./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-958ec4d-m [2024-02-07 14:24:25,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:26,038 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:26,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:26,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:26,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:26,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:26,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:26,073 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:26,076 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:26,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:26,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:26,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:26,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:26,078 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:26,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:26,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:26,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:26,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:26,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:26,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:26,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:26,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:26,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:26,080 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:26,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:26,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:26,081 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:26,081 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:26,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:26,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:26,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:26,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:26,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:26,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:26,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:26,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:26,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:26,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:26,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:26,084 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:26,084 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:26,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:26,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:26,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:26,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:26,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:26,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:26,323 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:26,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:27,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:27,558 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:27,558 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:27,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0513dbf5/fb9ff33b0c134acaab5069c86a1a8263/FLAG25913ac6d [2024-02-07 14:24:27,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0513dbf5/fb9ff33b0c134acaab5069c86a1a8263 [2024-02-07 14:24:27,587 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:27,587 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:27,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 14:24:27,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:27,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:27,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:27,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:27,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:27,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:27" (1/2) ... [2024-02-07 14:24:27,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b5fea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:27, skipping insertion in model container [2024-02-07 14:24:27,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:27" (1/2) ... [2024-02-07 14:24:27,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a645db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:27, skipping insertion in model container [2024-02-07 14:24:27,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:27" (2/2) ... [2024-02-07 14:24:27,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b5fea1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:27, skipping insertion in model container [2024-02-07 14:24:27,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:27" (2/2) ... [2024-02-07 14:24:27,665 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:27,723 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:27,725 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] y == 1 [2024-02-07 14:24:27,725 INFO L76 edCorrectnessWitness]: Location invariant before [L752-L752] (((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:24:27,725 INFO L76 edCorrectnessWitness]: Location invariant before [L795-L795] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,725 INFO L76 edCorrectnessWitness]: Location invariant before [L725-L725] (((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 14:24:27,725 INFO L76 edCorrectnessWitness]: Location invariant before [L803-L803] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:27,726 INFO L76 edCorrectnessWitness]: Location invariant before [L797-L797] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:27,726 INFO L76 edCorrectnessWitness]: Location invariant before [L796-L796] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:27,726 INFO L76 edCorrectnessWitness]: Location invariant before [L772-L772] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,726 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,726 INFO L76 edCorrectnessWitness]: Location invariant before [L740-L740] x == 2 [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L801-L801] (((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && (x == 2)) && ((y == 2 && (__unbuffered_p0_EAX == 2 || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) || ((((((0 <= __unbuffered_p0_EAX && 0 <= y) && __unbuffered_p0_EAX <= 2) && y <= 2) && y <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L732-L732] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L802-L802] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:27,727 INFO L76 edCorrectnessWitness]: Location invariant before [L759-L759] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,728 INFO L76 edCorrectnessWitness]: Location invariant before [L745-L745] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,728 INFO L76 edCorrectnessWitness]: Location invariant before [L771-L771] 0 <= __unbuffered_cnt [2024-02-07 14:24:27,728 INFO L76 edCorrectnessWitness]: Location invariant before [L767-L767] y == 2 [2024-02-07 14:24:27,728 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,728 INFO L76 edCorrectnessWitness]: Location invariant before [L728-L728] x == 1 [2024-02-07 14:24:27,729 INFO L76 edCorrectnessWitness]: Location invariant before [L760-L760] 1 <= __unbuffered_cnt [2024-02-07 14:24:27,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:27,897 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-02-07 14:24:28,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:28,064 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:28,094 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] 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 Start Parsing Local [2024-02-07 14:24:28,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:28,155 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:28,155 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:28 WrapperNode [2024-02-07 14:24:28,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:28,156 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:28,156 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:28,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:28,162 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,171 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,187 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2024-02-07 14:24:28,188 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:28,188 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:28,188 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:28,188 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:28,203 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,203 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,206 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,218 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-07 14:24:28,218 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,218 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,223 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,225 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,226 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,227 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,229 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:28,230 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:28,230 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:28,230 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:28,231 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 02:24:28" (1/1) ... [2024-02-07 14:24:28,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:28,257 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 14:24:28,276 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 14:24:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:24:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:24:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:24:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:24:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-02-07 14:24:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:28,296 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 14:24:28,415 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:28,417 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:28,651 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:28,651 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:28,755 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:28,755 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:28,755 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:28 BoogieIcfgContainer [2024-02-07 14:24:28,755 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:28,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:28,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:28,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:28,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:27" (1/4) ... [2024-02-07 14:24:28,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67234e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:28, skipping insertion in model container [2024-02-07 14:24:28,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:27" (2/4) ... [2024-02-07 14:24:28,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67234e6a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:28, skipping insertion in model container [2024-02-07 14:24:28,771 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 02:24:28" (3/4) ... [2024-02-07 14:24:28,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67234e6a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:28, skipping insertion in model container [2024-02-07 14:24:28,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:28" (4/4) ... [2024-02-07 14:24:28,772 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:28,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:28,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-02-07 14:24:28,784 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:28,824 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:28,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 69 transitions, 154 flow [2024-02-07 14:24:28,885 INFO L124 PetriNetUnfolderBase]: 1/65 cut-off events. [2024-02-07 14:24:28,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:28,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 65 events. 1/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 208 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-02-07 14:24:28,889 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 69 transitions, 154 flow [2024-02-07 14:24:28,891 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 65 transitions, 142 flow [2024-02-07 14:24:28,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:28,910 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;@663018c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:28,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-02-07 14:24:28,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:28,913 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:28,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:28,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:28,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:28,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,924 INFO L85 PathProgramCache]: Analyzing trace with hash 10422547, now seen corresponding path program 1 times [2024-02-07 14:24:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337390422] [2024-02-07 14:24:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:29,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337390422] [2024-02-07 14:24:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337390422] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555179825] [2024-02-07 14:24:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:29,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:29,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 142 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 14:24:29,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:29,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:32,671 INFO L124 PetriNetUnfolderBase]: 36074/50405 cut-off events. [2024-02-07 14:24:32,672 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-02-07 14:24:32,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98442 conditions, 50405 events. 36074/50405 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 353321 event pairs, 7366 based on Foata normal form. 1180/38014 useless extension candidates. Maximal degree in co-relation 98430. Up to 44139 conditions per place. [2024-02-07 14:24:33,098 INFO L140 encePairwiseOnDemand]: 52/69 looper letters, 56 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-02-07 14:24:33,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 283 flow [2024-02-07 14:24:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-02-07 14:24:33,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2024-02-07 14:24:33,111 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 142 flow. Second operand 3 states and 144 transitions. [2024-02-07 14:24:33,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 283 flow [2024-02-07 14:24:33,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:33,126 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 131 flow [2024-02-07 14:24:33,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-02-07 14:24:33,131 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -13 predicate places. [2024-02-07 14:24:33,131 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 131 flow [2024-02-07 14:24:33,132 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 14:24:33,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:33,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:33,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:33,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:33,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1260860523, now seen corresponding path program 1 times [2024-02-07 14:24:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:33,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472539066] [2024-02-07 14:24:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:33,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:33,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472539066] [2024-02-07 14:24:33,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472539066] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:33,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:33,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:33,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495536644] [2024-02-07 14:24:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:33,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:33,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:33,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:33,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:33,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:33,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 131 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 14:24:33,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:33,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:33,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:35,698 INFO L124 PetriNetUnfolderBase]: 30046/40452 cut-off events. [2024-02-07 14:24:35,698 INFO L125 PetriNetUnfolderBase]: For 4180/4198 co-relation queries the response was YES. [2024-02-07 14:24:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85904 conditions, 40452 events. 30046/40452 cut-off events. For 4180/4198 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 248493 event pairs, 10058 based on Foata normal form. 0/31351 useless extension candidates. Maximal degree in co-relation 85893. Up to 38190 conditions per place. [2024-02-07 14:24:35,913 INFO L140 encePairwiseOnDemand]: 59/69 looper letters, 60 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-02-07 14:24:35,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 81 transitions, 333 flow [2024-02-07 14:24:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-02-07 14:24:35,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-02-07 14:24:35,920 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 131 flow. Second operand 3 states and 126 transitions. [2024-02-07 14:24:35,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 81 transitions, 333 flow [2024-02-07 14:24:35,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:35,924 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 169 flow [2024-02-07 14:24:35,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-02-07 14:24:35,925 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-02-07 14:24:35,926 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 169 flow [2024-02-07 14:24:35,926 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 14:24:35,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:35,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:35,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:35,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:35,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash -818027360, now seen corresponding path program 1 times [2024-02-07 14:24:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:35,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142818220] [2024-02-07 14:24:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:36,017 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 14:24:36,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:36,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142818220] [2024-02-07 14:24:36,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142818220] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:36,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:36,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:36,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709391122] [2024-02-07 14:24:36,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:36,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:36,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:36,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:36,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:36,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:36,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:38,285 INFO L124 PetriNetUnfolderBase]: 28955/44545 cut-off events. [2024-02-07 14:24:38,285 INFO L125 PetriNetUnfolderBase]: For 8483/8490 co-relation queries the response was YES. [2024-02-07 14:24:38,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101006 conditions, 44545 events. 28955/44545 cut-off events. For 8483/8490 co-relation queries the response was YES. Maximal size of possible extension queue 1968. Compared 350365 event pairs, 13276 based on Foata normal form. 1/34904 useless extension candidates. Maximal degree in co-relation 100993. Up to 37211 conditions per place. [2024-02-07 14:24:38,535 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 67 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2024-02-07 14:24:38,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 397 flow [2024-02-07 14:24:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-02-07 14:24:38,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5893719806763285 [2024-02-07 14:24:38,538 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 169 flow. Second operand 3 states and 122 transitions. [2024-02-07 14:24:38,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 397 flow [2024-02-07 14:24:38,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:38,543 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 185 flow [2024-02-07 14:24:38,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-02-07 14:24:38,543 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-02-07 14:24:38,544 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 185 flow [2024-02-07 14:24:38,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:38,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:38,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:38,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:38,544 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:38,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:38,545 INFO L85 PathProgramCache]: Analyzing trace with hash -145274946, now seen corresponding path program 1 times [2024-02-07 14:24:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:38,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513458437] [2024-02-07 14:24:38,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:38,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:38,612 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 14:24:38,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:38,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513458437] [2024-02-07 14:24:38,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513458437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:38,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:38,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:38,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790703836] [2024-02-07 14:24:38,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:38,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:38,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:38,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:38,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:38,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 14:24:38,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:38,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:38,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:41,910 INFO L124 PetriNetUnfolderBase]: 40868/61583 cut-off events. [2024-02-07 14:24:41,910 INFO L125 PetriNetUnfolderBase]: For 17653/17692 co-relation queries the response was YES. [2024-02-07 14:24:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147978 conditions, 61583 events. 40868/61583 cut-off events. For 17653/17692 co-relation queries the response was YES. Maximal size of possible extension queue 2813. Compared 494627 event pairs, 18663 based on Foata normal form. 1114/51797 useless extension candidates. Maximal degree in co-relation 147963. Up to 31829 conditions per place. [2024-02-07 14:24:42,274 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 76 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2024-02-07 14:24:42,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 461 flow [2024-02-07 14:24:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2024-02-07 14:24:42,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6183574879227053 [2024-02-07 14:24:42,422 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 185 flow. Second operand 3 states and 128 transitions. [2024-02-07 14:24:42,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 461 flow [2024-02-07 14:24:42,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:42,427 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 212 flow [2024-02-07 14:24:42,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-02-07 14:24:42,428 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -6 predicate places. [2024-02-07 14:24:42,428 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 212 flow [2024-02-07 14:24:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 14:24:42,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:42,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:42,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:42,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:42,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash 812117060, now seen corresponding path program 1 times [2024-02-07 14:24:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:42,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839851167] [2024-02-07 14:24:42,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:42,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:42,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839851167] [2024-02-07 14:24:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839851167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:42,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:42,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:42,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102141267] [2024-02-07 14:24:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:42,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:42,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:42,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:42,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:42,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:42,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:24:42,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:42,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:42,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:45,335 INFO L124 PetriNetUnfolderBase]: 35643/53403 cut-off events. [2024-02-07 14:24:45,335 INFO L125 PetriNetUnfolderBase]: For 29982/30151 co-relation queries the response was YES. [2024-02-07 14:24:45,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132590 conditions, 53403 events. 35643/53403 cut-off events. For 29982/30151 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 419157 event pairs, 19940 based on Foata normal form. 1344/45126 useless extension candidates. Maximal degree in co-relation 132574. Up to 29035 conditions per place. [2024-02-07 14:24:45,635 INFO L140 encePairwiseOnDemand]: 65/69 looper letters, 74 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2024-02-07 14:24:45,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 93 transitions, 454 flow [2024-02-07 14:24:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-02-07 14:24:45,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-02-07 14:24:45,637 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 212 flow. Second operand 3 states and 126 transitions. [2024-02-07 14:24:45,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 93 transitions, 454 flow [2024-02-07 14:24:45,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 441 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:45,649 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 185 flow [2024-02-07 14:24:45,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-02-07 14:24:45,650 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-07 14:24:45,650 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 185 flow [2024-02-07 14:24:45,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:24:45,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:45,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:45,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:45,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:45,651 INFO L85 PathProgramCache]: Analyzing trace with hash -272035007, now seen corresponding path program 1 times [2024-02-07 14:24:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604760929] [2024-02-07 14:24:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:45,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604760929] [2024-02-07 14:24:45,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604760929] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:45,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:45,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:45,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339595273] [2024-02-07 14:24:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:45,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:45,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:45,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:45,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:24:45,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:45,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:45,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:49,949 INFO L124 PetriNetUnfolderBase]: 52988/79925 cut-off events. [2024-02-07 14:24:49,949 INFO L125 PetriNetUnfolderBase]: For 25236/25292 co-relation queries the response was YES. [2024-02-07 14:24:50,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193353 conditions, 79925 events. 52988/79925 cut-off events. For 25236/25292 co-relation queries the response was YES. Maximal size of possible extension queue 3850. Compared 677821 event pairs, 24054 based on Foata normal form. 788/65247 useless extension candidates. Maximal degree in co-relation 193338. Up to 40015 conditions per place. [2024-02-07 14:24:50,471 INFO L140 encePairwiseOnDemand]: 66/69 looper letters, 71 selfloop transitions, 3 changer transitions 0/90 dead transitions. [2024-02-07 14:24:50,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 90 transitions, 440 flow [2024-02-07 14:24:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-02-07 14:24:50,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5893719806763285 [2024-02-07 14:24:50,472 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 185 flow. Second operand 3 states and 122 transitions. [2024-02-07 14:24:50,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 90 transitions, 440 flow [2024-02-07 14:24:50,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 425 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:50,509 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 188 flow [2024-02-07 14:24:50,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-02-07 14:24:50,510 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2024-02-07 14:24:50,510 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 188 flow [2024-02-07 14:24:50,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:24:50,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:50,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:50,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:50,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:50,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:50,511 INFO L85 PathProgramCache]: Analyzing trace with hash -237196183, now seen corresponding path program 1 times [2024-02-07 14:24:50,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:50,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270160567] [2024-02-07 14:24:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:50,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:50,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270160567] [2024-02-07 14:24:50,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270160567] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:50,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:50,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:50,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680441400] [2024-02-07 14:24:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:50,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:50,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:50,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 69 [2024-02-07 14:24:50,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 14:24:50,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:50,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 69 [2024-02-07 14:24:50,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:55,205 INFO L124 PetriNetUnfolderBase]: 52988/82466 cut-off events. [2024-02-07 14:24:55,205 INFO L125 PetriNetUnfolderBase]: For 33462/33518 co-relation queries the response was YES. [2024-02-07 14:24:55,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198515 conditions, 82466 events. 52988/82466 cut-off events. For 33462/33518 co-relation queries the response was YES. Maximal size of possible extension queue 3835. Compared 729476 event pairs, 47476 based on Foata normal form. 0/65406 useless extension candidates. Maximal degree in co-relation 198500. Up to 71416 conditions per place. [2024-02-07 14:24:55,695 INFO L140 encePairwiseOnDemand]: 67/69 looper letters, 42 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-02-07 14:24:55,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 58 transitions, 272 flow [2024-02-07 14:24:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:55,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-02-07 14:24:55,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2024-02-07 14:24:55,696 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 188 flow. Second operand 3 states and 93 transitions. [2024-02-07 14:24:55,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 58 transitions, 272 flow [2024-02-07 14:24:55,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 58 transitions, 267 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:55,742 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 183 flow [2024-02-07 14:24:55,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-02-07 14:24:55,743 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2024-02-07 14:24:55,743 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 183 flow [2024-02-07 14:24:55,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 14:24:55,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:55,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:55,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:55,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:24:55,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:55,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1238646554, now seen corresponding path program 1 times [2024-02-07 14:24:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:55,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224782984] [2024-02-07 14:24:55,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:55,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:55,797 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 14:24:55,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:55,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224782984] [2024-02-07 14:24:55,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224782984] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:55,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:55,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287253459] [2024-02-07 14:24:55,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:55,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:55,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:55,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:24:55,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 14:24:55,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:55,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:24:55,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:59,667 INFO L124 PetriNetUnfolderBase]: 49089/72707 cut-off events. [2024-02-07 14:24:59,667 INFO L125 PetriNetUnfolderBase]: For 22488/22544 co-relation queries the response was YES. [2024-02-07 14:24:59,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176566 conditions, 72707 events. 49089/72707 cut-off events. For 22488/22544 co-relation queries the response was YES. Maximal size of possible extension queue 3436. Compared 587684 event pairs, 18079 based on Foata normal form. 855/59204 useless extension candidates. Maximal degree in co-relation 176554. Up to 34223 conditions per place. [2024-02-07 14:25:00,088 INFO L140 encePairwiseOnDemand]: 66/69 looper letters, 69 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2024-02-07 14:25:00,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 417 flow [2024-02-07 14:25:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-02-07 14:25:00,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2024-02-07 14:25:00,090 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 183 flow. Second operand 3 states and 120 transitions. [2024-02-07 14:25:00,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 417 flow [2024-02-07 14:25:00,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:00,097 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 179 flow [2024-02-07 14:25:00,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-02-07 14:25:00,097 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-07 14:25:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 179 flow [2024-02-07 14:25:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 14:25:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:25:00,098 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:25:00,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -752167658, now seen corresponding path program 1 times [2024-02-07 14:25:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354407932] [2024-02-07 14:25:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:00,128 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 14:25:00,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354407932] [2024-02-07 14:25:00,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354407932] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:00,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:00,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:00,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714718887] [2024-02-07 14:25:00,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:00,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:00,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:25:00,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:25:00,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:00,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:25:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:01,393 INFO L124 PetriNetUnfolderBase]: 18179/25178 cut-off events. [2024-02-07 14:25:01,394 INFO L125 PetriNetUnfolderBase]: For 11916/11938 co-relation queries the response was YES. [2024-02-07 14:25:01,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63399 conditions, 25178 events. 18179/25178 cut-off events. For 11916/11938 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 153297 event pairs, 6405 based on Foata normal form. 792/25832 useless extension candidates. Maximal degree in co-relation 63388. Up to 23790 conditions per place. [2024-02-07 14:25:01,533 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 54 selfloop transitions, 4 changer transitions 2/75 dead transitions. [2024-02-07 14:25:01,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 356 flow [2024-02-07 14:25:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-02-07 14:25:01,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-02-07 14:25:01,549 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 179 flow. Second operand 3 states and 117 transitions. [2024-02-07 14:25:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 356 flow [2024-02-07 14:25:01,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 75 transitions, 341 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:01,560 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 157 flow [2024-02-07 14:25:01,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-02-07 14:25:01,561 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -13 predicate places. [2024-02-07 14:25:01,561 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 157 flow [2024-02-07 14:25:01,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 14:25:01,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:01,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:01,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:25:01,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:25:01,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash -312253989, now seen corresponding path program 1 times [2024-02-07 14:25:01,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:01,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226900718] [2024-02-07 14:25:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:01,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226900718] [2024-02-07 14:25:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226900718] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:01,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722932054] [2024-02-07 14:25:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:01,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:01,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:01,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 69 [2024-02-07 14:25:01,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:01,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:01,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 69 [2024-02-07 14:25:01,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:02,901 INFO L124 PetriNetUnfolderBase]: 16974/28212 cut-off events. [2024-02-07 14:25:02,902 INFO L125 PetriNetUnfolderBase]: For 9874/9896 co-relation queries the response was YES. [2024-02-07 14:25:02,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63024 conditions, 28212 events. 16974/28212 cut-off events. For 9874/9896 co-relation queries the response was YES. Maximal size of possible extension queue 1318. Compared 233361 event pairs, 2632 based on Foata normal form. 841/27705 useless extension candidates. Maximal degree in co-relation 63014. Up to 14053 conditions per place. [2024-02-07 14:25:03,092 INFO L140 encePairwiseOnDemand]: 62/69 looper letters, 65 selfloop transitions, 6 changer transitions 1/87 dead transitions. [2024-02-07 14:25:03,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 419 flow [2024-02-07 14:25:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:03,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-02-07 14:25:03,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 14:25:03,093 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 157 flow. Second operand 4 states and 138 transitions. [2024-02-07 14:25:03,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 419 flow [2024-02-07 14:25:03,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 87 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:03,096 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 179 flow [2024-02-07 14:25:03,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2024-02-07 14:25:03,097 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -10 predicate places. [2024-02-07 14:25:03,097 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 179 flow [2024-02-07 14:25:03,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:03,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:03,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:03,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:25:03,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:25:03,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1030808388, now seen corresponding path program 1 times [2024-02-07 14:25:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894576780] [2024-02-07 14:25:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:03,189 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 14:25:03,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:03,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894576780] [2024-02-07 14:25:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894576780] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:03,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561496522] [2024-02-07 14:25:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:03,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:03,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:03,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:03,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:03,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:25:03,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:03,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:03,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:25:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:04,255 INFO L124 PetriNetUnfolderBase]: 15245/23117 cut-off events. [2024-02-07 14:25:04,255 INFO L125 PetriNetUnfolderBase]: For 11282/11287 co-relation queries the response was YES. [2024-02-07 14:25:04,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57560 conditions, 23117 events. 15245/23117 cut-off events. For 11282/11287 co-relation queries the response was YES. Maximal size of possible extension queue 1077. Compared 165352 event pairs, 3814 based on Foata normal form. 14/22827 useless extension candidates. Maximal degree in co-relation 57547. Up to 20334 conditions per place. [2024-02-07 14:25:04,434 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 66 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2024-02-07 14:25:04,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 473 flow [2024-02-07 14:25:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-02-07 14:25:04,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-02-07 14:25:04,435 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 179 flow. Second operand 4 states and 142 transitions. [2024-02-07 14:25:04,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 473 flow [2024-02-07 14:25:04,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 428 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:04,449 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 221 flow [2024-02-07 14:25:04,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-02-07 14:25:04,450 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-02-07 14:25:04,450 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 221 flow [2024-02-07 14:25:04,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:04,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:04,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:04,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:25:04,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:25:04,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash -367963712, now seen corresponding path program 1 times [2024-02-07 14:25:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:04,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806959126] [2024-02-07 14:25:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:04,524 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 14:25:04,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:04,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806959126] [2024-02-07 14:25:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806959126] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:04,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:25:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011727522] [2024-02-07 14:25:04,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:04,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:25:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:25:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:25:04,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 69 [2024-02-07 14:25:04,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 14:25:04,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:04,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 69 [2024-02-07 14:25:04,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:05,588 INFO L124 PetriNetUnfolderBase]: 13770/22755 cut-off events. [2024-02-07 14:25:05,589 INFO L125 PetriNetUnfolderBase]: For 11528/11549 co-relation queries the response was YES. [2024-02-07 14:25:05,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53927 conditions, 22755 events. 13770/22755 cut-off events. For 11528/11549 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 178915 event pairs, 1052 based on Foata normal form. 792/22570 useless extension candidates. Maximal degree in co-relation 53914. Up to 9893 conditions per place. [2024-02-07 14:25:05,744 INFO L140 encePairwiseOnDemand]: 62/69 looper letters, 105 selfloop transitions, 10 changer transitions 1/131 dead transitions. [2024-02-07 14:25:05,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 131 transitions, 764 flow [2024-02-07 14:25:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-02-07 14:25:05,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101449275362319 [2024-02-07 14:25:05,746 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 221 flow. Second operand 5 states and 176 transitions. [2024-02-07 14:25:05,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 131 transitions, 764 flow [2024-02-07 14:25:05,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 131 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:25:05,753 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 282 flow [2024-02-07 14:25:05,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-02-07 14:25:05,754 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-02-07 14:25:05,754 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 282 flow [2024-02-07 14:25:05,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 14:25:05,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:05,755 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 14:25:05,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:25:05,755 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 41 more)] === [2024-02-07 14:25:05,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1131061731, now seen corresponding path program 1 times [2024-02-07 14:25:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475678014] [2024-02-07 14:25:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:05,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:05,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475678014] [2024-02-07 14:25:05,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475678014] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:05,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:05,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:05,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347482796] [2024-02-07 14:25:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:05,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:25:05,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:05,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:25:05,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:25:05,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 69 [2024-02-07 14:25:05,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:05,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:05,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 69 [2024-02-07 14:25:05,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand