions, 7157 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:43,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:43,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:14:43,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:45,907 INFO L124 PetriNetUnfolderBase]: 4264/6731 cut-off events. [2024-06-27 20:14:45,907 INFO L125 PetriNetUnfolderBase]: For 2130863/2130863 co-relation queries the response was YES. [2024-06-27 20:14:45,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74169 conditions, 6731 events. 4264/6731 cut-off events. For 2130863/2130863 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 41448 event pairs, 788 based on Foata normal form. 2/6730 useless extension candidates. Maximal degree in co-relation 73942. Up to 6452 conditions per place. [2024-06-27 20:14:46,021 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 596 selfloop transitions, 53 changer transitions 0/653 dead transitions. [2024-06-27 20:14:46,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 653 transitions, 8533 flow [2024-06-27 20:14:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:14:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:14:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:14:46,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192411924119243 [2024-06-27 20:14:46,023 INFO L175 Difference]: Start difference. First operand has 485 places, 633 transitions, 7157 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:14:46,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 653 transitions, 8533 flow [2024-06-27 20:14:55,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 653 transitions, 8414 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:14:55,972 INFO L231 Difference]: Finished difference. Result has 486 places, 635 transitions, 7181 flow [2024-06-27 20:14:55,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7038, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7181, PETRI_PLACES=486, PETRI_TRANSITIONS=635} [2024-06-27 20:14:55,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-27 20:14:55,972 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 635 transitions, 7181 flow [2024-06-27 20:14:55,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:55,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:14:55,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:14:55,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 20:14:55,973 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:14:55,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:14:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1086478777, now seen corresponding path program 5 times [2024-06-27 20:14:55,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:14:55,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530447062] [2024-06-27 20:14:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:14:55,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:14:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:14:56,823 INFO 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 20:14:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:14:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530447062] [2024-06-27 20:14:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530447062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:14:56,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:14:56,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:14:56,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797332288] [2024-06-27 20:14:56,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:14:56,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:14:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:14:56,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:14:56,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:14:56,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:14:56,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 635 transitions, 7181 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:14:56,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:14:56,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:14:56,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:14:59,354 INFO L124 PetriNetUnfolderBase]: 4285/6764 cut-off events. [2024-06-27 20:14:59,354 INFO L125 PetriNetUnfolderBase]: For 2181861/2181861 co-relation queries the response was YES. [2024-06-27 20:14:59,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74847 conditions, 6764 events. 4285/6764 cut-off events. For 2181861/2181861 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 41680 event pairs, 787 based on Foata normal form. 2/6763 useless extension candidates. Maximal degree in co-relation 74619. Up to 6460 conditions per place. [2024-06-27 20:14:59,480 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 597 selfloop transitions, 58 changer transitions 0/659 dead transitions. [2024-06-27 20:14:59,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 659 transitions, 8931 flow [2024-06-27 20:14:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:14:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:14:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:14:59,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4173441734417344 [2024-06-27 20:14:59,482 INFO L175 Difference]: Start difference. First operand has 486 places, 635 transitions, 7181 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:14:59,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 659 transitions, 8931 flow [2024-06-27 20:15:11,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 659 transitions, 8808 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:15:11,142 INFO L231 Difference]: Finished difference. Result has 488 places, 639 transitions, 7247 flow [2024-06-27 20:15:11,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7058, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7247, PETRI_PLACES=488, PETRI_TRANSITIONS=639} [2024-06-27 20:15:11,143 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-27 20:15:11,143 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 639 transitions, 7247 flow [2024-06-27 20:15:11,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:11,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:11,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 20:15:11,143 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:15:11,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1252347697, now seen corresponding path program 6 times [2024-06-27 20:15:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131137192] [2024-06-27 20:15:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:11,994 INFO 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 20:15:11,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:11,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131137192] [2024-06-27 20:15:11,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131137192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:11,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:11,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:15:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400122815] [2024-06-27 20:15:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:15:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:15:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:15:12,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:15:12,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 639 transitions, 7247 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:12,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:12,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:15:12,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:14,363 INFO L124 PetriNetUnfolderBase]: 4280/6759 cut-off events. [2024-06-27 20:15:14,363 INFO L125 PetriNetUnfolderBase]: For 2180045/2180045 co-relation queries the response was YES. [2024-06-27 20:15:14,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74644 conditions, 6759 events. 4280/6759 cut-off events. For 2180045/2180045 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 41712 event pairs, 786 based on Foata normal form. 2/6758 useless extension candidates. Maximal degree in co-relation 74415. Up to 6476 conditions per place. [2024-06-27 20:15:14,490 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 599 selfloop transitions, 54 changer transitions 0/657 dead transitions. [2024-06-27 20:15:14,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 657 transitions, 8603 flow [2024-06-27 20:15:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:15:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:15:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 20:15:14,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4092140921409214 [2024-06-27 20:15:14,492 INFO L175 Difference]: Start difference. First operand has 488 places, 639 transitions, 7247 flow. Second operand 9 states and 151 transitions. [2024-06-27 20:15:14,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 657 transitions, 8603 flow [2024-06-27 20:15:26,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 657 transitions, 8500 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 20:15:26,058 INFO L231 Difference]: Finished difference. Result has 492 places, 639 transitions, 7257 flow [2024-06-27 20:15:26,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7144, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7257, PETRI_PLACES=492, PETRI_TRANSITIONS=639} [2024-06-27 20:15:26,059 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 450 predicate places. [2024-06-27 20:15:26,059 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 639 transitions, 7257 flow [2024-06-27 20:15:26,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:26,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:26,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 20:15:26,060 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:15:26,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:26,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1251947518, now seen corresponding path program 1 times [2024-06-27 20:15:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830529741] [2024-06-27 20:15:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:26,932 INFO 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 20:15:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830529741] [2024-06-27 20:15:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830529741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:26,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:15:26,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410083661] [2024-06-27 20:15:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:26,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:15:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:26,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:15:26,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:15:27,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:15:27,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 639 transitions, 7257 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:27,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:27,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:15:27,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:29,340 INFO L124 PetriNetUnfolderBase]: 4324/6825 cut-off events. [2024-06-27 20:15:29,341 INFO L125 PetriNetUnfolderBase]: For 2339204/2339204 co-relation queries the response was YES. [2024-06-27 20:15:29,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75429 conditions, 6825 events. 4324/6825 cut-off events. For 2339204/2339204 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 42110 event pairs, 794 based on Foata normal form. 12/6834 useless extension candidates. Maximal degree in co-relation 75198. Up to 6424 conditions per place. [2024-06-27 20:15:29,471 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 595 selfloop transitions, 68 changer transitions 0/667 dead transitions. [2024-06-27 20:15:29,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 667 transitions, 8819 flow [2024-06-27 20:15:29,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:15:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:15:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 20:15:29,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363143631436314 [2024-06-27 20:15:29,472 INFO L175 Difference]: Start difference. First operand has 492 places, 639 transitions, 7257 flow. Second operand 9 states and 161 transitions. [2024-06-27 20:15:29,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 667 transitions, 8819 flow [2024-06-27 20:15:42,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 667 transitions, 8699 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:15:42,666 INFO L231 Difference]: Finished difference. Result has 493 places, 640 transitions, 7304 flow [2024-06-27 20:15:42,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7137, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7304, PETRI_PLACES=493, PETRI_TRANSITIONS=640} [2024-06-27 20:15:42,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 451 predicate places. [2024-06-27 20:15:42,667 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 640 transitions, 7304 flow [2024-06-27 20:15:42,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:42,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:42,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 20:15:42,668 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:15:42,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:42,668 INFO L85 PathProgramCache]: Analyzing trace with hash -306596394, now seen corresponding path program 5 times [2024-06-27 20:15:42,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:42,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387157023] [2024-06-27 20:15:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:15:43,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387157023] [2024-06-27 20:15:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387157023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:15:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969274225] [2024-06-27 20:15:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:43,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:15:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:15:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:15:43,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:15:43,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 640 transitions, 7304 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:43,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:43,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:15:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:15:45,888 INFO L124 PetriNetUnfolderBase]: 4350/6865 cut-off events. [2024-06-27 20:15:45,889 INFO L125 PetriNetUnfolderBase]: For 2265516/2265519 co-relation queries the response was YES. [2024-06-27 20:15:46,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76725 conditions, 6865 events. 4350/6865 cut-off events. For 2265516/2265519 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 42339 event pairs, 803 based on Foata normal form. 4/6861 useless extension candidates. Maximal degree in co-relation 76493. Up to 6380 conditions per place. [2024-06-27 20:15:46,188 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 571 selfloop transitions, 103 changer transitions 0/678 dead transitions. [2024-06-27 20:15:46,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 678 transitions, 9448 flow [2024-06-27 20:15:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:15:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:15:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-27 20:15:46,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41260162601626016 [2024-06-27 20:15:46,190 INFO L175 Difference]: Start difference. First operand has 493 places, 640 transitions, 7304 flow. Second operand 12 states and 203 transitions. [2024-06-27 20:15:46,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 678 transitions, 9448 flow [2024-06-27 20:15:58,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 678 transitions, 9303 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:15:58,178 INFO L231 Difference]: Finished difference. Result has 499 places, 648 transitions, 7729 flow [2024-06-27 20:15:58,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7729, PETRI_PLACES=499, PETRI_TRANSITIONS=648} [2024-06-27 20:15:58,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 457 predicate places. [2024-06-27 20:15:58,179 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 648 transitions, 7729 flow [2024-06-27 20:15:58,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:58,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:15:58,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:15:58,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 20:15:58,179 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:15:58,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:15:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1190963871, now seen corresponding path program 7 times [2024-06-27 20:15:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:15:58,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624870929] [2024-06-27 20:15:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:15:58,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:15:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:15:58,941 INFO 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 20:15:58,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:15:58,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624870929] [2024-06-27 20:15:58,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624870929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:15:58,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:15:58,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:15:58,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275356842] [2024-06-27 20:15:58,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:15:58,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:15:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:15:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:15:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:15:59,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:15:59,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 648 transitions, 7729 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:15:59,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:15:59,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:15:59,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:01,152 INFO L124 PetriNetUnfolderBase]: 4392/6923 cut-off events. [2024-06-27 20:16:01,152 INFO L125 PetriNetUnfolderBase]: For 2364537/2364540 co-relation queries the response was YES. [2024-06-27 20:16:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79401 conditions, 6923 events. 4392/6923 cut-off events. For 2364537/2364540 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 42723 event pairs, 806 based on Foata normal form. 4/6919 useless extension candidates. Maximal degree in co-relation 79167. Up to 6431 conditions per place. [2024-06-27 20:16:01,434 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 585 selfloop transitions, 98 changer transitions 0/687 dead transitions. [2024-06-27 20:16:01,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 687 transitions, 10259 flow [2024-06-27 20:16:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:16:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:16:01,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 20:16:01,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41685144124168516 [2024-06-27 20:16:01,436 INFO L175 Difference]: Start difference. First operand has 499 places, 648 transitions, 7729 flow. Second operand 11 states and 188 transitions. [2024-06-27 20:16:01,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 687 transitions, 10259 flow [2024-06-27 20:16:13,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 687 transitions, 9935 flow, removed 104 selfloop flow, removed 8 redundant places. [2024-06-27 20:16:13,132 INFO L231 Difference]: Finished difference. Result has 503 places, 659 transitions, 7987 flow [2024-06-27 20:16:13,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7405, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7987, PETRI_PLACES=503, PETRI_TRANSITIONS=659} [2024-06-27 20:16:13,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-27 20:16:13,133 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 659 transitions, 7987 flow [2024-06-27 20:16:13,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:13,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:13,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:13,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 20:16:13,134 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:16:13,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1218402548, now seen corresponding path program 6 times [2024-06-27 20:16:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111663011] [2024-06-27 20:16:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:13,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:13,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:13,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111663011] [2024-06-27 20:16:13,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111663011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:13,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:13,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:16:13,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303387335] [2024-06-27 20:16:13,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:13,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:16:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:13,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:16:13,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:16:14,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:16:14,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 659 transitions, 7987 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:14,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:14,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:16:14,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:16:16,330 INFO L124 PetriNetUnfolderBase]: 4405/6941 cut-off events. [2024-06-27 20:16:16,330 INFO L125 PetriNetUnfolderBase]: For 2397137/2397140 co-relation queries the response was YES. [2024-06-27 20:16:16,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80418 conditions, 6941 events. 4405/6941 cut-off events. For 2397137/2397140 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 42822 event pairs, 801 based on Foata normal form. 3/6936 useless extension candidates. Maximal degree in co-relation 80181. Up to 6627 conditions per place. [2024-06-27 20:16:16,604 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 634 selfloop transitions, 55 changer transitions 0/693 dead transitions. [2024-06-27 20:16:16,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 693 transitions, 10048 flow [2024-06-27 20:16:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:16:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:16:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 20:16:16,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121951219512195 [2024-06-27 20:16:16,605 INFO L175 Difference]: Start difference. First operand has 503 places, 659 transitions, 7987 flow. Second operand 10 states and 169 transitions. [2024-06-27 20:16:16,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 693 transitions, 10048 flow [2024-06-27 20:16:30,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 693 transitions, 9790 flow, removed 85 selfloop flow, removed 6 redundant places. [2024-06-27 20:16:30,341 INFO L231 Difference]: Finished difference. Result has 508 places, 668 transitions, 8138 flow [2024-06-27 20:16:30,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7729, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8138, PETRI_PLACES=508, PETRI_TRANSITIONS=668} [2024-06-27 20:16:30,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-27 20:16:30,342 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 668 transitions, 8138 flow [2024-06-27 20:16:30,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:30,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:16:30,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:16:30,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 20:16:30,346 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:16:30,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:16:30,347 INFO L85 PathProgramCache]: Analyzing trace with hash -50095884, now seen corresponding path program 7 times [2024-06-27 20:16:30,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:16:30,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750167676] [2024-06-27 20:16:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:16:30,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:16:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:16:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:16:31,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:16:31,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750167676] [2024-06-27 20:16:31,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750167676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:16:31,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:16:31,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:16:31,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057853124] [2024-06-27 20:16:31,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:16:31,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:16:31,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:16:31,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:16:31,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:16:31,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2024-06-27 20:16:31,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 668 transitions, 8138 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:16:31,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:16:31,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2024-06-27 20:16:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15