./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe023_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/safe023_tso.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe023_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:24:43,350 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:43,406 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:43,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:43,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:43,428 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:43,429 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:43,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:43,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:43,431 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:43,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:43,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:43,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:43,434 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:43,434 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:43,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:43,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:43,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:43,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:43,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:43,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:43,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:43,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:43,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:43,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:43,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:43,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:43,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:43,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:43,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:43,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:43,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:43,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:43,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:43,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:43,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:43,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:43,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:43,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:43,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:43,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:43,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:43,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:43,444 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:43,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:43,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:43,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:43,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:43,703 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:43,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2024-02-07 14:24:44,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:44,966 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:44,967 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2024-02-07 14:24:44,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d000f5c/dcba693cbf664e9cb01193e97d0a83b1/FLAGb369dfa26 [2024-02-07 14:24:44,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d000f5c/dcba693cbf664e9cb01193e97d0a83b1 [2024-02-07 14:24:44,990 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:44,990 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:44,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe023_tso.yml/witness.yml [2024-02-07 14:24:45,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:45,099 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:45,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:45,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:45,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:45,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:44" (1/2) ... [2024-02-07 14:24:45,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fad999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:45, skipping insertion in model container [2024-02-07 14:24:45,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:44" (1/2) ... [2024-02-07 14:24:45,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c7858ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:45, skipping insertion in model container [2024-02-07 14:24:45,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:45" (2/2) ... [2024-02-07 14:24:45,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fad999 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45, skipping insertion in model container [2024-02-07 14:24:45,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:45" (2/2) ... [2024-02-07 14:24:45,109 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:45,178 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:45,179 INFO L76 edCorrectnessWitness]: Location invariant before [L731-L731] (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 2)) && (__unbuffered_p0_EAX <= 127)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2) [2024-02-07 14:24:45,179 INFO L76 edCorrectnessWitness]: Location invariant before [L766-L766] 1 <= __unbuffered_cnt [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] 1 <= __unbuffered_cnt [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L794-L794] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L758-L758] ((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] y == 2 [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L761-L761] (((0 <= __unbuffered_p2_EBX) && (__unbuffered_p2_EBX <= 2)) && (__unbuffered_p2_EBX <= 127)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2) [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L760-L760] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:24:45,180 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L750-L750] 0 <= __unbuffered_cnt [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L735-L735] 0 <= __unbuffered_cnt [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L795-L795] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L736-L736] 1 <= __unbuffered_cnt [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] 0 <= __unbuffered_cnt [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L788-L788] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:45,181 INFO L76 edCorrectnessWitness]: Location invariant before [L746-L746] x == 1 [2024-02-07 14:24:45,182 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] y == 1 [2024-02-07 14:24:45,182 INFO L76 edCorrectnessWitness]: Location invariant before [L757-L757] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 14:24:45,182 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] (((((0 <= __unbuffered_p2_EBX) && (__unbuffered_p2_EBX <= 2)) && (__unbuffered_p2_EBX <= 127)) && (y == 2)) && ((__unbuffered_p0_EAX == 1 && (__unbuffered_p2_EAX == 1 || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) || ((((((0 <= __unbuffered_p0_EAX && 0 <= __unbuffered_p2_EAX) && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2) [2024-02-07 14:24:45,182 INFO L76 edCorrectnessWitness]: Location invariant before [L765-L765] 0 <= __unbuffered_cnt [2024-02-07 14:24:45,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:45,371 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i[945,958] [2024-02-07 14:24:45,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:45,548 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:45,579 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:24:45,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:45,652 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:45,652 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45 WrapperNode [2024-02-07 14:24:45,656 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:45,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:45,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:45,657 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:45,662 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 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,672 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 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,703 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-02-07 14:24:45,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:45,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:45,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:45,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:45,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,746 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 14:24:45,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:45,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:45,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:45,765 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:45,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (1/1) ... [2024-02-07 14:24:45,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:45,829 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) [2024-02-07 14:24:45,842 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 [2024-02-07 14:24:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:24:45,858 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:24:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:24:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:45,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:45,860 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:24:45,954 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:45,956 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:46,134 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:46,134 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:46,236 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:46,237 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:46,237 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:46 BoogieIcfgContainer [2024-02-07 14:24:46,237 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:46,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:46,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:46,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:46,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:44" (1/4) ... [2024-02-07 14:24:46,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4379a2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:46, skipping insertion in model container [2024-02-07 14:24:46,243 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:45" (2/4) ... [2024-02-07 14:24:46,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4379a2fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:46, skipping insertion in model container [2024-02-07 14:24:46,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:45" (3/4) ... [2024-02-07 14:24:46,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4379a2fb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:46, skipping insertion in model container [2024-02-07 14:24:46,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:46" (4/4) ... [2024-02-07 14:24:46,246 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2024-02-07 14:24:46,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:46,260 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-02-07 14:24:46,260 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:46,304 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 62 transitions, 136 flow [2024-02-07 14:24:46,368 INFO L124 PetriNetUnfolderBase]: 1/59 cut-off events. [2024-02-07 14:24:46,369 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:46,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 190 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2024-02-07 14:24:46,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 62 transitions, 136 flow [2024-02-07 14:24:46,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 59 transitions, 127 flow [2024-02-07 14:24:46,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:46,394 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;@55c12952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:46,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-02-07 14:24:46,397 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:46,397 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:46,397 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:46,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:46,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:46,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:46,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 9796008, now seen corresponding path program 1 times [2024-02-07 14:24:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:46,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269248714] [2024-02-07 14:24:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:46,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:46,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269248714] [2024-02-07 14:24:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269248714] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:46,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:46,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:46,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697909045] [2024-02-07 14:24:46,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:46,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:24:46,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:46,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:24:46,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:24:46,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:46,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:46,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:46,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:46,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:47,756 INFO L124 PetriNetUnfolderBase]: 7577/12719 cut-off events. [2024-02-07 14:24:47,757 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 14:24:47,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23524 conditions, 12719 events. 7577/12719 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 100073 event pairs, 7577 based on Foata normal form. 294/9000 useless extension candidates. Maximal degree in co-relation 23513. Up to 10701 conditions per place. [2024-02-07 14:24:47,829 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 32 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-02-07 14:24:47,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 167 flow [2024-02-07 14:24:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:24:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:24:47,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-02-07 14:24:47,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6451612903225806 [2024-02-07 14:24:47,839 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 127 flow. Second operand 2 states and 80 transitions. [2024-02-07 14:24:47,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 167 flow [2024-02-07 14:24:47,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:47,844 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 100 flow [2024-02-07 14:24:47,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-02-07 14:24:47,848 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2024-02-07 14:24:47,848 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 100 flow [2024-02-07 14:24:47,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:47,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:47,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:24:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:47,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:47,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:47,849 INFO L85 PathProgramCache]: Analyzing trace with hash 824040298, now seen corresponding path program 1 times [2024-02-07 14:24:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512358893] [2024-02-07 14:24:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512358893] [2024-02-07 14:24:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512358893] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:47,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:47,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042663309] [2024-02-07 14:24:47,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:47,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:47,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:47,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:47,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:47,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:49,066 INFO L124 PetriNetUnfolderBase]: 11197/18694 cut-off events. [2024-02-07 14:24:49,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:49,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34937 conditions, 18694 events. 11197/18694 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 155119 event pairs, 4819 based on Foata normal form. 0/13649 useless extension candidates. Maximal degree in co-relation 34934. Up to 9015 conditions per place. [2024-02-07 14:24:49,150 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 56 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-02-07 14:24:49,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 73 transitions, 272 flow [2024-02-07 14:24:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-02-07 14:24:49,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6182795698924731 [2024-02-07 14:24:49,152 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 100 flow. Second operand 3 states and 115 transitions. [2024-02-07 14:24:49,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 73 transitions, 272 flow [2024-02-07 14:24:49,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:49,154 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 116 flow [2024-02-07 14:24:49,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-02-07 14:24:49,155 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2024-02-07 14:24:49,155 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 116 flow [2024-02-07 14:24:49,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:49,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:49,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:49,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:49,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:49,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 226761029, now seen corresponding path program 1 times [2024-02-07 14:24:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911905108] [2024-02-07 14:24:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:49,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911905108] [2024-02-07 14:24:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911905108] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:49,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118013014] [2024-02-07 14:24:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:49,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:49,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:49,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:49,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:49,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:49,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:49,964 INFO L124 PetriNetUnfolderBase]: 8602/13245 cut-off events. [2024-02-07 14:24:49,964 INFO L125 PetriNetUnfolderBase]: For 2053/2080 co-relation queries the response was YES. [2024-02-07 14:24:49,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27682 conditions, 13245 events. 8602/13245 cut-off events. For 2053/2080 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 92413 event pairs, 2894 based on Foata normal form. 0/10976 useless extension candidates. Maximal degree in co-relation 27677. Up to 10793 conditions per place. [2024-02-07 14:24:50,022 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 53 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-02-07 14:24:50,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 296 flow [2024-02-07 14:24:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:50,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-02-07 14:24:50,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075268817204301 [2024-02-07 14:24:50,028 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 116 flow. Second operand 3 states and 113 transitions. [2024-02-07 14:24:50,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 296 flow [2024-02-07 14:24:50,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:50,031 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 146 flow [2024-02-07 14:24:50,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-02-07 14:24:50,032 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2024-02-07 14:24:50,034 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 146 flow [2024-02-07 14:24:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:50,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:50,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:50,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:50,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:50,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash 226762434, now seen corresponding path program 1 times [2024-02-07 14:24:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225451968] [2024-02-07 14:24:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:50,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:50,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:50,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225451968] [2024-02-07 14:24:50,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225451968] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:50,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:50,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030315723] [2024-02-07 14:24:50,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:50,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:50,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:50,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:50,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:50,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:50,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:50,872 INFO L124 PetriNetUnfolderBase]: 8274/13160 cut-off events. [2024-02-07 14:24:50,873 INFO L125 PetriNetUnfolderBase]: For 2711/2735 co-relation queries the response was YES. [2024-02-07 14:24:50,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30668 conditions, 13160 events. 8274/13160 cut-off events. For 2711/2735 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 97700 event pairs, 2618 based on Foata normal form. 0/11358 useless extension candidates. Maximal degree in co-relation 30662. Up to 9659 conditions per place. [2024-02-07 14:24:50,923 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 58 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-02-07 14:24:50,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 340 flow [2024-02-07 14:24:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:50,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-02-07 14:24:50,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860215053763441 [2024-02-07 14:24:50,924 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 146 flow. Second operand 3 states and 109 transitions. [2024-02-07 14:24:50,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 340 flow [2024-02-07 14:24:50,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:50,926 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 150 flow [2024-02-07 14:24:50,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-02-07 14:24:50,927 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-02-07 14:24:50,927 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 150 flow [2024-02-07 14:24:50,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:50,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:50,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:50,928 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:50,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1560342343, now seen corresponding path program 1 times [2024-02-07 14:24:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855378805] [2024-02-07 14:24:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:50,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855378805] [2024-02-07 14:24:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855378805] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:50,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:50,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360662517] [2024-02-07 14:24:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:50,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:50,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 14:24:50,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:50,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:50,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 14:24:50,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:51,648 INFO L124 PetriNetUnfolderBase]: 8274/13929 cut-off events. [2024-02-07 14:24:51,648 INFO L125 PetriNetUnfolderBase]: For 3834/3889 co-relation queries the response was YES. [2024-02-07 14:24:51,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32431 conditions, 13929 events. 8274/13929 cut-off events. For 3834/3889 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 111997 event pairs, 7708 based on Foata normal form. 0/11863 useless extension candidates. Maximal degree in co-relation 32424. Up to 12105 conditions per place. [2024-02-07 14:24:51,718 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 35 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-02-07 14:24:51,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 50 transitions, 220 flow [2024-02-07 14:24:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-02-07 14:24:51,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-07 14:24:51,719 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 150 flow. Second operand 3 states and 84 transitions. [2024-02-07 14:24:51,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 50 transitions, 220 flow [2024-02-07 14:24:51,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:51,722 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 146 flow [2024-02-07 14:24:51,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2024-02-07 14:24:51,723 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-02-07 14:24:51,723 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 146 flow [2024-02-07 14:24:51,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:51,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:51,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:51,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:51,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1560298733, now seen corresponding path program 1 times [2024-02-07 14:24:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:51,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746631227] [2024-02-07 14:24:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746631227] [2024-02-07 14:24:51,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746631227] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:51,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:51,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:51,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568986902] [2024-02-07 14:24:51,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:51,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:51,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:51,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:51,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:51,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:51,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:51,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:51,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:51,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:52,516 INFO L124 PetriNetUnfolderBase]: 7999/13496 cut-off events. [2024-02-07 14:24:52,516 INFO L125 PetriNetUnfolderBase]: For 2760/2760 co-relation queries the response was YES. [2024-02-07 14:24:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30768 conditions, 13496 events. 7999/13496 cut-off events. For 2760/2760 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 107099 event pairs, 4459 based on Foata normal form. 9/11706 useless extension candidates. Maximal degree in co-relation 30761. Up to 11653 conditions per place. [2024-02-07 14:24:52,586 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 47 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-02-07 14:24:52,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 64 transitions, 284 flow [2024-02-07 14:24:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-02-07 14:24:52,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-02-07 14:24:52,588 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 146 flow. Second operand 3 states and 103 transitions. [2024-02-07 14:24:52,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 64 transitions, 284 flow [2024-02-07 14:24:52,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:52,590 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 164 flow [2024-02-07 14:24:52,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-02-07 14:24:52,591 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-02-07 14:24:52,592 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 164 flow [2024-02-07 14:24:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:52,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:52,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:52,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:52,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:52,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:52,593 INFO L85 PathProgramCache]: Analyzing trace with hash 100285117, now seen corresponding path program 1 times [2024-02-07 14:24:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616381244] [2024-02-07 14:24:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:52,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:52,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:52,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616381244] [2024-02-07 14:24:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616381244] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:52,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:52,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321916054] [2024-02-07 14:24:52,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:52,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:52,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:52,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:52,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:52,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:52,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:52,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:53,246 INFO L124 PetriNetUnfolderBase]: 6594/10847 cut-off events. [2024-02-07 14:24:53,246 INFO L125 PetriNetUnfolderBase]: For 3616/3616 co-relation queries the response was YES. [2024-02-07 14:24:53,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25410 conditions, 10847 events. 6594/10847 cut-off events. For 3616/3616 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 80702 event pairs, 2917 based on Foata normal form. 454/9844 useless extension candidates. Maximal degree in co-relation 25402. Up to 4930 conditions per place. [2024-02-07 14:24:53,309 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 58 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-02-07 14:24:53,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 353 flow [2024-02-07 14:24:53,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-02-07 14:24:53,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2024-02-07 14:24:53,311 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 164 flow. Second operand 3 states and 110 transitions. [2024-02-07 14:24:53,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 353 flow [2024-02-07 14:24:53,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:53,315 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 155 flow [2024-02-07 14:24:53,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-02-07 14:24:53,316 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-02-07 14:24:53,316 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 155 flow [2024-02-07 14:24:53,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:53,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:53,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:53,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:53,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:53,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash -513057781, now seen corresponding path program 1 times [2024-02-07 14:24:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412800334] [2024-02-07 14:24:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:53,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:53,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412800334] [2024-02-07 14:24:53,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412800334] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:53,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:53,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69797446] [2024-02-07 14:24:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:53,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:53,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:53,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:53,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:53,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:53,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:53,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:53,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:53,894 INFO L124 PetriNetUnfolderBase]: 5886/9735 cut-off events. [2024-02-07 14:24:53,894 INFO L125 PetriNetUnfolderBase]: For 3551/3551 co-relation queries the response was YES. [2024-02-07 14:24:53,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22954 conditions, 9735 events. 5886/9735 cut-off events. For 3551/3551 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 70882 event pairs, 2095 based on Foata normal form. 310/8682 useless extension candidates. Maximal degree in co-relation 22946. Up to 6873 conditions per place. [2024-02-07 14:24:53,951 INFO L140 encePairwiseOnDemand]: 60/62 looper letters, 55 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-02-07 14:24:53,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 333 flow [2024-02-07 14:24:53,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 14:24:53,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-02-07 14:24:53,953 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 155 flow. Second operand 3 states and 104 transitions. [2024-02-07 14:24:53,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 333 flow [2024-02-07 14:24:53,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 70 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:53,956 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 148 flow [2024-02-07 14:24:53,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-02-07 14:24:53,957 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-02-07 14:24:53,957 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 148 flow [2024-02-07 14:24:53,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:53,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:53,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:24:53,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:53,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash -545395974, now seen corresponding path program 1 times [2024-02-07 14:24:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:53,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731249300] [2024-02-07 14:24:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:53,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:54,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731249300] [2024-02-07 14:24:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731249300] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:54,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:54,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939004496] [2024-02-07 14:24:54,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:54,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:54,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:54,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:54,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:54,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 14:24:54,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:54,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:54,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 14:24:54,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:54,629 INFO L124 PetriNetUnfolderBase]: 5577/9968 cut-off events. [2024-02-07 14:24:54,630 INFO L125 PetriNetUnfolderBase]: For 3215/3215 co-relation queries the response was YES. [2024-02-07 14:24:54,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22503 conditions, 9968 events. 5577/9968 cut-off events. For 3215/3215 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 79006 event pairs, 1207 based on Foata normal form. 305/8729 useless extension candidates. Maximal degree in co-relation 22496. Up to 4681 conditions per place. [2024-02-07 14:24:54,717 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 60 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2024-02-07 14:24:54,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 390 flow [2024-02-07 14:24:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-02-07 14:24:54,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201612903225806 [2024-02-07 14:24:54,741 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 148 flow. Second operand 4 states and 129 transitions. [2024-02-07 14:24:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 390 flow [2024-02-07 14:24:54,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:54,744 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 173 flow [2024-02-07 14:24:54,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2024-02-07 14:24:54,744 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2024-02-07 14:24:54,745 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 173 flow [2024-02-07 14:24:54,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:54,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:54,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:54,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:24:54,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:54,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:54,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1747831809, now seen corresponding path program 1 times [2024-02-07 14:24:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301736569] [2024-02-07 14:24:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301736569] [2024-02-07 14:24:54,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301736569] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:54,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:54,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6490615] [2024-02-07 14:24:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:54,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:54,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:54,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:54,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:54,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:54,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:54,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:55,186 INFO L124 PetriNetUnfolderBase]: 3160/5747 cut-off events. [2024-02-07 14:24:55,186 INFO L125 PetriNetUnfolderBase]: For 3248/3268 co-relation queries the response was YES. [2024-02-07 14:24:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13655 conditions, 5747 events. 3160/5747 cut-off events. For 3248/3268 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 41603 event pairs, 1444 based on Foata normal form. 166/5609 useless extension candidates. Maximal degree in co-relation 13646. Up to 4410 conditions per place. [2024-02-07 14:24:55,206 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 39 selfloop transitions, 3 changer transitions 2/58 dead transitions. [2024-02-07 14:24:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 291 flow [2024-02-07 14:24:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-02-07 14:24:55,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-02-07 14:24:55,207 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 173 flow. Second operand 3 states and 98 transitions. [2024-02-07 14:24:55,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 291 flow [2024-02-07 14:24:55,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:55,209 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 151 flow [2024-02-07 14:24:55,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2024-02-07 14:24:55,210 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2024-02-07 14:24:55,210 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 151 flow [2024-02-07 14:24:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:55,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:55,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:55,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:24:55,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:55,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1769238206, now seen corresponding path program 1 times [2024-02-07 14:24:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:55,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402913723] [2024-02-07 14:24:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402913723] [2024-02-07 14:24:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402913723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:55,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854872370] [2024-02-07 14:24:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:55,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:55,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2024-02-07 14:24:55,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:55,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:55,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:55,547 INFO L124 PetriNetUnfolderBase]: 2533/4606 cut-off events. [2024-02-07 14:24:55,548 INFO L125 PetriNetUnfolderBase]: For 2609/2609 co-relation queries the response was YES. [2024-02-07 14:24:55,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 4606 events. 2533/4606 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32207 event pairs, 1190 based on Foata normal form. 4/4432 useless extension candidates. Maximal degree in co-relation 10941. Up to 3648 conditions per place. [2024-02-07 14:24:55,567 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 51 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-02-07 14:24:55,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 382 flow [2024-02-07 14:24:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-02-07 14:24:55,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080645161290323 [2024-02-07 14:24:55,569 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 151 flow. Second operand 4 states and 126 transitions. [2024-02-07 14:24:55,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 382 flow [2024-02-07 14:24:55,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 351 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:55,572 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 200 flow [2024-02-07 14:24:55,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2024-02-07 14:24:55,572 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2024-02-07 14:24:55,573 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 200 flow [2024-02-07 14:24:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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) [2024-02-07 14:24:55,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:55,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:55,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:24:55,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:55,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2130606683, now seen corresponding path program 1 times [2024-02-07 14:24:55,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:55,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877281598] [2024-02-07 14:24:55,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:55,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:55,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:55,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:55,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877281598] [2024-02-07 14:24:55,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877281598] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:55,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:55,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069168371] [2024-02-07 14:24:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:55,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:55,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:55,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:55,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 14:24:55,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:55,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:55,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 14:24:55,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:55,858 INFO L124 PetriNetUnfolderBase]: 1835/3336 cut-off events. [2024-02-07 14:24:55,858 INFO L125 PetriNetUnfolderBase]: For 2198/2198 co-relation queries the response was YES. [2024-02-07 14:24:55,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8303 conditions, 3336 events. 1835/3336 cut-off events. For 2198/2198 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21055 event pairs, 185 based on Foata normal form. 166/3374 useless extension candidates. Maximal degree in co-relation 8294. Up to 1001 conditions per place. [2024-02-07 14:24:55,870 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 73 selfloop transitions, 8 changer transitions 1/96 dead transitions. [2024-02-07 14:24:55,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 96 transitions, 556 flow [2024-02-07 14:24:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-02-07 14:24:55,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935483870967742 [2024-02-07 14:24:55,872 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 200 flow. Second operand 5 states and 153 transitions. [2024-02-07 14:24:55,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 96 transitions, 556 flow [2024-02-07 14:24:55,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 96 transitions, 552 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:55,874 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 246 flow [2024-02-07 14:24:55,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-02-07 14:24:55,875 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2024-02-07 14:24:55,875 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 246 flow [2024-02-07 14:24:55,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:55,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:55,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:55,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:24:55,876 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:55,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1750945721, now seen corresponding path program 1 times [2024-02-07 14:24:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866002101] [2024-02-07 14:24:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866002101] [2024-02-07 14:24:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866002101] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584097130] [2024-02-07 14:24:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:55,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:55,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:55,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:55,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:55,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:56,245 INFO L124 PetriNetUnfolderBase]: 1740/3321 cut-off events. [2024-02-07 14:24:56,245 INFO L125 PetriNetUnfolderBase]: For 3850/3850 co-relation queries the response was YES. [2024-02-07 14:24:56,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9065 conditions, 3321 events. 1740/3321 cut-off events. For 3850/3850 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 21825 event pairs, 888 based on Foata normal form. 8/3193 useless extension candidates. Maximal degree in co-relation 9053. Up to 2361 conditions per place. [2024-02-07 14:24:56,260 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 68 selfloop transitions, 26 changer transitions 0/108 dead transitions. [2024-02-07 14:24:56,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 108 transitions, 691 flow [2024-02-07 14:24:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-02-07 14:24:56,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-02-07 14:24:56,262 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 246 flow. Second operand 8 states and 220 transitions. [2024-02-07 14:24:56,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 108 transitions, 691 flow [2024-02-07 14:24:56,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 108 transitions, 646 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:56,269 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 449 flow [2024-02-07 14:24:56,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2024-02-07 14:24:56,269 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2024-02-07 14:24:56,269 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 449 flow [2024-02-07 14:24:56,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:56,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:56,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:56,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:24:56,270 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:56,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1790068517, now seen corresponding path program 2 times [2024-02-07 14:24:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:56,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307361046] [2024-02-07 14:24:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:56,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:56,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307361046] [2024-02-07 14:24:56,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307361046] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:56,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:56,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:56,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437545356] [2024-02-07 14:24:56,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:56,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:56,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:56,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:56,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:56,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:56,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:56,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:56,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:56,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:56,640 INFO L124 PetriNetUnfolderBase]: 1896/3539 cut-off events. [2024-02-07 14:24:56,640 INFO L125 PetriNetUnfolderBase]: For 5158/5158 co-relation queries the response was YES. [2024-02-07 14:24:56,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10431 conditions, 3539 events. 1896/3539 cut-off events. For 5158/5158 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 23157 event pairs, 901 based on Foata normal form. 8/3427 useless extension candidates. Maximal degree in co-relation 10415. Up to 1946 conditions per place. [2024-02-07 14:24:56,656 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 84 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2024-02-07 14:24:56,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 936 flow [2024-02-07 14:24:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:56,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-02-07 14:24:56,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861751152073733 [2024-02-07 14:24:56,658 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 449 flow. Second operand 7 states and 211 transitions. [2024-02-07 14:24:56,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 936 flow [2024-02-07 14:24:56,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 912 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:56,664 INFO L231 Difference]: Finished difference. Result has 84 places, 81 transitions, 550 flow [2024-02-07 14:24:56,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=550, PETRI_PLACES=84, PETRI_TRANSITIONS=81} [2024-02-07 14:24:56,664 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2024-02-07 14:24:56,665 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 81 transitions, 550 flow [2024-02-07 14:24:56,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:56,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:56,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:56,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:24:56,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:56,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:56,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1187759505, now seen corresponding path program 3 times [2024-02-07 14:24:56,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:56,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568800075] [2024-02-07 14:24:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:56,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:56,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:56,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568800075] [2024-02-07 14:24:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568800075] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:56,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:56,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204633585] [2024-02-07 14:24:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:56,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:56,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:56,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:56,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:56,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 81 transitions, 550 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:56,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:56,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:56,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:57,056 INFO L124 PetriNetUnfolderBase]: 2188/4156 cut-off events. [2024-02-07 14:24:57,057 INFO L125 PetriNetUnfolderBase]: For 8478/8478 co-relation queries the response was YES. [2024-02-07 14:24:57,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13032 conditions, 4156 events. 2188/4156 cut-off events. For 8478/8478 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 28201 event pairs, 888 based on Foata normal form. 8/4001 useless extension candidates. Maximal degree in co-relation 13013. Up to 2894 conditions per place. [2024-02-07 14:24:57,078 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 92 selfloop transitions, 23 changer transitions 0/129 dead transitions. [2024-02-07 14:24:57,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 129 transitions, 1029 flow [2024-02-07 14:24:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-02-07 14:24:57,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-02-07 14:24:57,079 INFO L175 Difference]: Start difference. First operand has 84 places, 81 transitions, 550 flow. Second operand 5 states and 160 transitions. [2024-02-07 14:24:57,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 129 transitions, 1029 flow [2024-02-07 14:24:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 931 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:57,088 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 644 flow [2024-02-07 14:24:57,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-02-07 14:24:57,089 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 18 predicate places. [2024-02-07 14:24:57,089 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 644 flow [2024-02-07 14:24:57,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:57,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:57,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:57,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 14:24:57,090 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:57,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1347947991, now seen corresponding path program 4 times [2024-02-07 14:24:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304566039] [2024-02-07 14:24:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:57,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304566039] [2024-02-07 14:24:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304566039] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:57,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:57,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:57,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989052340] [2024-02-07 14:24:57,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:57,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:57,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:57,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:57,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:57,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:57,520 INFO L124 PetriNetUnfolderBase]: 2340/4474 cut-off events. [2024-02-07 14:24:57,520 INFO L125 PetriNetUnfolderBase]: For 10740/10740 co-relation queries the response was YES. [2024-02-07 14:24:57,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14216 conditions, 4474 events. 2340/4474 cut-off events. For 10740/10740 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31172 event pairs, 918 based on Foata normal form. 8/4306 useless extension candidates. Maximal degree in co-relation 14196. Up to 2434 conditions per place. [2024-02-07 14:24:57,541 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 94 selfloop transitions, 47 changer transitions 0/155 dead transitions. [2024-02-07 14:24:57,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 155 transitions, 1248 flow [2024-02-07 14:24:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:57,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:57,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 239 transitions. [2024-02-07 14:24:57,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48185483870967744 [2024-02-07 14:24:57,543 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 644 flow. Second operand 8 states and 239 transitions. [2024-02-07 14:24:57,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 155 transitions, 1248 flow [2024-02-07 14:24:57,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 155 transitions, 1193 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:57,557 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 828 flow [2024-02-07 14:24:57,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=828, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2024-02-07 14:24:57,558 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 27 predicate places. [2024-02-07 14:24:57,558 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 828 flow [2024-02-07 14:24:57,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:57,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:57,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:57,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 14:24:57,559 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:57,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash -155658922, now seen corresponding path program 1 times [2024-02-07 14:24:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032176566] [2024-02-07 14:24:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:57,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:57,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032176566] [2024-02-07 14:24:57,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032176566] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:57,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:57,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:57,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112294566] [2024-02-07 14:24:57,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:57,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:57,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:57,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:58,126 INFO L124 PetriNetUnfolderBase]: 2452/4680 cut-off events. [2024-02-07 14:24:58,126 INFO L125 PetriNetUnfolderBase]: For 15395/15395 co-relation queries the response was YES. [2024-02-07 14:24:58,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15904 conditions, 4680 events. 2452/4680 cut-off events. For 15395/15395 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 32881 event pairs, 630 based on Foata normal form. 4/4487 useless extension candidates. Maximal degree in co-relation 15880. Up to 3177 conditions per place. [2024-02-07 14:24:58,146 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 124 selfloop transitions, 16 changer transitions 0/154 dead transitions. [2024-02-07 14:24:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 154 transitions, 1354 flow [2024-02-07 14:24:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-02-07 14:24:58,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 14:24:58,147 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 828 flow. Second operand 6 states and 186 transitions. [2024-02-07 14:24:58,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 154 transitions, 1354 flow [2024-02-07 14:24:58,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1260 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:58,164 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 817 flow [2024-02-07 14:24:58,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=817, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2024-02-07 14:24:58,165 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 31 predicate places. [2024-02-07 14:24:58,165 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 817 flow [2024-02-07 14:24:58,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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) [2024-02-07 14:24:58,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:58,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:58,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 14:24:58,165 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:58,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:58,166 INFO L85 PathProgramCache]: Analyzing trace with hash -586349988, now seen corresponding path program 2 times [2024-02-07 14:24:58,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:58,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185219418] [2024-02-07 14:24:58,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185219418] [2024-02-07 14:24:58,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185219418] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:58,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:58,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536936193] [2024-02-07 14:24:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:58,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:58,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:58,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:58,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:58,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 817 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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) [2024-02-07 14:24:58,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:58,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:58,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:58,607 INFO L124 PetriNetUnfolderBase]: 2444/4671 cut-off events. [2024-02-07 14:24:58,607 INFO L125 PetriNetUnfolderBase]: For 13266/13266 co-relation queries the response was YES. [2024-02-07 14:24:58,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15531 conditions, 4671 events. 2444/4671 cut-off events. For 13266/13266 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 32873 event pairs, 578 based on Foata normal form. 4/4467 useless extension candidates. Maximal degree in co-relation 15505. Up to 3173 conditions per place. [2024-02-07 14:24:58,633 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 114 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2024-02-07 14:24:58,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 1258 flow [2024-02-07 14:24:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-02-07 14:24:58,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 14:24:58,635 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 817 flow. Second operand 5 states and 155 transitions. [2024-02-07 14:24:58,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 1258 flow [2024-02-07 14:24:58,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 1235 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:58,653 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 831 flow [2024-02-07 14:24:58,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=831, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2024-02-07 14:24:58,654 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2024-02-07 14:24:58,654 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 831 flow [2024-02-07 14:24:58,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 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) [2024-02-07 14:24:58,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:58,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:58,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 14:24:58,655 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:58,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:58,655 INFO L85 PathProgramCache]: Analyzing trace with hash 768938189, now seen corresponding path program 1 times [2024-02-07 14:24:58,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:58,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273942679] [2024-02-07 14:24:58,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:58,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:58,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:58,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273942679] [2024-02-07 14:24:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273942679] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:58,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652125101] [2024-02-07 14:24:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:58,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:58,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:58,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 62 [2024-02-07 14:24:58,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 831 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:58,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:58,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 62 [2024-02-07 14:24:58,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:58,976 INFO L124 PetriNetUnfolderBase]: 1796/2971 cut-off events. [2024-02-07 14:24:58,977 INFO L125 PetriNetUnfolderBase]: For 10378/10378 co-relation queries the response was YES. [2024-02-07 14:24:58,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11081 conditions, 2971 events. 1796/2971 cut-off events. For 10378/10378 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16375 event pairs, 162 based on Foata normal form. 120/3063 useless extension candidates. Maximal degree in co-relation 11054. Up to 1040 conditions per place. [2024-02-07 14:24:58,991 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 164 selfloop transitions, 11 changer transitions 1/190 dead transitions. [2024-02-07 14:24:58,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 190 transitions, 1884 flow [2024-02-07 14:24:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-02-07 14:24:58,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-02-07 14:24:58,993 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 831 flow. Second operand 6 states and 165 transitions. [2024-02-07 14:24:58,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 190 transitions, 1884 flow [2024-02-07 14:24:59,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 190 transitions, 1746 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-02-07 14:24:59,003 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 794 flow [2024-02-07 14:24:59,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-02-07 14:24:59,004 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 34 predicate places. [2024-02-07 14:24:59,004 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 794 flow [2024-02-07 14:24:59,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:59,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:59,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 14:24:59,004 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:59,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash 822856519, now seen corresponding path program 1 times [2024-02-07 14:24:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:59,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516743547] [2024-02-07 14:24:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:59,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:59,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:59,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516743547] [2024-02-07 14:24:59,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516743547] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:59,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:59,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527281641] [2024-02-07 14:24:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:59,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:59,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:59,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 794 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:59,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:59,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:59,485 INFO L124 PetriNetUnfolderBase]: 1834/3250 cut-off events. [2024-02-07 14:24:59,486 INFO L125 PetriNetUnfolderBase]: For 10007/10007 co-relation queries the response was YES. [2024-02-07 14:24:59,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11767 conditions, 3250 events. 1834/3250 cut-off events. For 10007/10007 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20061 event pairs, 349 based on Foata normal form. 8/3221 useless extension candidates. Maximal degree in co-relation 11743. Up to 1907 conditions per place. [2024-02-07 14:24:59,501 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 144 selfloop transitions, 29 changer transitions 0/187 dead transitions. [2024-02-07 14:24:59,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 187 transitions, 1619 flow [2024-02-07 14:24:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:24:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:24:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-02-07 14:24:59,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-02-07 14:24:59,503 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 794 flow. Second operand 10 states and 279 transitions. [2024-02-07 14:24:59,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 187 transitions, 1619 flow [2024-02-07 14:24:59,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 187 transitions, 1426 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-02-07 14:24:59,521 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 864 flow [2024-02-07 14:24:59,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=864, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2024-02-07 14:24:59,521 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 39 predicate places. [2024-02-07 14:24:59,522 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 864 flow [2024-02-07 14:24:59,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:59,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:59,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 14:24:59,522 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:59,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:59,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1224556191, now seen corresponding path program 2 times [2024-02-07 14:24:59,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401613527] [2024-02-07 14:24:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:59,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:59,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401613527] [2024-02-07 14:24:59,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401613527] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:59,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:59,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:24:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872668387] [2024-02-07 14:24:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:59,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:59,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:24:59,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 864 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:59,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:24:59,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:59,997 INFO L124 PetriNetUnfolderBase]: 2170/3962 cut-off events. [2024-02-07 14:24:59,998 INFO L125 PetriNetUnfolderBase]: For 10730/10730 co-relation queries the response was YES. [2024-02-07 14:25:00,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12793 conditions, 3962 events. 2170/3962 cut-off events. For 10730/10730 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 25758 event pairs, 770 based on Foata normal form. 8/3901 useless extension candidates. Maximal degree in co-relation 12769. Up to 1264 conditions per place. [2024-02-07 14:25:00,018 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 154 selfloop transitions, 31 changer transitions 0/199 dead transitions. [2024-02-07 14:25:00,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 199 transitions, 1598 flow [2024-02-07 14:25:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:25:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:25:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 244 transitions. [2024-02-07 14:25:00,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49193548387096775 [2024-02-07 14:25:00,020 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 864 flow. Second operand 8 states and 244 transitions. [2024-02-07 14:25:00,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 199 transitions, 1598 flow [2024-02-07 14:25:00,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 199 transitions, 1508 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:00,035 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 859 flow [2024-02-07 14:25:00,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=859, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-02-07 14:25:00,036 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2024-02-07 14:25:00,036 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 859 flow [2024-02-07 14:25:00,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:00,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:00,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:00,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-07 14:25:00,036 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:00,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1798919061, now seen corresponding path program 3 times [2024-02-07 14:25:00,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:00,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472110133] [2024-02-07 14:25:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:00,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:00,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:00,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472110133] [2024-02-07 14:25:00,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472110133] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:00,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:00,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:00,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102576996] [2024-02-07 14:25:00,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:00,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:00,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:00,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:00,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:00,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:00,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 859 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:00,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:00,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:00,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:00,659 INFO L124 PetriNetUnfolderBase]: 2574/4749 cut-off events. [2024-02-07 14:25:00,660 INFO L125 PetriNetUnfolderBase]: For 13154/13154 co-relation queries the response was YES. [2024-02-07 14:25:00,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14706 conditions, 4749 events. 2574/4749 cut-off events. For 13154/13154 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32288 event pairs, 582 based on Foata normal form. 8/4669 useless extension candidates. Maximal degree in co-relation 14681. Up to 2749 conditions per place. [2024-02-07 14:25:00,682 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 160 selfloop transitions, 34 changer transitions 0/208 dead transitions. [2024-02-07 14:25:00,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 208 transitions, 1669 flow [2024-02-07 14:25:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 14:25:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 14:25:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 305 transitions. [2024-02-07 14:25:00,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472140762463343 [2024-02-07 14:25:00,684 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 859 flow. Second operand 11 states and 305 transitions. [2024-02-07 14:25:00,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 208 transitions, 1669 flow [2024-02-07 14:25:00,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 208 transitions, 1585 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-02-07 14:25:00,701 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 940 flow [2024-02-07 14:25:00,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=940, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-02-07 14:25:00,702 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 53 predicate places. [2024-02-07 14:25:00,702 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 940 flow [2024-02-07 14:25:00,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:00,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:00,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:00,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-07 14:25:00,703 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:00,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash -184849043, now seen corresponding path program 4 times [2024-02-07 14:25:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993846191] [2024-02-07 14:25:00,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:00,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:00,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993846191] [2024-02-07 14:25:00,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993846191] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:00,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:00,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:00,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527660309] [2024-02-07 14:25:00,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:00,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:00,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:00,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:00,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 940 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:00,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:00,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:00,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:01,338 INFO L124 PetriNetUnfolderBase]: 2782/5154 cut-off events. [2024-02-07 14:25:01,339 INFO L125 PetriNetUnfolderBase]: For 15215/15215 co-relation queries the response was YES. [2024-02-07 14:25:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16154 conditions, 5154 events. 2782/5154 cut-off events. For 15215/15215 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35511 event pairs, 577 based on Foata normal form. 8/5061 useless extension candidates. Maximal degree in co-relation 16126. Up to 2459 conditions per place. [2024-02-07 14:25:01,365 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 192 selfloop transitions, 38 changer transitions 0/244 dead transitions. [2024-02-07 14:25:01,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 244 transitions, 1948 flow [2024-02-07 14:25:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-07 14:25:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-07 14:25:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 368 transitions. [2024-02-07 14:25:01,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456575682382134 [2024-02-07 14:25:01,367 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 940 flow. Second operand 13 states and 368 transitions. [2024-02-07 14:25:01,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 244 transitions, 1948 flow [2024-02-07 14:25:01,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 244 transitions, 1875 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:01,390 INFO L231 Difference]: Finished difference. Result has 134 places, 124 transitions, 1029 flow [2024-02-07 14:25:01,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1029, PETRI_PLACES=134, PETRI_TRANSITIONS=124} [2024-02-07 14:25:01,390 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 66 predicate places. [2024-02-07 14:25:01,390 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 124 transitions, 1029 flow [2024-02-07 14:25:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:01,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:01,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-07 14:25:01,391 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:01,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash -676392823, now seen corresponding path program 5 times [2024-02-07 14:25:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:01,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982652617] [2024-02-07 14:25:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:01,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982652617] [2024-02-07 14:25:01,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982652617] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:01,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125465299] [2024-02-07 14:25:01,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:01,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:01,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:01,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:01,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:01,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 124 transitions, 1029 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:01,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:01,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:01,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:01,967 INFO L124 PetriNetUnfolderBase]: 3175/5946 cut-off events. [2024-02-07 14:25:01,968 INFO L125 PetriNetUnfolderBase]: For 20818/20818 co-relation queries the response was YES. [2024-02-07 14:25:01,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18540 conditions, 5946 events. 3175/5946 cut-off events. For 20818/20818 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 42749 event pairs, 938 based on Foata normal form. 8/5804 useless extension candidates. Maximal degree in co-relation 18508. Up to 2403 conditions per place. [2024-02-07 14:25:02,001 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 145 selfloop transitions, 42 changer transitions 0/201 dead transitions. [2024-02-07 14:25:02,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 201 transitions, 1775 flow [2024-02-07 14:25:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 14:25:02,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48847926267281105 [2024-02-07 14:25:02,003 INFO L175 Difference]: Start difference. First operand has 134 places, 124 transitions, 1029 flow. Second operand 7 states and 212 transitions. [2024-02-07 14:25:02,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 201 transitions, 1775 flow [2024-02-07 14:25:02,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 201 transitions, 1672 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-02-07 14:25:02,037 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 1059 flow [2024-02-07 14:25:02,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1059, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-02-07 14:25:02,038 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 68 predicate places. [2024-02-07 14:25:02,038 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 1059 flow [2024-02-07 14:25:02,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:02,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:02,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:02,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-07 14:25:02,039 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:02,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:02,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1758261539, now seen corresponding path program 6 times [2024-02-07 14:25:02,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:02,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740212441] [2024-02-07 14:25:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:02,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:02,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:02,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740212441] [2024-02-07 14:25:02,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740212441] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:02,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:02,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:02,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221668830] [2024-02-07 14:25:02,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:02,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:02,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:02,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:02,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:02,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 1059 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:02,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:02,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:02,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:02,679 INFO L124 PetriNetUnfolderBase]: 3652/6957 cut-off events. [2024-02-07 14:25:02,679 INFO L125 PetriNetUnfolderBase]: For 25352/25352 co-relation queries the response was YES. [2024-02-07 14:25:02,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21334 conditions, 6957 events. 3652/6957 cut-off events. For 25352/25352 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52363 event pairs, 1082 based on Foata normal form. 8/6773 useless extension candidates. Maximal degree in co-relation 21299. Up to 2460 conditions per place. [2024-02-07 14:25:02,723 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 144 selfloop transitions, 41 changer transitions 0/199 dead transitions. [2024-02-07 14:25:02,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 199 transitions, 1776 flow [2024-02-07 14:25:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 14:25:02,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48847926267281105 [2024-02-07 14:25:02,725 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 1059 flow. Second operand 7 states and 212 transitions. [2024-02-07 14:25:02,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 199 transitions, 1776 flow [2024-02-07 14:25:02,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 1705 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:02,764 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 1141 flow [2024-02-07 14:25:02,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1141, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2024-02-07 14:25:02,765 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 75 predicate places. [2024-02-07 14:25:02,765 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 1141 flow [2024-02-07 14:25:02,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:02,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:02,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:02,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-07 14:25:02,766 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:02,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1606559873, now seen corresponding path program 7 times [2024-02-07 14:25:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:02,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68514320] [2024-02-07 14:25:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:02,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:02,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:02,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:02,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68514320] [2024-02-07 14:25:02,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68514320] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:02,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:02,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849961086] [2024-02-07 14:25:02,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:02,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:02,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:02,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:02,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:02,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 1141 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:02,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:02,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:02,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:03,431 INFO L124 PetriNetUnfolderBase]: 3640/6953 cut-off events. [2024-02-07 14:25:03,432 INFO L125 PetriNetUnfolderBase]: For 27622/27622 co-relation queries the response was YES. [2024-02-07 14:25:03,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21719 conditions, 6953 events. 3640/6953 cut-off events. For 27622/27622 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 52565 event pairs, 1046 based on Foata normal form. 8/6763 useless extension candidates. Maximal degree in co-relation 21681. Up to 2460 conditions per place. [2024-02-07 14:25:03,475 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 157 selfloop transitions, 39 changer transitions 0/210 dead transitions. [2024-02-07 14:25:03,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 210 transitions, 1920 flow [2024-02-07 14:25:03,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:03,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-02-07 14:25:03,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 14:25:03,477 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 1141 flow. Second operand 7 states and 217 transitions. [2024-02-07 14:25:03,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 210 transitions, 1920 flow [2024-02-07 14:25:03,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 210 transitions, 1809 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:03,535 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 1159 flow [2024-02-07 14:25:03,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1159, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2024-02-07 14:25:03,537 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 80 predicate places. [2024-02-07 14:25:03,537 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 1159 flow [2024-02-07 14:25:03,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:03,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:03,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:03,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-07 14:25:03,539 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:03,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash -806959853, now seen corresponding path program 8 times [2024-02-07 14:25:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181635181] [2024-02-07 14:25:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:03,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:03,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181635181] [2024-02-07 14:25:03,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181635181] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:03,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:03,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:03,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027087441] [2024-02-07 14:25:03,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:03,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:03,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:03,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:03,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:03,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:03,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:04,609 INFO L124 PetriNetUnfolderBase]: 4470/8601 cut-off events. [2024-02-07 14:25:04,609 INFO L125 PetriNetUnfolderBase]: For 27761/27761 co-relation queries the response was YES. [2024-02-07 14:25:04,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25981 conditions, 8601 events. 4470/8601 cut-off events. For 27761/27761 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 68012 event pairs, 1280 based on Foata normal form. 16/8385 useless extension candidates. Maximal degree in co-relation 25941. Up to 4451 conditions per place. [2024-02-07 14:25:04,649 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 190 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2024-02-07 14:25:04,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 253 transitions, 2295 flow [2024-02-07 14:25:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:25:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:25:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 336 transitions. [2024-02-07 14:25:04,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-02-07 14:25:04,651 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 1159 flow. Second operand 12 states and 336 transitions. [2024-02-07 14:25:04,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 253 transitions, 2295 flow [2024-02-07 14:25:04,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 253 transitions, 2201 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:04,696 INFO L231 Difference]: Finished difference. Result has 160 places, 144 transitions, 1392 flow [2024-02-07 14:25:04,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1392, PETRI_PLACES=160, PETRI_TRANSITIONS=144} [2024-02-07 14:25:04,697 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 92 predicate places. [2024-02-07 14:25:04,697 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 144 transitions, 1392 flow [2024-02-07 14:25:04,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:04,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:04,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:04,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-07 14:25:04,698 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:04,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash 760829165, now seen corresponding path program 9 times [2024-02-07 14:25:04,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:04,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508637149] [2024-02-07 14:25:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:04,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:04,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:04,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508637149] [2024-02-07 14:25:04,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508637149] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:04,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:04,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:04,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405328575] [2024-02-07 14:25:04,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:04,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:04,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:04,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:04,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:04,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:04,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 144 transitions, 1392 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:04,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:04,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:04,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:05,540 INFO L124 PetriNetUnfolderBase]: 4678/8969 cut-off events. [2024-02-07 14:25:05,540 INFO L125 PetriNetUnfolderBase]: For 32926/32926 co-relation queries the response was YES. [2024-02-07 14:25:05,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27697 conditions, 8969 events. 4678/8969 cut-off events. For 32926/32926 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 71123 event pairs, 1567 based on Foata normal form. 8/8718 useless extension candidates. Maximal degree in co-relation 27652. Up to 6060 conditions per place. [2024-02-07 14:25:05,604 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 146 selfloop transitions, 53 changer transitions 0/213 dead transitions. [2024-02-07 14:25:05,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 213 transitions, 2165 flow [2024-02-07 14:25:05,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:25:05,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:25:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-02-07 14:25:05,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-07 14:25:05,605 INFO L175 Difference]: Start difference. First operand has 160 places, 144 transitions, 1392 flow. Second operand 9 states and 248 transitions. [2024-02-07 14:25:05,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 213 transitions, 2165 flow [2024-02-07 14:25:05,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 213 transitions, 2059 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:05,679 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1485 flow [2024-02-07 14:25:05,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-02-07 14:25:05,683 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 101 predicate places. [2024-02-07 14:25:05,684 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1485 flow [2024-02-07 14:25:05,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:05,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:05,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:05,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-07 14:25:05,684 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:05,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1063082885, now seen corresponding path program 10 times [2024-02-07 14:25:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662700142] [2024-02-07 14:25:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662700142] [2024-02-07 14:25:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662700142] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:05,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:05,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:05,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665537188] [2024-02-07 14:25:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:05,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:05,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:05,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:05,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1485 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:05,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:05,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:05,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:06,728 INFO L124 PetriNetUnfolderBase]: 5608/10953 cut-off events. [2024-02-07 14:25:06,728 INFO L125 PetriNetUnfolderBase]: For 39638/39638 co-relation queries the response was YES. [2024-02-07 14:25:06,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32576 conditions, 10953 events. 5608/10953 cut-off events. For 39638/39638 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 91637 event pairs, 1111 based on Foata normal form. 16/10628 useless extension candidates. Maximal degree in co-relation 32528. Up to 2479 conditions per place. [2024-02-07 14:25:06,819 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 170 selfloop transitions, 75 changer transitions 0/259 dead transitions. [2024-02-07 14:25:06,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 259 transitions, 2548 flow [2024-02-07 14:25:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:25:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:25:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-02-07 14:25:06,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790322580645161 [2024-02-07 14:25:06,820 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1485 flow. Second operand 10 states and 297 transitions. [2024-02-07 14:25:06,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 259 transitions, 2548 flow [2024-02-07 14:25:06,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 259 transitions, 2282 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-02-07 14:25:06,903 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 1544 flow [2024-02-07 14:25:06,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1544, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2024-02-07 14:25:06,904 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 107 predicate places. [2024-02-07 14:25:06,904 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 1544 flow [2024-02-07 14:25:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:06,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:06,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:06,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-07 14:25:06,905 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:06,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1761905087, now seen corresponding path program 11 times [2024-02-07 14:25:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:06,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965191229] [2024-02-07 14:25:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:06,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965191229] [2024-02-07 14:25:06,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965191229] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:06,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:06,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:25:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790140437] [2024-02-07 14:25:06,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:07,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:07,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:07,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:07,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 1544 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:07,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:07,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:08,112 INFO L124 PetriNetUnfolderBase]: 5584/10945 cut-off events. [2024-02-07 14:25:08,113 INFO L125 PetriNetUnfolderBase]: For 35056/35056 co-relation queries the response was YES. [2024-02-07 14:25:08,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32525 conditions, 10945 events. 5584/10945 cut-off events. For 35056/35056 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 91785 event pairs, 1063 based on Foata normal form. 16/10620 useless extension candidates. Maximal degree in co-relation 32475. Up to 2145 conditions per place. [2024-02-07 14:25:08,194 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 176 selfloop transitions, 75 changer transitions 0/265 dead transitions. [2024-02-07 14:25:08,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 265 transitions, 2600 flow [2024-02-07 14:25:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:25:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:25:08,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2024-02-07 14:25:08,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854838709677419 [2024-02-07 14:25:08,196 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 1544 flow. Second operand 10 states and 301 transitions. [2024-02-07 14:25:08,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 265 transitions, 2600 flow [2024-02-07 14:25:08,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 265 transitions, 2442 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-02-07 14:25:08,316 INFO L231 Difference]: Finished difference. Result has 182 places, 155 transitions, 1636 flow [2024-02-07 14:25:08,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1636, PETRI_PLACES=182, PETRI_TRANSITIONS=155} [2024-02-07 14:25:08,326 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 114 predicate places. [2024-02-07 14:25:08,326 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 155 transitions, 1636 flow [2024-02-07 14:25:08,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:08,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:08,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-07 14:25:08,334 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:08,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1606082595, now seen corresponding path program 12 times [2024-02-07 14:25:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603676496] [2024-02-07 14:25:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:08,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:08,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603676496] [2024-02-07 14:25:08,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603676496] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:08,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:08,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:08,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317217023] [2024-02-07 14:25:08,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:08,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:08,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:08,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:08,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:08,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:08,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 155 transitions, 1636 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:08,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:08,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:08,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:09,556 INFO L124 PetriNetUnfolderBase]: 5572/10891 cut-off events. [2024-02-07 14:25:09,557 INFO L125 PetriNetUnfolderBase]: For 33397/33397 co-relation queries the response was YES. [2024-02-07 14:25:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32257 conditions, 10891 events. 5572/10891 cut-off events. For 33397/33397 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 91308 event pairs, 1779 based on Foata normal form. 8/10552 useless extension candidates. Maximal degree in co-relation 32205. Up to 2996 conditions per place. [2024-02-07 14:25:09,637 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 175 selfloop transitions, 49 changer transitions 0/238 dead transitions. [2024-02-07 14:25:09,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 238 transitions, 2448 flow [2024-02-07 14:25:09,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:25:09,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:25:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-07 14:25:09,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-02-07 14:25:09,638 INFO L175 Difference]: Start difference. First operand has 182 places, 155 transitions, 1636 flow. Second operand 7 states and 218 transitions. [2024-02-07 14:25:09,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 238 transitions, 2448 flow [2024-02-07 14:25:09,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 238 transitions, 2286 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-02-07 14:25:09,764 INFO L231 Difference]: Finished difference. Result has 183 places, 155 transitions, 1589 flow [2024-02-07 14:25:09,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1589, PETRI_PLACES=183, PETRI_TRANSITIONS=155} [2024-02-07 14:25:09,764 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 115 predicate places. [2024-02-07 14:25:09,764 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 155 transitions, 1589 flow [2024-02-07 14:25:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:09,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:09,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:09,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-07 14:25:09,765 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:09,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1035753145, now seen corresponding path program 13 times [2024-02-07 14:25:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:09,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409754541] [2024-02-07 14:25:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409754541] [2024-02-07 14:25:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409754541] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:09,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:09,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:09,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284325773] [2024-02-07 14:25:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:09,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:09,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:09,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:09,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:09,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:09,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 155 transitions, 1589 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:09,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:09,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:09,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:11,098 INFO L124 PetriNetUnfolderBase]: 5917/11584 cut-off events. [2024-02-07 14:25:11,099 INFO L125 PetriNetUnfolderBase]: For 29428/29428 co-relation queries the response was YES. [2024-02-07 14:25:11,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33372 conditions, 11584 events. 5917/11584 cut-off events. For 29428/29428 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 98049 event pairs, 2091 based on Foata normal form. 8/11248 useless extension candidates. Maximal degree in co-relation 33320. Up to 7107 conditions per place. [2024-02-07 14:25:11,181 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 194 selfloop transitions, 57 changer transitions 0/265 dead transitions. [2024-02-07 14:25:11,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 265 transitions, 2584 flow [2024-02-07 14:25:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:25:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:25:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 333 transitions. [2024-02-07 14:25:11,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-02-07 14:25:11,183 INFO L175 Difference]: Start difference. First operand has 183 places, 155 transitions, 1589 flow. Second operand 12 states and 333 transitions. [2024-02-07 14:25:11,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 265 transitions, 2584 flow [2024-02-07 14:25:11,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 265 transitions, 2459 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-02-07 14:25:11,284 INFO L231 Difference]: Finished difference. Result has 189 places, 160 transitions, 1651 flow [2024-02-07 14:25:11,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1651, PETRI_PLACES=189, PETRI_TRANSITIONS=160} [2024-02-07 14:25:11,285 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 121 predicate places. [2024-02-07 14:25:11,285 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 160 transitions, 1651 flow [2024-02-07 14:25:11,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:11,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:11,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-07 14:25:11,286 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:11,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1308272175, now seen corresponding path program 14 times [2024-02-07 14:25:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619684966] [2024-02-07 14:25:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:11,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:11,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619684966] [2024-02-07 14:25:11,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619684966] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:11,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937077431] [2024-02-07 14:25:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:11,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:11,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:11,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:11,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 160 transitions, 1651 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:11,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:11,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:12,474 INFO L124 PetriNetUnfolderBase]: 5905/11548 cut-off events. [2024-02-07 14:25:12,475 INFO L125 PetriNetUnfolderBase]: For 28956/28956 co-relation queries the response was YES. [2024-02-07 14:25:12,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33549 conditions, 11548 events. 5905/11548 cut-off events. For 28956/28956 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 97631 event pairs, 2059 based on Foata normal form. 8/11212 useless extension candidates. Maximal degree in co-relation 33499. Up to 7087 conditions per place. [2024-02-07 14:25:12,557 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 209 selfloop transitions, 57 changer transitions 0/280 dead transitions. [2024-02-07 14:25:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 280 transitions, 2726 flow [2024-02-07 14:25:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:25:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:25:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 340 transitions. [2024-02-07 14:25:12,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2024-02-07 14:25:12,559 INFO L175 Difference]: Start difference. First operand has 189 places, 160 transitions, 1651 flow. Second operand 12 states and 340 transitions. [2024-02-07 14:25:12,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 280 transitions, 2726 flow [2024-02-07 14:25:12,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 280 transitions, 2666 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:12,639 INFO L231 Difference]: Finished difference. Result has 201 places, 164 transitions, 1793 flow [2024-02-07 14:25:12,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1793, PETRI_PLACES=201, PETRI_TRANSITIONS=164} [2024-02-07 14:25:12,640 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 133 predicate places. [2024-02-07 14:25:12,640 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 164 transitions, 1793 flow [2024-02-07 14:25:12,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:12,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:12,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:12,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-07 14:25:12,641 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:12,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1350786337, now seen corresponding path program 15 times [2024-02-07 14:25:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245967613] [2024-02-07 14:25:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:12,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:12,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245967613] [2024-02-07 14:25:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245967613] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:12,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:12,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:12,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816537142] [2024-02-07 14:25:12,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:12,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:12,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:12,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:12,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-02-07 14:25:12,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 164 transitions, 1793 flow. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:12,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:12,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-02-07 14:25:12,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:13,830 INFO L124 PetriNetUnfolderBase]: 6113/11958 cut-off events. [2024-02-07 14:25:13,830 INFO L125 PetriNetUnfolderBase]: For 33343/33343 co-relation queries the response was YES. [2024-02-07 14:25:13,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35171 conditions, 11958 events. 6113/11958 cut-off events. For 33343/33343 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 101778 event pairs, 1966 based on Foata normal form. 8/11606 useless extension candidates. Maximal degree in co-relation 35116. Up to 6854 conditions per place. [2024-02-07 14:25:13,931 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 212 selfloop transitions, 59 changer transitions 0/285 dead transitions. [2024-02-07 14:25:13,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 285 transitions, 2869 flow [2024-02-07 14:25:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:25:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:25:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 342 transitions. [2024-02-07 14:25:13,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596774193548387 [2024-02-07 14:25:13,933 INFO L175 Difference]: Start difference. First operand has 201 places, 164 transitions, 1793 flow. Second operand 12 states and 342 transitions. [2024-02-07 14:25:13,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 285 transitions, 2869 flow [2024-02-07 14:25:14,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 285 transitions, 2737 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:14,031 INFO L231 Difference]: Finished difference. Result has 211 places, 168 transitions, 1850 flow [2024-02-07 14:25:14,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1850, PETRI_PLACES=211, PETRI_TRANSITIONS=168} [2024-02-07 14:25:14,031 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 143 predicate places. [2024-02-07 14:25:14,031 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 168 transitions, 1850 flow [2024-02-07 14:25:14,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:14,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:14,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:14,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-07 14:25:14,032 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:14,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1062949605, now seen corresponding path program 16 times [2024-02-07 14:25:14,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:14,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904522989] [2024-02-07 14:25:14,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:14,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:25:14,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:25:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:25:14,068 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:25:14,069 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:25:14,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 41 remaining) [2024-02-07 14:25:14,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 41 remaining) [2024-02-07 14:25:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 41 remaining) [2024-02-07 14:25:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 41 remaining) [2024-02-07 14:25:14,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 41 remaining) [2024-02-07 14:25:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 41 remaining) [2024-02-07 14:25:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 41 remaining) [2024-02-07 14:25:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 41 remaining) [2024-02-07 14:25:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 41 remaining) [2024-02-07 14:25:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 41 remaining) [2024-02-07 14:25:14,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 41 remaining) [2024-02-07 14:25:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 41 remaining) [2024-02-07 14:25:14,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 41 remaining) [2024-02-07 14:25:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 41 remaining) [2024-02-07 14:25:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 41 remaining) [2024-02-07 14:25:14,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (18 of 41 remaining) [2024-02-07 14:25:14,079 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 41 remaining) [2024-02-07 14:25:14,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 41 remaining) [2024-02-07 14:25:14,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 41 remaining) [2024-02-07 14:25:14,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 41 remaining) [2024-02-07 14:25:14,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-07 14:25:14,082 INFO L445 BasicCegarLoop]: Path program histogram: [16, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:14,087 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:25:14,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:25:14,121 INFO L503 ceAbstractionStarter]: Automizer considered 22 witness invariants [2024-02-07 14:25:14,122 INFO L504 ceAbstractionStarter]: WitnessConsidered=22 [2024-02-07 14:25:14,123 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:25:14 BasicIcfg [2024-02-07 14:25:14,123 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:25:14,123 INFO L158 Benchmark]: Toolchain (without parser) took 29024.79ms. Allocated memory was 169.9MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 134.5MB in the beginning and 3.0GB in the end (delta: -2.8GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-02-07 14:25:14,124 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:14,124 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:14,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.16ms. Allocated memory is still 169.9MB. Free memory was 134.5MB in the beginning and 103.0MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-02-07 14:25:14,124 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.93ms. Allocated memory is still 169.9MB. Free memory was 103.0MB in the beginning and 100.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:25:14,124 INFO L158 Benchmark]: Boogie Preprocessor took 58.95ms. Allocated memory is still 169.9MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:25:14,125 INFO L158 Benchmark]: RCFGBuilder took 472.97ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 120.1MB in the end (delta: -21.4MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2024-02-07 14:25:14,125 INFO L158 Benchmark]: TraceAbstraction took 27883.43ms. Allocated memory was 169.9MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 120.1MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-02-07 14:25:14,126 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 91.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 169.9MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.16ms. Allocated memory is still 169.9MB. Free memory was 134.5MB in the beginning and 103.0MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.93ms. Allocated memory is still 169.9MB. Free memory was 103.0MB in the beginning and 100.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.95ms. Allocated memory is still 169.9MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 472.97ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 120.1MB in the end (delta: -21.4MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * TraceAbstraction took 27883.43ms. Allocated memory was 169.9MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 120.1MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 793]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L780] 0 pthread_t t2339; [L781] FCALL, FORK 0 pthread_create(&t2339, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2339={5:0}, x=0, y=0] [L782] 0 pthread_t t2340; [L783] FCALL, FORK 0 pthread_create(&t2340, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2339={5:0}, t2340={6:0}, x=0, y=0] [L742] 2 y = 2 [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L784] 0 pthread_t t2341; [L785] FCALL, FORK 0 pthread_create(&t2341, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2339={5:0}, t2340={6:0}, t2341={3:0}, x=0, y=2] [L725] 1 y = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L730] 1 __unbuffered_p0_EAX = y [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L735] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L735] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L736] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L757] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] [L757] 3 __unbuffered_p2_EAX = x [L758] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L760] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L760] 3 __unbuffered_p2_EBX = y [L761] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EBX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L765] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L765] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L766] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L745] 2 x = 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L750] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L750] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L787] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L787] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L788] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2339={5:0}, t2340={6:0}, t2341={3:0}, x=1, y=1] [L789] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] [L789] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L789] RET 0 assume_abort_if_not(main$tmp_guard0) [L793] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EBX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[2]]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2339={5:0}, t2340={6:0}, t2341={3:0}, x=1, y=1] - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 789]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 794]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 783]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 785]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 781]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 102 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.8s, OverallIterations: 35, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1873 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1871 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5914 IncrementalHoareTripleChecker+Invalid, 5958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 0 mSDtfsCounter, 5914 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1850occurred in iteration=34, InterpolantAutomatonStates: 231, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 5093 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 14:25:14,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE