./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_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/safe014_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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe014_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 14:24:23,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:23,244 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:23,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:23,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:23,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:23,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:23,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:23,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:23,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:23,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:23,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:23,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:23,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:23,294 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:23,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:23,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:23,295 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:23,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:23,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:23,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:23,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:23,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:23,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:23,297 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:23,297 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:23,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:23,298 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:23,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:23,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:23,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:23,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:23,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:23,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:23,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:23,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:23,301 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:23,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:23,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:23,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:23,302 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:23,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:23,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:23,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:23,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:23,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:23,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:23,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:23,609 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:23,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:24,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:25,037 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:25,037 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:25,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8690d9e/e8a057e0009c4edc96d1ef020cb07d2e/FLAG6f61ad7ea [2024-02-07 14:24:25,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8690d9e/e8a057e0009c4edc96d1ef020cb07d2e [2024-02-07 14:24:25,065 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:25,065 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:25,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 14:24:25,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:25,202 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:25,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:25,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:25,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:25,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:25" (1/2) ... [2024-02-07 14:24:25,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67baa549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:25, skipping insertion in model container [2024-02-07 14:24:25,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:25" (1/2) ... [2024-02-07 14:24:25,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5dca7abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:25, skipping insertion in model container [2024-02-07 14:24:25,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:25" (2/2) ... [2024-02-07 14:24:25,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67baa549 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:25, skipping insertion in model container [2024-02-07 14:24:25,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:25" (2/2) ... [2024-02-07 14:24:25,213 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:25,300 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:25,302 INFO L76 edCorrectnessWitness]: Location invariant before [L786-L786] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:25,303 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:24:25,303 INFO L76 edCorrectnessWitness]: Location invariant before [L785-L785] 0 <= __unbuffered_cnt [2024-02-07 14:24:25,303 INFO L76 edCorrectnessWitness]: Location invariant before [L725-L725] ((0 <= y) && (y <= 1)) && (y == 0 || y == 1) [2024-02-07 14:24:25,303 INFO L76 edCorrectnessWitness]: Location invariant before [L763-L763] 0 <= __unbuffered_cnt [2024-02-07 14:24:25,304 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] 0 <= __unbuffered_cnt [2024-02-07 14:24:25,304 INFO L76 edCorrectnessWitness]: Location invariant before [L728-L728] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:24:25,304 INFO L76 edCorrectnessWitness]: Location invariant before [L791-L791] (((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && (x == 2)) && ((__unbuffered_p0_EAX == 1 && (__unbuffered_p0_EBX == 0 || (((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 2) && __unbuffered_p0_EBX <= 127) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)))) || ((((((0 <= __unbuffered_p0_EAX && 0 <= __unbuffered_p0_EBX) && __unbuffered_p0_EAX <= 1) && __unbuffered_p0_EBX <= 2) && __unbuffered_p0_EBX <= 127) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)))) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 14:24:25,305 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] x == 2 [2024-02-07 14:24:25,305 INFO L76 edCorrectnessWitness]: Location invariant before [L741-L741] x == 1 [2024-02-07 14:24:25,305 INFO L76 edCorrectnessWitness]: Location invariant before [L756-L756] (((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 14:24:25,305 INFO L76 edCorrectnessWitness]: Location invariant before [L759-L759] y == 1 [2024-02-07 14:24:25,305 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] 1 <= __unbuffered_cnt [2024-02-07 14:24:25,305 INFO L76 edCorrectnessWitness]: Location invariant before [L729-L729] (((0 <= __unbuffered_p0_EBX) && (__unbuffered_p0_EBX <= 2)) && (__unbuffered_p0_EBX <= 127)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2) [2024-02-07 14:24:25,306 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] 1 <= __unbuffered_cnt [2024-02-07 14:24:25,306 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] 0 <= __unbuffered_cnt [2024-02-07 14:24:25,306 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:25,306 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:25,306 INFO L76 edCorrectnessWitness]: Location invariant before [L749-L749] 1 <= __unbuffered_cnt [2024-02-07 14:24:25,306 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:25,307 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] ((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) [2024-02-07 14:24:25,307 INFO L76 edCorrectnessWitness]: Location invariant before [L792-L792] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:25,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:25,549 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-02-07 14:24:25,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:25,706 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:25,741 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/safe014_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 [2024-02-07 14:24:25,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:25,869 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:25,869 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:25 WrapperNode [2024-02-07 14:24:25,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:25,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:25,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:25,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:25,879 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 02:24:25" (1/1) ... [2024-02-07 14:24:25,910 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 02:24:25" (1/1) ... [2024-02-07 14:24:25,947 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-02-07 14:24:25,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:25,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:25,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:25,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:25,959 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 02:24:25" (1/1) ... [2024-02-07 14:24:25,960 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 02:24:25" (1/1) ... [2024-02-07 14:24:25,977 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 02:24:25" (1/1) ... [2024-02-07 14:24:25,997 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 14:24:25,999 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 02:24:25" (1/1) ... [2024-02-07 14:24:25,999 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 02:24:25" (1/1) ... [2024-02-07 14:24:26,012 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 02:24:25" (1/1) ... [2024-02-07 14:24:26,014 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 02:24:25" (1/1) ... [2024-02-07 14:24:26,016 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 02:24:25" (1/1) ... [2024-02-07 14:24:26,017 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 02:24:25" (1/1) ... [2024-02-07 14:24:26,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:26,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:26,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:26,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:26,021 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 02:24:25" (1/1) ... [2024-02-07 14:24:26,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:26,062 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 14:24:26,084 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 14:24:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:24:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:26,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:26,099 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:26,099 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 14:24:26,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 14:24:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:24:26,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:26,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:26,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:26,102 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 14:24:26,216 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:26,218 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:26,463 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:26,466 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:26,594 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:26,594 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:26,594 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:26 BoogieIcfgContainer [2024-02-07 14:24:26,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:26,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:26,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:26,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:26,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:25" (1/4) ... [2024-02-07 14:24:26,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276d2bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:26, skipping insertion in model container [2024-02-07 14:24:26,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:25" (2/4) ... [2024-02-07 14:24:26,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276d2bf0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:26, skipping insertion in model container [2024-02-07 14:24:26,602 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 02:24:25" (3/4) ... [2024-02-07 14:24:26,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276d2bf0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:26, skipping insertion in model container [2024-02-07 14:24:26,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:26" (4/4) ... [2024-02-07 14:24:26,605 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:26,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:26,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-02-07 14:24:26,622 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:26,686 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:26,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 14:24:26,790 INFO L124 PetriNetUnfolderBase]: 1/58 cut-off events. [2024-02-07 14:24:26,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:26,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 172 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-02-07 14:24:26,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 14:24:26,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2024-02-07 14:24:26,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:26,818 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;@4f5294ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:26,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-02-07 14:24:26,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:26,822 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:26,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:26,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:26,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:26,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:26,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash 9763270, now seen corresponding path program 1 times [2024-02-07 14:24:26,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:26,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588141811] [2024-02-07 14:24:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:27,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:27,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588141811] [2024-02-07 14:24:27,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588141811] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:27,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:27,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:27,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552891997] [2024-02-07 14:24:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:27,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:27,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:27,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:27,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:27,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:27,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:28,446 INFO L124 PetriNetUnfolderBase]: 7136/11469 cut-off events. [2024-02-07 14:24:28,446 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-02-07 14:24:28,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21671 conditions, 11469 events. 7136/11469 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 84402 event pairs, 2864 based on Foata normal form. 318/8532 useless extension candidates. Maximal degree in co-relation 21660. Up to 6163 conditions per place. [2024-02-07 14:24:28,540 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 49 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-02-07 14:24:28,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 241 flow [2024-02-07 14:24:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-02-07 14:24:28,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6775956284153005 [2024-02-07 14:24:28,553 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 3 states and 124 transitions. [2024-02-07 14:24:28,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 241 flow [2024-02-07 14:24:28,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:28,560 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 106 flow [2024-02-07 14:24:28,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-02-07 14:24:28,565 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -11 predicate places. [2024-02-07 14:24:28,565 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 106 flow [2024-02-07 14:24:28,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:28,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:28,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:24:28,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:28,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:28,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:28,567 INFO L85 PathProgramCache]: Analyzing trace with hash 302661751, now seen corresponding path program 1 times [2024-02-07 14:24:28,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:28,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074721954] [2024-02-07 14:24:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:28,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:28,641 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 14:24:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:28,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074721954] [2024-02-07 14:24:28,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074721954] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:28,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:28,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470900742] [2024-02-07 14:24:28,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:28,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:28,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 14:24:28,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:28,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:28,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:29,601 INFO L124 PetriNetUnfolderBase]: 6489/11122 cut-off events. [2024-02-07 14:24:29,601 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-02-07 14:24:29,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21338 conditions, 11122 events. 6489/11122 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 86295 event pairs, 1579 based on Foata normal form. 0/8111 useless extension candidates. Maximal degree in co-relation 21327. Up to 8562 conditions per place. [2024-02-07 14:24:29,683 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 48 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-02-07 14:24:29,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 64 transitions, 249 flow [2024-02-07 14:24:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 14:24:29,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2024-02-07 14:24:29,687 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 106 flow. Second operand 3 states and 104 transitions. [2024-02-07 14:24:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 64 transitions, 249 flow [2024-02-07 14:24:29,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:29,690 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 114 flow [2024-02-07 14:24:29,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 14:24:29,691 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:29,691 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 114 flow [2024-02-07 14:24:29,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 14:24:29,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:29,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:29,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:29,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:29,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1199821190, now seen corresponding path program 1 times [2024-02-07 14:24:29,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856018782] [2024-02-07 14:24:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856018782] [2024-02-07 14:24:29,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856018782] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:29,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:29,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:29,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341791294] [2024-02-07 14:24:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:29,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:29,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:29,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 14:24:29,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:29,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:30,466 INFO L124 PetriNetUnfolderBase]: 4965/7491 cut-off events. [2024-02-07 14:24:30,467 INFO L125 PetriNetUnfolderBase]: For 1026/1026 co-relation queries the response was YES. [2024-02-07 14:24:30,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16255 conditions, 7491 events. 4965/7491 cut-off events. For 1026/1026 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 46137 event pairs, 1585 based on Foata normal form. 0/6517 useless extension candidates. Maximal degree in co-relation 16243. Up to 6160 conditions per place. [2024-02-07 14:24:30,508 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 51 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-02-07 14:24:30,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 286 flow [2024-02-07 14:24:30,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-02-07 14:24:30,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6010928961748634 [2024-02-07 14:24:30,512 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 114 flow. Second operand 3 states and 110 transitions. [2024-02-07 14:24:30,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 286 flow [2024-02-07 14:24:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:30,515 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 142 flow [2024-02-07 14:24:30,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-02-07 14:24:30,516 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:30,516 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 142 flow [2024-02-07 14:24:30,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 14:24:30,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:30,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:30,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:30,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:30,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2027826719, now seen corresponding path program 1 times [2024-02-07 14:24:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590752639] [2024-02-07 14:24:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:30,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590752639] [2024-02-07 14:24:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590752639] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650697285] [2024-02-07 14:24:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:30,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:30,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:30,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:30,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:30,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:30,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:31,211 INFO L124 PetriNetUnfolderBase]: 4465/7539 cut-off events. [2024-02-07 14:24:31,212 INFO L125 PetriNetUnfolderBase]: For 1531/1548 co-relation queries the response was YES. [2024-02-07 14:24:31,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17297 conditions, 7539 events. 4465/7539 cut-off events. For 1531/1548 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 53912 event pairs, 3725 based on Foata normal form. 88/6523 useless extension candidates. Maximal degree in co-relation 17284. Up to 5817 conditions per place. [2024-02-07 14:24:31,259 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 53 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-02-07 14:24:31,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 313 flow [2024-02-07 14:24:31,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 14:24:31,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2024-02-07 14:24:31,263 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 142 flow. Second operand 3 states and 104 transitions. [2024-02-07 14:24:31,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 313 flow [2024-02-07 14:24:31,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:31,267 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 150 flow [2024-02-07 14:24:31,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-02-07 14:24:31,269 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2024-02-07 14:24:31,269 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 150 flow [2024-02-07 14:24:31,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:31,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:31,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:31,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:31,270 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:31,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1733768307, now seen corresponding path program 1 times [2024-02-07 14:24:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36987642] [2024-02-07 14:24:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:31,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:31,355 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 14:24:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:31,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36987642] [2024-02-07 14:24:31,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36987642] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:31,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490706525] [2024-02-07 14:24:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:31,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:31,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:24:31,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:31,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:31,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:24:31,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:32,004 INFO L124 PetriNetUnfolderBase]: 4465/7558 cut-off events. [2024-02-07 14:24:32,004 INFO L125 PetriNetUnfolderBase]: For 3279/3311 co-relation queries the response was YES. [2024-02-07 14:24:32,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18168 conditions, 7558 events. 4465/7558 cut-off events. For 3279/3311 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 54466 event pairs, 4167 based on Foata normal form. 0/6445 useless extension candidates. Maximal degree in co-relation 18154. Up to 6462 conditions per place. [2024-02-07 14:24:32,069 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 34 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-02-07 14:24:32,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 218 flow [2024-02-07 14:24:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-02-07 14:24:32,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426229508196721 [2024-02-07 14:24:32,072 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 150 flow. Second operand 3 states and 81 transitions. [2024-02-07 14:24:32,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 218 flow [2024-02-07 14:24:32,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:32,076 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 146 flow [2024-02-07 14:24:32,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-02-07 14:24:32,078 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 14:24:32,079 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 146 flow [2024-02-07 14:24:32,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:32,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:32,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:32,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:32,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:32,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:32,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1561881842, now seen corresponding path program 1 times [2024-02-07 14:24:32,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:32,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017668679] [2024-02-07 14:24:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:32,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:32,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:32,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017668679] [2024-02-07 14:24:32,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017668679] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:32,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:32,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:32,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404534886] [2024-02-07 14:24:32,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:32,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:32,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:32,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 14:24:32,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:32,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:32,588 INFO L124 PetriNetUnfolderBase]: 3599/5997 cut-off events. [2024-02-07 14:24:32,589 INFO L125 PetriNetUnfolderBase]: For 2173/2196 co-relation queries the response was YES. [2024-02-07 14:24:32,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13836 conditions, 5997 events. 3599/5997 cut-off events. For 2173/2196 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40027 event pairs, 1415 based on Foata normal form. 356/5560 useless extension candidates. Maximal degree in co-relation 13825. Up to 4108 conditions per place. [2024-02-07 14:24:32,629 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 52 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-02-07 14:24:32,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 299 flow [2024-02-07 14:24:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-07 14:24:32,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5519125683060109 [2024-02-07 14:24:32,631 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 146 flow. Second operand 3 states and 101 transitions. [2024-02-07 14:24:32,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 299 flow [2024-02-07 14:24:32,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:32,634 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 135 flow [2024-02-07 14:24:32,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-02-07 14:24:32,635 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 14:24:32,635 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 135 flow [2024-02-07 14:24:32,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 14:24:32,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:32,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:32,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:32,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash -245964598, now seen corresponding path program 1 times [2024-02-07 14:24:32,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644374894] [2024-02-07 14:24:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:32,689 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 14:24:32,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:32,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644374894] [2024-02-07 14:24:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644374894] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588031369] [2024-02-07 14:24:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:32,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:32,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:32,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:32,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:32,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:32,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:33,116 INFO L124 PetriNetUnfolderBase]: 3252/5242 cut-off events. [2024-02-07 14:24:33,116 INFO L125 PetriNetUnfolderBase]: For 1438/1438 co-relation queries the response was YES. [2024-02-07 14:24:33,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12435 conditions, 5242 events. 3252/5242 cut-off events. For 1438/1438 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 33608 event pairs, 1007 based on Foata normal form. 150/4745 useless extension candidates. Maximal degree in co-relation 12424. Up to 3269 conditions per place. [2024-02-07 14:24:33,155 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 51 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-02-07 14:24:33,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 298 flow [2024-02-07 14:24:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-02-07 14:24:33,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409836065573771 [2024-02-07 14:24:33,157 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 135 flow. Second operand 3 states and 99 transitions. [2024-02-07 14:24:33,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 298 flow [2024-02-07 14:24:33,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:33,161 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 130 flow [2024-02-07 14:24:33,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-02-07 14:24:33,162 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:33,163 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 130 flow [2024-02-07 14:24:33,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:33,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:33,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:33,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:33,164 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:33,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash -295956869, now seen corresponding path program 1 times [2024-02-07 14:24:33,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:33,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853490332] [2024-02-07 14:24:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:33,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:33,318 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 14:24:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:33,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853490332] [2024-02-07 14:24:33,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853490332] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:33,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:33,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180166313] [2024-02-07 14:24:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:33,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:33,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:33,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:24:33,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 14:24:33,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:33,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:24:33,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:33,791 INFO L124 PetriNetUnfolderBase]: 3205/5631 cut-off events. [2024-02-07 14:24:33,792 INFO L125 PetriNetUnfolderBase]: For 1286/1286 co-relation queries the response was YES. [2024-02-07 14:24:33,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12849 conditions, 5631 events. 3205/5631 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 39371 event pairs, 597 based on Foata normal form. 179/4984 useless extension candidates. Maximal degree in co-relation 12839. Up to 2593 conditions per place. [2024-02-07 14:24:33,820 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 54 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-02-07 14:24:33,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 330 flow [2024-02-07 14:24:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:33,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-02-07 14:24:33,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122950819672131 [2024-02-07 14:24:33,823 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 130 flow. Second operand 4 states and 125 transitions. [2024-02-07 14:24:33,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 330 flow [2024-02-07 14:24:33,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:33,828 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 155 flow [2024-02-07 14:24:33,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2024-02-07 14:24:33,830 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -6 predicate places. [2024-02-07 14:24:33,830 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 155 flow [2024-02-07 14:24:33,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 14:24:33,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:33,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:24:33,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:33,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:33,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1355680441, now seen corresponding path program 1 times [2024-02-07 14:24:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:33,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337366261] [2024-02-07 14:24:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:33,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:33,862 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 14:24:33,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337366261] [2024-02-07 14:24:33,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337366261] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:33,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:33,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998863719] [2024-02-07 14:24:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:33,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:33,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:33,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:33,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:33,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:33,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,108 INFO L124 PetriNetUnfolderBase]: 1852/3270 cut-off events. [2024-02-07 14:24:34,108 INFO L125 PetriNetUnfolderBase]: For 1414/1414 co-relation queries the response was YES. [2024-02-07 14:24:34,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 3270 events. 1852/3270 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20321 event pairs, 792 based on Foata normal form. 98/3218 useless extension candidates. Maximal degree in co-relation 7920. Up to 2510 conditions per place. [2024-02-07 14:24:34,126 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 35 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2024-02-07 14:24:34,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 250 flow [2024-02-07 14:24:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-02-07 14:24:34,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191256830601093 [2024-02-07 14:24:34,128 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 155 flow. Second operand 3 states and 95 transitions. [2024-02-07 14:24:34,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 250 flow [2024-02-07 14:24:34,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:34,131 INFO L231 Difference]: Finished difference. Result has 57 places, 40 transitions, 133 flow [2024-02-07 14:24:34,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2024-02-07 14:24:34,132 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 14:24:34,132 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 133 flow [2024-02-07 14:24:34,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:24:34,133 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:34,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2109297006, now seen corresponding path program 1 times [2024-02-07 14:24:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272098014] [2024-02-07 14:24:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:34,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:34,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:34,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272098014] [2024-02-07 14:24:34,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272098014] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:34,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:34,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:34,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408583538] [2024-02-07 14:24:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:34,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:34,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:34,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:24:34,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 14:24:34,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:34,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:24:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,460 INFO L124 PetriNetUnfolderBase]: 1127/2043 cut-off events. [2024-02-07 14:24:34,460 INFO L125 PetriNetUnfolderBase]: For 961/961 co-relation queries the response was YES. [2024-02-07 14:24:34,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 2043 events. 1127/2043 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11396 event pairs, 149 based on Foata normal form. 98/2051 useless extension candidates. Maximal degree in co-relation 4935. Up to 593 conditions per place. [2024-02-07 14:24:34,471 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 57 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2024-02-07 14:24:34,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 378 flow [2024-02-07 14:24:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-02-07 14:24:34,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852459016393443 [2024-02-07 14:24:34,473 INFO L175 Difference]: Start difference. First operand has 57 places, 40 transitions, 133 flow. Second operand 5 states and 148 transitions. [2024-02-07 14:24:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 378 flow [2024-02-07 14:24:34,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 362 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:34,477 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 166 flow [2024-02-07 14:24:34,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2024-02-07 14:24:34,478 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 14:24:34,478 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 166 flow [2024-02-07 14:24:34,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 14:24:34,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:24:34,479 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:34,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 150609204, now seen corresponding path program 1 times [2024-02-07 14:24:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047070358] [2024-02-07 14:24:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047070358] [2024-02-07 14:24:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047070358] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:34,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038126934] [2024-02-07 14:24:34,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:34,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:34,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:34,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:34,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:34,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:34,955 INFO L124 PetriNetUnfolderBase]: 1064/1926 cut-off events. [2024-02-07 14:24:34,955 INFO L125 PetriNetUnfolderBase]: For 1527/1527 co-relation queries the response was YES. [2024-02-07 14:24:34,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5024 conditions, 1926 events. 1064/1926 cut-off events. For 1527/1527 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10736 event pairs, 185 based on Foata normal form. 4/1864 useless extension candidates. Maximal degree in co-relation 5011. Up to 1213 conditions per place. [2024-02-07 14:24:34,967 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 66 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-02-07 14:24:34,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 508 flow [2024-02-07 14:24:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-02-07 14:24:34,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2024-02-07 14:24:34,969 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 166 flow. Second operand 6 states and 168 transitions. [2024-02-07 14:24:34,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 508 flow [2024-02-07 14:24:34,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 452 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:34,973 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 200 flow [2024-02-07 14:24:34,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2024-02-07 14:24:34,974 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-02-07 14:24:34,974 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 200 flow [2024-02-07 14:24:34,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:34,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:34,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:24:34,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:34,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2059399008, now seen corresponding path program 2 times [2024-02-07 14:24:34,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:34,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577350409] [2024-02-07 14:24:34,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:34,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:35,113 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 14:24:35,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:35,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577350409] [2024-02-07 14:24:35,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577350409] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:35,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:35,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:35,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080960860] [2024-02-07 14:24:35,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:35,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:35,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:35,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:35,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:35,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:35,354 INFO L124 PetriNetUnfolderBase]: 1153/2120 cut-off events. [2024-02-07 14:24:35,354 INFO L125 PetriNetUnfolderBase]: For 1370/1384 co-relation queries the response was YES. [2024-02-07 14:24:35,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5735 conditions, 2120 events. 1153/2120 cut-off events. For 1370/1384 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 12281 event pairs, 134 based on Foata normal form. 12/2066 useless extension candidates. Maximal degree in co-relation 5720. Up to 1247 conditions per place. [2024-02-07 14:24:35,368 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 63 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-02-07 14:24:35,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 485 flow [2024-02-07 14:24:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-02-07 14:24:35,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721311475409836 [2024-02-07 14:24:35,370 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 200 flow. Second operand 5 states and 144 transitions. [2024-02-07 14:24:35,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 485 flow [2024-02-07 14:24:35,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 485 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:35,374 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 245 flow [2024-02-07 14:24:35,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2024-02-07 14:24:35,375 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-02-07 14:24:35,375 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 245 flow [2024-02-07 14:24:35,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:35,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:35,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:24:35,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:35,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash -867082528, now seen corresponding path program 3 times [2024-02-07 14:24:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:35,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281176599] [2024-02-07 14:24:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:35,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:35,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:35,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281176599] [2024-02-07 14:24:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281176599] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:35,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:35,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:35,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129530303] [2024-02-07 14:24:35,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:35,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:35,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:35,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:35,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:35,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:35,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:35,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:35,882 INFO L124 PetriNetUnfolderBase]: 1807/3424 cut-off events. [2024-02-07 14:24:35,882 INFO L125 PetriNetUnfolderBase]: For 2832/2834 co-relation queries the response was YES. [2024-02-07 14:24:35,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9481 conditions, 3424 events. 1807/3424 cut-off events. For 2832/2834 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 21996 event pairs, 309 based on Foata normal form. 36/3318 useless extension candidates. Maximal degree in co-relation 9462. Up to 1606 conditions per place. [2024-02-07 14:24:35,907 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 89 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-02-07 14:24:35,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 118 transitions, 745 flow [2024-02-07 14:24:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-02-07 14:24:35,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2024-02-07 14:24:35,909 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 245 flow. Second operand 6 states and 180 transitions. [2024-02-07 14:24:35,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 118 transitions, 745 flow [2024-02-07 14:24:35,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 732 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:35,916 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 389 flow [2024-02-07 14:24:35,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-02-07 14:24:35,917 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2024-02-07 14:24:35,917 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 389 flow [2024-02-07 14:24:35,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:35,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:35,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:24:35,918 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:35,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash -826295070, now seen corresponding path program 1 times [2024-02-07 14:24:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:35,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967308027] [2024-02-07 14:24:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967308027] [2024-02-07 14:24:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967308027] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:36,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811451800] [2024-02-07 14:24:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:36,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:24:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:24:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:24:36,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:24:36,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:36,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:36,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:24:36,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:36,301 INFO L124 PetriNetUnfolderBase]: 1335/2274 cut-off events. [2024-02-07 14:24:36,301 INFO L125 PetriNetUnfolderBase]: For 3984/4024 co-relation queries the response was YES. [2024-02-07 14:24:36,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7631 conditions, 2274 events. 1335/2274 cut-off events. For 3984/4024 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11776 event pairs, 127 based on Foata normal form. 101/2332 useless extension candidates. Maximal degree in co-relation 7608. Up to 760 conditions per place. [2024-02-07 14:24:36,314 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 100 selfloop transitions, 11 changer transitions 1/125 dead transitions. [2024-02-07 14:24:36,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 125 transitions, 959 flow [2024-02-07 14:24:36,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:24:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:24:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-02-07 14:24:36,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344262295081967 [2024-02-07 14:24:36,316 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 389 flow. Second operand 6 states and 159 transitions. [2024-02-07 14:24:36,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 125 transitions, 959 flow [2024-02-07 14:24:36,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 125 transitions, 891 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:36,323 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 392 flow [2024-02-07 14:24:36,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=392, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-02-07 14:24:36,324 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2024-02-07 14:24:36,324 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 392 flow [2024-02-07 14:24:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:36,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:36,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:36,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:24:36,325 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:36,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:36,326 INFO L85 PathProgramCache]: Analyzing trace with hash 613143914, now seen corresponding path program 1 times [2024-02-07 14:24:36,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:36,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475571498] [2024-02-07 14:24:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:36,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:36,471 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 14:24:36,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475571498] [2024-02-07 14:24:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475571498] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:36,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738065003] [2024-02-07 14:24:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:36,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:36,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:36,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:36,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:36,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:36,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:36,848 INFO L124 PetriNetUnfolderBase]: 1823/3429 cut-off events. [2024-02-07 14:24:36,849 INFO L125 PetriNetUnfolderBase]: For 6221/6273 co-relation queries the response was YES. [2024-02-07 14:24:36,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10850 conditions, 3429 events. 1823/3429 cut-off events. For 6221/6273 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21828 event pairs, 258 based on Foata normal form. 40/3379 useless extension candidates. Maximal degree in co-relation 10827. Up to 738 conditions per place. [2024-02-07 14:24:36,870 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 137 selfloop transitions, 25 changer transitions 0/175 dead transitions. [2024-02-07 14:24:36,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 1366 flow [2024-02-07 14:24:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:24:36,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:24:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-02-07 14:24:36,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491803278688525 [2024-02-07 14:24:36,872 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 392 flow. Second operand 10 states and 274 transitions. [2024-02-07 14:24:36,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 1366 flow [2024-02-07 14:24:36,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 175 transitions, 1091 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-02-07 14:24:36,895 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 509 flow [2024-02-07 14:24:36,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=509, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2024-02-07 14:24:36,896 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-02-07 14:24:36,896 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 509 flow [2024-02-07 14:24:36,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:36,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:36,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 14:24:36,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:36,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -944194506, now seen corresponding path program 2 times [2024-02-07 14:24:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113812200] [2024-02-07 14:24:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:37,062 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 14:24:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113812200] [2024-02-07 14:24:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113812200] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:37,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:37,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:37,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517491424] [2024-02-07 14:24:37,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:37,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:37,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:37,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 509 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:37,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:37,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:37,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:37,494 INFO L124 PetriNetUnfolderBase]: 2315/4344 cut-off events. [2024-02-07 14:24:37,494 INFO L125 PetriNetUnfolderBase]: For 6906/6910 co-relation queries the response was YES. [2024-02-07 14:24:37,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12832 conditions, 4344 events. 2315/4344 cut-off events. For 6906/6910 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 29012 event pairs, 505 based on Foata normal form. 8/4234 useless extension candidates. Maximal degree in co-relation 12808. Up to 1984 conditions per place. [2024-02-07 14:24:37,514 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 109 selfloop transitions, 30 changer transitions 0/152 dead transitions. [2024-02-07 14:24:37,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 152 transitions, 1128 flow [2024-02-07 14:24:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-02-07 14:24:37,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48009367681498827 [2024-02-07 14:24:37,516 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 509 flow. Second operand 7 states and 205 transitions. [2024-02-07 14:24:37,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 152 transitions, 1128 flow [2024-02-07 14:24:37,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 1080 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-02-07 14:24:37,532 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 667 flow [2024-02-07 14:24:37,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2024-02-07 14:24:37,532 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2024-02-07 14:24:37,532 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 667 flow [2024-02-07 14:24:37,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:37,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:37,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:37,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 14:24:37,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:37,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash -109133860, now seen corresponding path program 3 times [2024-02-07 14:24:37,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:37,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163280096] [2024-02-07 14:24:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:37,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:37,704 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 14:24:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163280096] [2024-02-07 14:24:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163280096] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:37,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:37,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291290732] [2024-02-07 14:24:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:37,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:37,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:37,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:37,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:37,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 667 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:37,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:37,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:37,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:38,130 INFO L124 PetriNetUnfolderBase]: 2303/4312 cut-off events. [2024-02-07 14:24:38,130 INFO L125 PetriNetUnfolderBase]: For 8698/8704 co-relation queries the response was YES. [2024-02-07 14:24:38,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13315 conditions, 4312 events. 2303/4312 cut-off events. For 8698/8704 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28786 event pairs, 529 based on Foata normal form. 8/4202 useless extension candidates. Maximal degree in co-relation 13286. Up to 1984 conditions per place. [2024-02-07 14:24:38,149 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 117 selfloop transitions, 30 changer transitions 0/160 dead transitions. [2024-02-07 14:24:38,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 160 transitions, 1243 flow [2024-02-07 14:24:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-02-07 14:24:38,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713114754098361 [2024-02-07 14:24:38,153 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 667 flow. Second operand 8 states and 230 transitions. [2024-02-07 14:24:38,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 160 transitions, 1243 flow [2024-02-07 14:24:38,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 160 transitions, 1184 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:38,187 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 675 flow [2024-02-07 14:24:38,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=675, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-02-07 14:24:38,187 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 32 predicate places. [2024-02-07 14:24:38,187 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 675 flow [2024-02-07 14:24:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:38,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:38,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:38,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 14:24:38,188 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:38,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash -134325736, now seen corresponding path program 4 times [2024-02-07 14:24:38,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:38,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190793640] [2024-02-07 14:24:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:38,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:38,322 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 14:24:38,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:38,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190793640] [2024-02-07 14:24:38,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190793640] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:38,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:38,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143812413] [2024-02-07 14:24:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:38,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:38,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:38,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 675 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:38,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:38,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:38,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:38,912 INFO L124 PetriNetUnfolderBase]: 2639/5102 cut-off events. [2024-02-07 14:24:38,912 INFO L125 PetriNetUnfolderBase]: For 10931/10985 co-relation queries the response was YES. [2024-02-07 14:24:38,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14994 conditions, 5102 events. 2639/5102 cut-off events. For 10931/10985 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36364 event pairs, 324 based on Foata normal form. 40/4988 useless extension candidates. Maximal degree in co-relation 14964. Up to 1601 conditions per place. [2024-02-07 14:24:38,932 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 138 selfloop transitions, 36 changer transitions 0/187 dead transitions. [2024-02-07 14:24:38,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 187 transitions, 1456 flow [2024-02-07 14:24:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:24:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:24:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-02-07 14:24:38,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44754098360655736 [2024-02-07 14:24:38,935 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 675 flow. Second operand 10 states and 273 transitions. [2024-02-07 14:24:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 187 transitions, 1456 flow [2024-02-07 14:24:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 187 transitions, 1339 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-02-07 14:24:38,953 INFO L231 Difference]: Finished difference. Result has 104 places, 95 transitions, 745 flow [2024-02-07 14:24:38,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=745, PETRI_PLACES=104, PETRI_TRANSITIONS=95} [2024-02-07 14:24:38,954 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 37 predicate places. [2024-02-07 14:24:38,954 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 95 transitions, 745 flow [2024-02-07 14:24:38,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:38,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:38,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:38,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 14:24:38,955 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:38,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:38,955 INFO L85 PathProgramCache]: Analyzing trace with hash -316210706, now seen corresponding path program 5 times [2024-02-07 14:24:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:38,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75777278] [2024-02-07 14:24:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:39,122 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 14:24:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:39,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75777278] [2024-02-07 14:24:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75777278] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:39,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102475187] [2024-02-07 14:24:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:39,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:39,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:39,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:39,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 95 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:39,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:39,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:39,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:39,688 INFO L124 PetriNetUnfolderBase]: 2627/5060 cut-off events. [2024-02-07 14:24:39,688 INFO L125 PetriNetUnfolderBase]: For 12088/12094 co-relation queries the response was YES. [2024-02-07 14:24:39,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15329 conditions, 5060 events. 2627/5060 cut-off events. For 12088/12094 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 35944 event pairs, 494 based on Foata normal form. 8/4895 useless extension candidates. Maximal degree in co-relation 15296. Up to 1949 conditions per place. [2024-02-07 14:24:39,718 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 153 selfloop transitions, 40 changer transitions 0/206 dead transitions. [2024-02-07 14:24:39,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 206 transitions, 1638 flow [2024-02-07 14:24:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:24:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:24:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 321 transitions. [2024-02-07 14:24:39,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385245901639344 [2024-02-07 14:24:39,720 INFO L175 Difference]: Start difference. First operand has 104 places, 95 transitions, 745 flow. Second operand 12 states and 321 transitions. [2024-02-07 14:24:39,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 206 transitions, 1638 flow [2024-02-07 14:24:39,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 206 transitions, 1590 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:39,765 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 922 flow [2024-02-07 14:24:39,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=922, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-02-07 14:24:39,766 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 48 predicate places. [2024-02-07 14:24:39,766 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 922 flow [2024-02-07 14:24:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:39,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:39,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:39,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 14:24:39,767 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:39,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2140890146, now seen corresponding path program 6 times [2024-02-07 14:24:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:39,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613933546] [2024-02-07 14:24:39,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:39,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:39,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:39,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613933546] [2024-02-07 14:24:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613933546] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:39,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:39,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:39,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154555820] [2024-02-07 14:24:39,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:39,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:39,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:39,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:39,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:39,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:39,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 922 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:39,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:39,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:40,603 INFO L124 PetriNetUnfolderBase]: 3073/5936 cut-off events. [2024-02-07 14:24:40,603 INFO L125 PetriNetUnfolderBase]: For 15590/15598 co-relation queries the response was YES. [2024-02-07 14:24:40,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18452 conditions, 5936 events. 3073/5936 cut-off events. For 15590/15598 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 43684 event pairs, 638 based on Foata normal form. 8/5742 useless extension candidates. Maximal degree in co-relation 18416. Up to 2094 conditions per place. [2024-02-07 14:24:40,635 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 155 selfloop transitions, 47 changer transitions 0/215 dead transitions. [2024-02-07 14:24:40,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 215 transitions, 1912 flow [2024-02-07 14:24:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:24:40,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:24:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 323 transitions. [2024-02-07 14:24:40,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412568306010929 [2024-02-07 14:24:40,637 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 922 flow. Second operand 12 states and 323 transitions. [2024-02-07 14:24:40,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 215 transitions, 1912 flow [2024-02-07 14:24:40,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 215 transitions, 1780 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:40,682 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 1086 flow [2024-02-07 14:24:40,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1086, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2024-02-07 14:24:40,682 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 58 predicate places. [2024-02-07 14:24:40,682 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 1086 flow [2024-02-07 14:24:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:40,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:40,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:40,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 14:24:40,683 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:40,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1992813068, now seen corresponding path program 7 times [2024-02-07 14:24:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097951751] [2024-02-07 14:24:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:40,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:40,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:40,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:40,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097951751] [2024-02-07 14:24:40,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097951751] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:40,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:40,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:40,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770168347] [2024-02-07 14:24:40,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:40,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:40,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:40,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 1086 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:40,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:40,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:40,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:41,505 INFO L124 PetriNetUnfolderBase]: 3281/6374 cut-off events. [2024-02-07 14:24:41,505 INFO L125 PetriNetUnfolderBase]: For 18085/18093 co-relation queries the response was YES. [2024-02-07 14:24:41,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19982 conditions, 6374 events. 3281/6374 cut-off events. For 18085/18093 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 47934 event pairs, 674 based on Foata normal form. 8/6157 useless extension candidates. Maximal degree in co-relation 19944. Up to 3020 conditions per place. [2024-02-07 14:24:41,536 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 138 selfloop transitions, 53 changer transitions 0/204 dead transitions. [2024-02-07 14:24:41,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 204 transitions, 1853 flow [2024-02-07 14:24:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:24:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:24:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-02-07 14:24:41,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248633879781421 [2024-02-07 14:24:41,539 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 1086 flow. Second operand 12 states and 311 transitions. [2024-02-07 14:24:41,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 204 transitions, 1853 flow [2024-02-07 14:24:41,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 204 transitions, 1824 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:41,588 INFO L231 Difference]: Finished difference. Result has 136 places, 119 transitions, 1221 flow [2024-02-07 14:24:41,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1221, PETRI_PLACES=136, PETRI_TRANSITIONS=119} [2024-02-07 14:24:41,589 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 69 predicate places. [2024-02-07 14:24:41,589 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 119 transitions, 1221 flow [2024-02-07 14:24:41,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:41,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:41,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:41,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-07 14:24:41,590 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:41,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash 204639488, now seen corresponding path program 8 times [2024-02-07 14:24:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:41,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092969936] [2024-02-07 14:24:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:41,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:41,748 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 14:24:41,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092969936] [2024-02-07 14:24:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092969936] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:41,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:41,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047334418] [2024-02-07 14:24:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:41,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:41,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 119 transitions, 1221 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:41,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:41,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:41,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:42,385 INFO L124 PetriNetUnfolderBase]: 3269/6344 cut-off events. [2024-02-07 14:24:42,385 INFO L125 PetriNetUnfolderBase]: For 20953/20959 co-relation queries the response was YES. [2024-02-07 14:24:42,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20416 conditions, 6344 events. 3269/6344 cut-off events. For 20953/20959 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 47600 event pairs, 674 based on Foata normal form. 8/6127 useless extension candidates. Maximal degree in co-relation 20376. Up to 3000 conditions per place. [2024-02-07 14:24:42,421 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 140 selfloop transitions, 51 changer transitions 0/204 dead transitions. [2024-02-07 14:24:42,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 204 transitions, 1954 flow [2024-02-07 14:24:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-07 14:24:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-07 14:24:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-02-07 14:24:42,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262295081967213 [2024-02-07 14:24:42,423 INFO L175 Difference]: Start difference. First operand has 136 places, 119 transitions, 1221 flow. Second operand 12 states and 312 transitions. [2024-02-07 14:24:42,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 204 transitions, 1954 flow [2024-02-07 14:24:42,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 204 transitions, 1871 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-07 14:24:42,479 INFO L231 Difference]: Finished difference. Result has 144 places, 121 transitions, 1290 flow [2024-02-07 14:24:42,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1290, PETRI_PLACES=144, PETRI_TRANSITIONS=121} [2024-02-07 14:24:42,480 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 77 predicate places. [2024-02-07 14:24:42,480 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 121 transitions, 1290 flow [2024-02-07 14:24:42,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:42,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:42,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-07 14:24:42,481 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:42,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash 872722594, now seen corresponding path program 9 times [2024-02-07 14:24:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:42,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049015859] [2024-02-07 14:24:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:42,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:42,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049015859] [2024-02-07 14:24:42,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049015859] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:42,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:42,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:42,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889309158] [2024-02-07 14:24:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:42,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:42,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:42,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 121 transitions, 1290 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:42,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:42,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:42,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:43,378 INFO L124 PetriNetUnfolderBase]: 3788/7319 cut-off events. [2024-02-07 14:24:43,378 INFO L125 PetriNetUnfolderBase]: For 24716/24722 co-relation queries the response was YES. [2024-02-07 14:24:43,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23538 conditions, 7319 events. 3788/7319 cut-off events. For 24716/24722 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 55959 event pairs, 1121 based on Foata normal form. 8/7097 useless extension candidates. Maximal degree in co-relation 23494. Up to 4406 conditions per place. [2024-02-07 14:24:43,410 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 157 selfloop transitions, 24 changer transitions 0/194 dead transitions. [2024-02-07 14:24:43,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 194 transitions, 2061 flow [2024-02-07 14:24:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-02-07 14:24:43,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847775175644028 [2024-02-07 14:24:43,411 INFO L175 Difference]: Start difference. First operand has 144 places, 121 transitions, 1290 flow. Second operand 7 states and 207 transitions. [2024-02-07 14:24:43,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 194 transitions, 2061 flow [2024-02-07 14:24:43,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 194 transitions, 1915 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-02-07 14:24:43,482 INFO L231 Difference]: Finished difference. Result has 145 places, 127 transitions, 1330 flow [2024-02-07 14:24:43,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1330, PETRI_PLACES=145, PETRI_TRANSITIONS=127} [2024-02-07 14:24:43,483 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 78 predicate places. [2024-02-07 14:24:43,483 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 127 transitions, 1330 flow [2024-02-07 14:24:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:43,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:43,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:43,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-07 14:24:43,484 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:43,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2103907044, now seen corresponding path program 10 times [2024-02-07 14:24:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265133306] [2024-02-07 14:24:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:43,638 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 14:24:43,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:43,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265133306] [2024-02-07 14:24:43,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265133306] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:43,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:43,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:43,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217724309] [2024-02-07 14:24:43,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:43,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:43,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:43,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:43,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:43,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:43,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 127 transitions, 1330 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:43,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:43,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:44,332 INFO L124 PetriNetUnfolderBase]: 3776/7311 cut-off events. [2024-02-07 14:24:44,333 INFO L125 PetriNetUnfolderBase]: For 22342/22348 co-relation queries the response was YES. [2024-02-07 14:24:44,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23334 conditions, 7311 events. 3776/7311 cut-off events. For 22342/22348 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56112 event pairs, 1143 based on Foata normal form. 8/7089 useless extension candidates. Maximal degree in co-relation 23288. Up to 4406 conditions per place. [2024-02-07 14:24:44,384 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 165 selfloop transitions, 24 changer transitions 0/202 dead transitions. [2024-02-07 14:24:44,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 202 transitions, 2033 flow [2024-02-07 14:24:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-02-07 14:24:44,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774590163934426 [2024-02-07 14:24:44,386 INFO L175 Difference]: Start difference. First operand has 145 places, 127 transitions, 1330 flow. Second operand 8 states and 233 transitions. [2024-02-07 14:24:44,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 202 transitions, 2033 flow [2024-02-07 14:24:44,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 202 transitions, 2015 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:44,478 INFO L231 Difference]: Finished difference. Result has 150 places, 127 transitions, 1366 flow [2024-02-07 14:24:44,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1366, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2024-02-07 14:24:44,478 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 83 predicate places. [2024-02-07 14:24:44,479 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 1366 flow [2024-02-07 14:24:44,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:44,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:44,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:44,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-07 14:24:44,479 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:44,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1648637700, now seen corresponding path program 11 times [2024-02-07 14:24:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732769639] [2024-02-07 14:24:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:44,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:44,609 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 14:24:44,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732769639] [2024-02-07 14:24:44,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732769639] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:44,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:44,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:44,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195884541] [2024-02-07 14:24:44,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:44,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:44,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:44,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:44,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 127 transitions, 1366 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:44,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:44,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:45,425 INFO L124 PetriNetUnfolderBase]: 3938/7669 cut-off events. [2024-02-07 14:24:45,425 INFO L125 PetriNetUnfolderBase]: For 25128/25182 co-relation queries the response was YES. [2024-02-07 14:24:45,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24425 conditions, 7669 events. 3938/7669 cut-off events. For 25128/25182 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 59851 event pairs, 1046 based on Foata normal form. 40/7459 useless extension candidates. Maximal degree in co-relation 24378. Up to 3866 conditions per place. [2024-02-07 14:24:45,461 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 140 selfloop transitions, 33 changer transitions 0/186 dead transitions. [2024-02-07 14:24:45,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 186 transitions, 1946 flow [2024-02-07 14:24:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 14:24:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 14:24:45,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-02-07 14:24:45,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519906323185012 [2024-02-07 14:24:45,463 INFO L175 Difference]: Start difference. First operand has 150 places, 127 transitions, 1366 flow. Second operand 7 states and 193 transitions. [2024-02-07 14:24:45,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 186 transitions, 1946 flow [2024-02-07 14:24:45,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 186 transitions, 1883 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-07 14:24:45,548 INFO L231 Difference]: Finished difference. Result has 151 places, 128 transitions, 1398 flow [2024-02-07 14:24:45,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1398, PETRI_PLACES=151, PETRI_TRANSITIONS=128} [2024-02-07 14:24:45,549 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 84 predicate places. [2024-02-07 14:24:45,549 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 128 transitions, 1398 flow [2024-02-07 14:24:45,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 14:24:45,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:45,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:45,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-07 14:24:45,550 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:45,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:45,550 INFO L85 PathProgramCache]: Analyzing trace with hash 628097288, now seen corresponding path program 12 times [2024-02-07 14:24:45,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:45,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168109999] [2024-02-07 14:24:45,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:45,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:45,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:45,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168109999] [2024-02-07 14:24:45,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168109999] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:45,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:45,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:24:45,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132546546] [2024-02-07 14:24:45,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:45,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:45,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:45,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:45,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 128 transitions, 1398 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:45,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:45,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:45,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:46,432 INFO L124 PetriNetUnfolderBase]: 4113/7922 cut-off events. [2024-02-07 14:24:46,432 INFO L125 PetriNetUnfolderBase]: For 28086/28092 co-relation queries the response was YES. [2024-02-07 14:24:46,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25368 conditions, 7922 events. 4113/7922 cut-off events. For 28086/28092 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 61562 event pairs, 2592 based on Foata normal form. 8/7635 useless extension candidates. Maximal degree in co-relation 25320. Up to 5710 conditions per place. [2024-02-07 14:24:46,479 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 129 selfloop transitions, 36 changer transitions 0/178 dead transitions. [2024-02-07 14:24:46,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 178 transitions, 1946 flow [2024-02-07 14:24:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-02-07 14:24:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42827868852459017 [2024-02-07 14:24:46,481 INFO L175 Difference]: Start difference. First operand has 151 places, 128 transitions, 1398 flow. Second operand 8 states and 209 transitions. [2024-02-07 14:24:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 178 transitions, 1946 flow [2024-02-07 14:24:46,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 178 transitions, 1859 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:46,566 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1433 flow [2024-02-07 14:24:46,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1433, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-02-07 14:24:46,567 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 89 predicate places. [2024-02-07 14:24:46,567 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1433 flow [2024-02-07 14:24:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:46,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:46,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:46,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-07 14:24:46,567 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:46,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash -785017080, now seen corresponding path program 13 times [2024-02-07 14:24:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:46,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555739555] [2024-02-07 14:24:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:46,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555739555] [2024-02-07 14:24:46,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555739555] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:46,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:46,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:24:46,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675473191] [2024-02-07 14:24:46,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:46,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:46,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:46,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:46,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:46,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:46,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1433 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:46,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:46,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:46,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:47,673 INFO L124 PetriNetUnfolderBase]: 5064/9930 cut-off events. [2024-02-07 14:24:47,673 INFO L125 PetriNetUnfolderBase]: For 30551/30557 co-relation queries the response was YES. [2024-02-07 14:24:47,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30071 conditions, 9930 events. 5064/9930 cut-off events. For 30551/30557 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 81913 event pairs, 2560 based on Foata normal form. 8/9557 useless extension candidates. Maximal degree in co-relation 30021. Up to 4334 conditions per place. [2024-02-07 14:24:47,736 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 162 selfloop transitions, 37 changer transitions 0/212 dead transitions. [2024-02-07 14:24:47,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 212 transitions, 2219 flow [2024-02-07 14:24:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-02-07 14:24:47,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46311475409836067 [2024-02-07 14:24:47,737 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1433 flow. Second operand 8 states and 226 transitions. [2024-02-07 14:24:47,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 212 transitions, 2219 flow [2024-02-07 14:24:47,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 212 transitions, 2117 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:47,834 INFO L231 Difference]: Finished difference. Result has 162 places, 133 transitions, 1458 flow [2024-02-07 14:24:47,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1458, PETRI_PLACES=162, PETRI_TRANSITIONS=133} [2024-02-07 14:24:47,835 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 95 predicate places. [2024-02-07 14:24:47,835 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 133 transitions, 1458 flow [2024-02-07 14:24:47,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:47,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:47,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:47,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-07 14:24:47,836 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:47,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1769770538, now seen corresponding path program 14 times [2024-02-07 14:24:47,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544551153] [2024-02-07 14:24:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:47,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:47,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544551153] [2024-02-07 14:24:47,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544551153] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:47,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:47,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:47,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208904041] [2024-02-07 14:24:47,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:47,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:47,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 133 transitions, 1458 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:47,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:47,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:47,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:49,204 INFO L124 PetriNetUnfolderBase]: 6072/11889 cut-off events. [2024-02-07 14:24:49,204 INFO L125 PetriNetUnfolderBase]: For 38009/38015 co-relation queries the response was YES. [2024-02-07 14:24:49,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35479 conditions, 11889 events. 6072/11889 cut-off events. For 38009/38015 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 101733 event pairs, 1641 based on Foata normal form. 8/11523 useless extension candidates. Maximal degree in co-relation 35426. Up to 5085 conditions per place. [2024-02-07 14:24:49,302 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 177 selfloop transitions, 29 changer transitions 0/219 dead transitions. [2024-02-07 14:24:49,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 219 transitions, 2362 flow [2024-02-07 14:24:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-02-07 14:24:49,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453551912568306 [2024-02-07 14:24:49,304 INFO L175 Difference]: Start difference. First operand has 162 places, 133 transitions, 1458 flow. Second operand 9 states and 249 transitions. [2024-02-07 14:24:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 219 transitions, 2362 flow [2024-02-07 14:24:49,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 219 transitions, 2272 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-02-07 14:24:49,457 INFO L231 Difference]: Finished difference. Result has 170 places, 136 transitions, 1501 flow [2024-02-07 14:24:49,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1501, PETRI_PLACES=170, PETRI_TRANSITIONS=136} [2024-02-07 14:24:49,458 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 103 predicate places. [2024-02-07 14:24:49,458 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 136 transitions, 1501 flow [2024-02-07 14:24:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:49,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:49,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-07 14:24:49,459 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:49,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1821675618, now seen corresponding path program 15 times [2024-02-07 14:24:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:49,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128309110] [2024-02-07 14:24:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:49,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128309110] [2024-02-07 14:24:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128309110] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:49,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:49,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:24:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409370964] [2024-02-07 14:24:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:49,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:49,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:49,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:49,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:49,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 136 transitions, 1501 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:49,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:49,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:49,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:50,805 INFO L124 PetriNetUnfolderBase]: 6234/12174 cut-off events. [2024-02-07 14:24:50,805 INFO L125 PetriNetUnfolderBase]: For 42737/42743 co-relation queries the response was YES. [2024-02-07 14:24:50,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36815 conditions, 12174 events. 6234/12174 cut-off events. For 42737/42743 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 103980 event pairs, 3192 based on Foata normal form. 8/11769 useless extension candidates. Maximal degree in co-relation 36757. Up to 5962 conditions per place. [2024-02-07 14:24:50,967 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 184 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-02-07 14:24:50,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2418 flow [2024-02-07 14:24:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 14:24:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 14:24:50,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 301 transitions. [2024-02-07 14:24:50,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485842026825633 [2024-02-07 14:24:50,968 INFO L175 Difference]: Start difference. First operand has 170 places, 136 transitions, 1501 flow. Second operand 11 states and 301 transitions. [2024-02-07 14:24:50,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2418 flow [2024-02-07 14:24:51,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 240 transitions, 2375 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:51,124 INFO L231 Difference]: Finished difference. Result has 181 places, 138 transitions, 1592 flow [2024-02-07 14:24:51,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1592, PETRI_PLACES=181, PETRI_TRANSITIONS=138} [2024-02-07 14:24:51,124 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 114 predicate places. [2024-02-07 14:24:51,124 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 138 transitions, 1592 flow [2024-02-07 14:24:51,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:51,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:51,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:51,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-07 14:24:51,125 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:51,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash -291230402, now seen corresponding path program 16 times [2024-02-07 14:24:51,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:51,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572641152] [2024-02-07 14:24:51,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:51,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:51,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572641152] [2024-02-07 14:24:51,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572641152] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:51,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:51,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668751923] [2024-02-07 14:24:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:51,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:51,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:51,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:51,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 138 transitions, 1592 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:51,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:51,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:51,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:52,344 INFO L124 PetriNetUnfolderBase]: 6396/12519 cut-off events. [2024-02-07 14:24:52,345 INFO L125 PetriNetUnfolderBase]: For 47775/47781 co-relation queries the response was YES. [2024-02-07 14:24:52,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38170 conditions, 12519 events. 6396/12519 cut-off events. For 47775/47781 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 107549 event pairs, 3091 based on Foata normal form. 8/12121 useless extension candidates. Maximal degree in co-relation 38110. Up to 9851 conditions per place. [2024-02-07 14:24:52,453 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 166 selfloop transitions, 10 changer transitions 0/189 dead transitions. [2024-02-07 14:24:52,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 189 transitions, 2218 flow [2024-02-07 14:24:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:24:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:24:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-02-07 14:24:52,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42213114754098363 [2024-02-07 14:24:52,454 INFO L175 Difference]: Start difference. First operand has 181 places, 138 transitions, 1592 flow. Second operand 8 states and 206 transitions. [2024-02-07 14:24:52,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 189 transitions, 2218 flow [2024-02-07 14:24:52,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 189 transitions, 2106 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-02-07 14:24:52,665 INFO L231 Difference]: Finished difference. Result has 184 places, 141 transitions, 1566 flow [2024-02-07 14:24:52,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1566, PETRI_PLACES=184, PETRI_TRANSITIONS=141} [2024-02-07 14:24:52,665 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 117 predicate places. [2024-02-07 14:24:52,665 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 141 transitions, 1566 flow [2024-02-07 14:24:52,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:52,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:52,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:52,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-07 14:24:52,666 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:52,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1036715828, now seen corresponding path program 17 times [2024-02-07 14:24:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760774134] [2024-02-07 14:24:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:52,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:52,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760774134] [2024-02-07 14:24:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760774134] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:52,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:24:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575199570] [2024-02-07 14:24:52,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:52,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:52,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:52,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:52,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 141 transitions, 1566 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:52,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:52,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:52,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:54,007 INFO L124 PetriNetUnfolderBase]: 6384/12464 cut-off events. [2024-02-07 14:24:54,007 INFO L125 PetriNetUnfolderBase]: For 43519/43525 co-relation queries the response was YES. [2024-02-07 14:24:54,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37493 conditions, 12464 events. 6384/12464 cut-off events. For 43519/43525 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 106969 event pairs, 3365 based on Foata normal form. 8/12039 useless extension candidates. Maximal degree in co-relation 37429. Up to 6195 conditions per place. [2024-02-07 14:24:54,110 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 171 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-02-07 14:24:54,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 228 transitions, 2376 flow [2024-02-07 14:24:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:24:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:24:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-02-07 14:24:54,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44426229508196724 [2024-02-07 14:24:54,111 INFO L175 Difference]: Start difference. First operand has 184 places, 141 transitions, 1566 flow. Second operand 10 states and 271 transitions. [2024-02-07 14:24:54,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 228 transitions, 2376 flow [2024-02-07 14:24:54,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 228 transitions, 2307 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-02-07 14:24:54,281 INFO L231 Difference]: Finished difference. Result has 191 places, 144 transitions, 1648 flow [2024-02-07 14:24:54,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1648, PETRI_PLACES=191, PETRI_TRANSITIONS=144} [2024-02-07 14:24:54,282 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 124 predicate places. [2024-02-07 14:24:54,282 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 144 transitions, 1648 flow [2024-02-07 14:24:54,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:54,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:54,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:54,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-07 14:24:54,283 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:54,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash -505786732, now seen corresponding path program 18 times [2024-02-07 14:24:54,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:54,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018380404] [2024-02-07 14:24:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018380404] [2024-02-07 14:24:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018380404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067707190] [2024-02-07 14:24:54,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:54,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:54,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:54,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:54,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:54,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:54,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 144 transitions, 1648 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:54,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:54,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:54,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:55,614 INFO L124 PetriNetUnfolderBase]: 6513/12824 cut-off events. [2024-02-07 14:24:55,614 INFO L125 PetriNetUnfolderBase]: For 47967/47973 co-relation queries the response was YES. [2024-02-07 14:24:55,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38665 conditions, 12824 events. 6513/12824 cut-off events. For 47967/47973 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 111670 event pairs, 1817 based on Foata normal form. 8/12410 useless extension candidates. Maximal degree in co-relation 38600. Up to 5331 conditions per place. [2024-02-07 14:24:55,736 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 199 selfloop transitions, 31 changer transitions 0/243 dead transitions. [2024-02-07 14:24:55,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 243 transitions, 2631 flow [2024-02-07 14:24:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:24:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:24:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 279 transitions. [2024-02-07 14:24:55,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45737704918032784 [2024-02-07 14:24:55,737 INFO L175 Difference]: Start difference. First operand has 191 places, 144 transitions, 1648 flow. Second operand 10 states and 279 transitions. [2024-02-07 14:24:55,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 243 transitions, 2631 flow [2024-02-07 14:24:55,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 243 transitions, 2527 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-02-07 14:24:55,951 INFO L231 Difference]: Finished difference. Result has 198 places, 147 transitions, 1679 flow [2024-02-07 14:24:55,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1679, PETRI_PLACES=198, PETRI_TRANSITIONS=147} [2024-02-07 14:24:55,952 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 131 predicate places. [2024-02-07 14:24:55,952 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 147 transitions, 1679 flow [2024-02-07 14:24:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:24:55,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:55,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:55,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-07 14:24:55,953 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:55,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1016914256, now seen corresponding path program 19 times [2024-02-07 14:24:55,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:55,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803250757] [2024-02-07 14:24:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:55,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803250757] [2024-02-07 14:24:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803250757] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:56,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:24:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579272812] [2024-02-07 14:24:56,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:56,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:24:56,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:56,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:24:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:24:56,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:56,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 147 transitions, 1679 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:56,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:56,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:57,337 INFO L124 PetriNetUnfolderBase]: 6489/12796 cut-off events. [2024-02-07 14:24:57,337 INFO L125 PetriNetUnfolderBase]: For 48500/48506 co-relation queries the response was YES. [2024-02-07 14:24:57,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38471 conditions, 12796 events. 6489/12796 cut-off events. For 48500/48506 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 111601 event pairs, 1773 based on Foata normal form. 16/12390 useless extension candidates. Maximal degree in co-relation 38402. Up to 6806 conditions per place. [2024-02-07 14:24:57,455 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 164 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-02-07 14:24:57,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 2449 flow [2024-02-07 14:24:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:24:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:24:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-02-07 14:24:57,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453551912568306 [2024-02-07 14:24:57,457 INFO L175 Difference]: Start difference. First operand has 198 places, 147 transitions, 1679 flow. Second operand 9 states and 249 transitions. [2024-02-07 14:24:57,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 218 transitions, 2449 flow [2024-02-07 14:24:57,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 218 transitions, 2364 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-02-07 14:24:57,678 INFO L231 Difference]: Finished difference. Result has 201 places, 147 transitions, 1681 flow [2024-02-07 14:24:57,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1681, PETRI_PLACES=201, PETRI_TRANSITIONS=147} [2024-02-07 14:24:57,679 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 134 predicate places. [2024-02-07 14:24:57,679 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 147 transitions, 1681 flow [2024-02-07 14:24:57,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:57,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:57,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:57,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-07 14:24:57,680 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:57,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 504442270, now seen corresponding path program 20 times [2024-02-07 14:24:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:57,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663061008] [2024-02-07 14:24:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:57,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:57,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:57,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663061008] [2024-02-07 14:24:57,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663061008] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:57,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:57,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:57,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086622176] [2024-02-07 14:24:57,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:57,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:57,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:57,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:57,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 147 transitions, 1681 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:57,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:57,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:57,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:59,313 INFO L124 PetriNetUnfolderBase]: 6465/12780 cut-off events. [2024-02-07 14:24:59,313 INFO L125 PetriNetUnfolderBase]: For 43806/43812 co-relation queries the response was YES. [2024-02-07 14:24:59,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38117 conditions, 12780 events. 6465/12780 cut-off events. For 43806/43812 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 111842 event pairs, 2321 based on Foata normal form. 16/12374 useless extension candidates. Maximal degree in co-relation 38048. Up to 9007 conditions per place. [2024-02-07 14:24:59,387 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 164 selfloop transitions, 36 changer transitions 0/213 dead transitions. [2024-02-07 14:24:59,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 213 transitions, 2381 flow [2024-02-07 14:24:59,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 14:24:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 14:24:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2024-02-07 14:24:59,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262295081967213 [2024-02-07 14:24:59,389 INFO L175 Difference]: Start difference. First operand has 201 places, 147 transitions, 1681 flow. Second operand 11 states and 286 transitions. [2024-02-07 14:24:59,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 213 transitions, 2381 flow [2024-02-07 14:24:59,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 213 transitions, 2174 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-02-07 14:24:59,575 INFO L231 Difference]: Finished difference. Result has 199 places, 150 transitions, 1600 flow [2024-02-07 14:24:59,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1600, PETRI_PLACES=199, PETRI_TRANSITIONS=150} [2024-02-07 14:24:59,576 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 132 predicate places. [2024-02-07 14:24:59,576 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 150 transitions, 1600 flow [2024-02-07 14:24:59,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:59,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:59,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-07 14:24:59,576 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:24:59,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:59,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1803429216, now seen corresponding path program 21 times [2024-02-07 14:24:59,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:59,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752654347] [2024-02-07 14:24:59,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:59,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:24:59,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:59,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752654347] [2024-02-07 14:24:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752654347] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:59,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:59,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:24:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457437278] [2024-02-07 14:24:59,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:59,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:24:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:24:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:24:59,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:24:59,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 150 transitions, 1600 flow. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:59,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:59,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:24:59,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:00,868 INFO L124 PetriNetUnfolderBase]: 6549/13176 cut-off events. [2024-02-07 14:25:00,868 INFO L125 PetriNetUnfolderBase]: For 33918/33924 co-relation queries the response was YES. [2024-02-07 14:25:00,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37381 conditions, 13176 events. 6549/13176 cut-off events. For 33918/33924 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 117139 event pairs, 2298 based on Foata normal form. 8/12666 useless extension candidates. Maximal degree in co-relation 37314. Up to 5331 conditions per place. [2024-02-07 14:25:00,977 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 179 selfloop transitions, 36 changer transitions 0/228 dead transitions. [2024-02-07 14:25:00,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 228 transitions, 2388 flow [2024-02-07 14:25:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:25:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:25:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-02-07 14:25:00,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672131147540984 [2024-02-07 14:25:00,978 INFO L175 Difference]: Start difference. First operand has 199 places, 150 transitions, 1600 flow. Second operand 8 states and 228 transitions. [2024-02-07 14:25:00,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 228 transitions, 2388 flow [2024-02-07 14:25:01,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 228 transitions, 2263 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-02-07 14:25:01,135 INFO L231 Difference]: Finished difference. Result has 201 places, 151 transitions, 1593 flow [2024-02-07 14:25:01,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1593, PETRI_PLACES=201, PETRI_TRANSITIONS=151} [2024-02-07 14:25:01,136 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 134 predicate places. [2024-02-07 14:25:01,136 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 151 transitions, 1593 flow [2024-02-07 14:25:01,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 14:25:01,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:01,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:01,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-07 14:25:01,136 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:01,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash 227626462, now seen corresponding path program 22 times [2024-02-07 14:25:01,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:01,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733348123] [2024-02-07 14:25:01,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:01,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:01,282 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 14:25:01,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:01,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733348123] [2024-02-07 14:25:01,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733348123] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:01,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662927450] [2024-02-07 14:25:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:01,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-07 14:25:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-07 14:25:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-02-07 14:25:01,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:25:01,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 151 transitions, 1593 flow. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 14:25:01,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:01,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:25:01,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:02,683 INFO L124 PetriNetUnfolderBase]: 6816/13681 cut-off events. [2024-02-07 14:25:02,683 INFO L125 PetriNetUnfolderBase]: For 38239/38245 co-relation queries the response was YES. [2024-02-07 14:25:02,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39149 conditions, 13681 events. 6816/13681 cut-off events. For 38239/38245 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 121972 event pairs, 2674 based on Foata normal form. 8/13155 useless extension candidates. Maximal degree in co-relation 39084. Up to 5331 conditions per place. [2024-02-07 14:25:02,788 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 175 selfloop transitions, 40 changer transitions 0/228 dead transitions. [2024-02-07 14:25:02,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 228 transitions, 2446 flow [2024-02-07 14:25:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:25:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:25:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-02-07 14:25:02,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44626593806921677 [2024-02-07 14:25:02,797 INFO L175 Difference]: Start difference. First operand has 201 places, 151 transitions, 1593 flow. Second operand 9 states and 245 transitions. [2024-02-07 14:25:02,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 228 transitions, 2446 flow [2024-02-07 14:25:02,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 228 transitions, 2338 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:02,996 INFO L231 Difference]: Finished difference. Result has 208 places, 157 transitions, 1713 flow [2024-02-07 14:25:02,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1713, PETRI_PLACES=208, PETRI_TRANSITIONS=157} [2024-02-07 14:25:02,997 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 141 predicate places. [2024-02-07 14:25:02,997 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 157 transitions, 1713 flow [2024-02-07 14:25:02,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:02,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:02,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:02,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-07 14:25:02,998 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:02,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1832817636, now seen corresponding path program 23 times [2024-02-07 14:25:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531670304] [2024-02-07 14:25:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:03,161 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 14:25:03,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:03,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531670304] [2024-02-07 14:25:03,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531670304] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:03,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:03,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644481638] [2024-02-07 14:25:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:03,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-07 14:25:03,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-07 14:25:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-07 14:25:03,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:25:03,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 157 transitions, 1713 flow. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 14:25:03,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:03,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:25:03,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:04,670 INFO L124 PetriNetUnfolderBase]: 6991/14082 cut-off events. [2024-02-07 14:25:04,670 INFO L125 PetriNetUnfolderBase]: For 37722/37728 co-relation queries the response was YES. [2024-02-07 14:25:04,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40098 conditions, 14082 events. 6991/14082 cut-off events. For 37722/37728 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 127141 event pairs, 2129 based on Foata normal form. 8/13540 useless extension candidates. Maximal degree in co-relation 40030. Up to 5331 conditions per place. [2024-02-07 14:25:04,823 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 206 selfloop transitions, 34 changer transitions 0/253 dead transitions. [2024-02-07 14:25:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 253 transitions, 2680 flow [2024-02-07 14:25:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-07 14:25:04,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-07 14:25:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-02-07 14:25:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44113263785394935 [2024-02-07 14:25:04,825 INFO L175 Difference]: Start difference. First operand has 208 places, 157 transitions, 1713 flow. Second operand 11 states and 296 transitions. [2024-02-07 14:25:04,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 253 transitions, 2680 flow [2024-02-07 14:25:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 253 transitions, 2563 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:05,049 INFO L231 Difference]: Finished difference. Result has 216 places, 160 transitions, 1752 flow [2024-02-07 14:25:05,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1752, PETRI_PLACES=216, PETRI_TRANSITIONS=160} [2024-02-07 14:25:05,050 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 149 predicate places. [2024-02-07 14:25:05,050 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 160 transitions, 1752 flow [2024-02-07 14:25:05,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 14:25:05,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:05,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:05,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-07 14:25:05,051 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:05,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:05,051 INFO L85 PathProgramCache]: Analyzing trace with hash -283378200, now seen corresponding path program 24 times [2024-02-07 14:25:05,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:05,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578838164] [2024-02-07 14:25:05,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:05,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:05,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:05,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:05,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578838164] [2024-02-07 14:25:05,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578838164] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:05,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:05,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 14:25:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651378459] [2024-02-07 14:25:05,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:05,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-07 14:25:05,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:05,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-07 14:25:05,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-07 14:25:05,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 14:25:05,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 160 transitions, 1752 flow. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 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 14:25:05,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:05,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 14:25:05,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:06,715 INFO L124 PetriNetUnfolderBase]: 6979/14068 cut-off events. [2024-02-07 14:25:06,715 INFO L125 PetriNetUnfolderBase]: For 35211/35217 co-relation queries the response was YES. [2024-02-07 14:25:06,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39774 conditions, 14068 events. 6979/14068 cut-off events. For 35211/35217 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 127179 event pairs, 2169 based on Foata normal form. 8/13526 useless extension candidates. Maximal degree in co-relation 39704. Up to 5331 conditions per place. [2024-02-07 14:25:06,819 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 186 selfloop transitions, 34 changer transitions 0/233 dead transitions. [2024-02-07 14:25:06,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 233 transitions, 2504 flow [2024-02-07 14:25:06,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:25:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:25:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-02-07 14:25:06,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43278688524590164 [2024-02-07 14:25:06,820 INFO L175 Difference]: Start difference. First operand has 216 places, 160 transitions, 1752 flow. Second operand 10 states and 264 transitions. [2024-02-07 14:25:06,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 233 transitions, 2504 flow [2024-02-07 14:25:06,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 233 transitions, 2358 flow, removed 26 selfloop flow, removed 27 redundant places. [2024-02-07 14:25:06,992 INFO L231 Difference]: Finished difference. Result has 198 places, 161 transitions, 1690 flow [2024-02-07 14:25:06,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1690, PETRI_PLACES=198, PETRI_TRANSITIONS=161} [2024-02-07 14:25:06,993 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 131 predicate places. [2024-02-07 14:25:06,993 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 161 transitions, 1690 flow [2024-02-07 14:25:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:06,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:06,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:06,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-07 14:25:06,994 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:06,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1554124676, now seen corresponding path program 1 times [2024-02-07 14:25:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:06,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921739778] [2024-02-07 14:25:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:06,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:07,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:07,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921739778] [2024-02-07 14:25:07,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921739778] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:07,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:07,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:07,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857218470] [2024-02-07 14:25:07,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:07,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:07,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:07,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:07,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:25:07,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 161 transitions, 1690 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 14:25:07,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:07,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:25:07,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:08,034 INFO L124 PetriNetUnfolderBase]: 6979/13762 cut-off events. [2024-02-07 14:25:08,034 INFO L125 PetriNetUnfolderBase]: For 31200/31242 co-relation queries the response was YES. [2024-02-07 14:25:08,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39312 conditions, 13762 events. 6979/13762 cut-off events. For 31200/31242 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 120512 event pairs, 5489 based on Foata normal form. 8/13209 useless extension candidates. Maximal degree in co-relation 39262. Up to 11300 conditions per place. [2024-02-07 14:25:08,129 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 147 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2024-02-07 14:25:08,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 160 transitions, 1984 flow [2024-02-07 14:25:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-02-07 14:25:08,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39344262295081966 [2024-02-07 14:25:08,131 INFO L175 Difference]: Start difference. First operand has 198 places, 161 transitions, 1690 flow. Second operand 3 states and 72 transitions. [2024-02-07 14:25:08,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 160 transitions, 1984 flow [2024-02-07 14:25:08,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 160 transitions, 1850 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-02-07 14:25:08,283 INFO L231 Difference]: Finished difference. Result has 192 places, 160 transitions, 1556 flow [2024-02-07 14:25:08,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1556, PETRI_PLACES=192, PETRI_TRANSITIONS=160} [2024-02-07 14:25:08,284 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 125 predicate places. [2024-02-07 14:25:08,284 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 160 transitions, 1556 flow [2024-02-07 14:25:08,284 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 14:25:08,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:08,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-07 14:25:08,285 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:08,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1409094256, now seen corresponding path program 1 times [2024-02-07 14:25:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469361721] [2024-02-07 14:25:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:08,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:08,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469361721] [2024-02-07 14:25:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469361721] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:08,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:08,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:08,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009825421] [2024-02-07 14:25:08,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:08,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:08,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:08,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:08,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:08,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 61 [2024-02-07 14:25:08,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 160 transitions, 1556 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:08,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:08,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 61 [2024-02-07 14:25:08,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:09,458 INFO L124 PetriNetUnfolderBase]: 7795/14306 cut-off events. [2024-02-07 14:25:09,458 INFO L125 PetriNetUnfolderBase]: For 26535/26577 co-relation queries the response was YES. [2024-02-07 14:25:09,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40629 conditions, 14306 events. 7795/14306 cut-off events. For 26535/26577 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 116250 event pairs, 5081 based on Foata normal form. 8/14297 useless extension candidates. Maximal degree in co-relation 40580. Up to 10620 conditions per place. [2024-02-07 14:25:09,571 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 151 selfloop transitions, 2 changer transitions 0/162 dead transitions. [2024-02-07 14:25:09,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 162 transitions, 1866 flow [2024-02-07 14:25:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-02-07 14:25:09,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3319672131147541 [2024-02-07 14:25:09,572 INFO L175 Difference]: Start difference. First operand has 192 places, 160 transitions, 1556 flow. Second operand 4 states and 81 transitions. [2024-02-07 14:25:09,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 162 transitions, 1866 flow [2024-02-07 14:25:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 162 transitions, 1849 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:09,698 INFO L231 Difference]: Finished difference. Result has 192 places, 159 transitions, 1541 flow [2024-02-07 14:25:09,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1541, PETRI_PLACES=192, PETRI_TRANSITIONS=159} [2024-02-07 14:25:09,699 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 125 predicate places. [2024-02-07 14:25:09,699 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 159 transitions, 1541 flow [2024-02-07 14:25:09,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:09,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:09,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:09,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-07 14:25:09,699 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:09,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:09,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1204260188, now seen corresponding path program 1 times [2024-02-07 14:25:09,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:09,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066237305] [2024-02-07 14:25:09,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:09,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:09,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:09,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066237305] [2024-02-07 14:25:09,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066237305] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:09,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:09,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:09,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906176135] [2024-02-07 14:25:09,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:09,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:09,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:09,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:09,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:09,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 14:25:09,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 159 transitions, 1541 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:09,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:09,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 14:25:09,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:11,014 INFO L124 PetriNetUnfolderBase]: 7039/13226 cut-off events. [2024-02-07 14:25:11,014 INFO L125 PetriNetUnfolderBase]: For 25698/25738 co-relation queries the response was YES. [2024-02-07 14:25:11,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38411 conditions, 13226 events. 7039/13226 cut-off events. For 25698/25738 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 110843 event pairs, 1539 based on Foata normal form. 240/13449 useless extension candidates. Maximal degree in co-relation 38362. Up to 5496 conditions per place. [2024-02-07 14:25:11,096 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 41 selfloop transitions, 18 changer transitions 144/213 dead transitions. [2024-02-07 14:25:11,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 213 transitions, 2171 flow [2024-02-07 14:25:11,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:25:11,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:25:11,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-02-07 14:25:11,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3989071038251366 [2024-02-07 14:25:11,098 INFO L175 Difference]: Start difference. First operand has 192 places, 159 transitions, 1541 flow. Second operand 9 states and 219 transitions. [2024-02-07 14:25:11,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 213 transitions, 2171 flow [2024-02-07 14:25:11,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 213 transitions, 2166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:11,248 INFO L231 Difference]: Finished difference. Result has 204 places, 58 transitions, 411 flow [2024-02-07 14:25:11,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=411, PETRI_PLACES=204, PETRI_TRANSITIONS=58} [2024-02-07 14:25:11,249 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 137 predicate places. [2024-02-07 14:25:11,249 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 58 transitions, 411 flow [2024-02-07 14:25:11,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:11,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:11,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-07 14:25:11,250 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:11,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1655629380, now seen corresponding path program 2 times [2024-02-07 14:25:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650787280] [2024-02-07 14:25:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:11,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650787280] [2024-02-07 14:25:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650787280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:11,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-07 14:25:11,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290857228] [2024-02-07 14:25:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 14:25:11,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 14:25:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 14:25:11,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-02-07 14:25:11,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 58 transitions, 411 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:11,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-02-07 14:25:11,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:11,671 INFO L124 PetriNetUnfolderBase]: 1038/1923 cut-off events. [2024-02-07 14:25:11,671 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-02-07 14:25:11,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 1923 events. 1038/1923 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10934 event pairs, 345 based on Foata normal form. 8/1909 useless extension candidates. Maximal degree in co-relation 5692. Up to 1118 conditions per place. [2024-02-07 14:25:11,681 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 46 selfloop transitions, 11 changer transitions 39/105 dead transitions. [2024-02-07 14:25:11,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 105 transitions, 768 flow [2024-02-07 14:25:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 14:25:11,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 14:25:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-02-07 14:25:11,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38934426229508196 [2024-02-07 14:25:11,682 INFO L175 Difference]: Start difference. First operand has 204 places, 58 transitions, 411 flow. Second operand 8 states and 190 transitions. [2024-02-07 14:25:11,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 105 transitions, 768 flow [2024-02-07 14:25:11,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 105 transitions, 567 flow, removed 18 selfloop flow, removed 38 redundant places. [2024-02-07 14:25:11,691 INFO L231 Difference]: Finished difference. Result has 108 places, 52 transitions, 224 flow [2024-02-07 14:25:11,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=108, PETRI_TRANSITIONS=52} [2024-02-07 14:25:11,692 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 41 predicate places. [2024-02-07 14:25:11,692 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 52 transitions, 224 flow [2024-02-07 14:25:11,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:11,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:11,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-07 14:25:11,693 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 14:25:11,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1900375710, now seen corresponding path program 3 times [2024-02-07 14:25:11,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:11,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401616917] [2024-02-07 14:25:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:11,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:11,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401616917] [2024-02-07 14:25:11,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401616917] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:11,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:11,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 14:25:11,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225874755] [2024-02-07 14:25:11,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:11,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 14:25:11,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 14:25:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-07 14:25:11,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-02-07 14:25:11,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 52 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:11,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-02-07 14:25:11,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:11,952 INFO L124 PetriNetUnfolderBase]: 748/1412 cut-off events. [2024-02-07 14:25:11,953 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-02-07 14:25:11,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 1412 events. 748/1412 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7722 event pairs, 196 based on Foata normal form. 32/1441 useless extension candidates. Maximal degree in co-relation 3645. Up to 1004 conditions per place. [2024-02-07 14:25:11,958 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2024-02-07 14:25:11,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 63 transitions, 362 flow [2024-02-07 14:25:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:25:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:25:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-02-07 14:25:11,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34972677595628415 [2024-02-07 14:25:11,961 INFO L175 Difference]: Start difference. First operand has 108 places, 52 transitions, 224 flow. Second operand 6 states and 128 transitions. [2024-02-07 14:25:11,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 63 transitions, 362 flow [2024-02-07 14:25:11,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 63 transitions, 340 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-07 14:25:11,963 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2024-02-07 14:25:11,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2024-02-07 14:25:11,964 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-02-07 14:25:11,965 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2024-02-07 14:25:11,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:25:11,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 41 remaining) [2024-02-07 14:25:11,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 41 remaining) [2024-02-07 14:25:11,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 41 remaining) [2024-02-07 14:25:11,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 41 remaining) [2024-02-07 14:25:11,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 41 remaining) [2024-02-07 14:25:11,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 41 remaining) [2024-02-07 14:25:11,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 41 remaining) [2024-02-07 14:25:11,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 41 remaining) [2024-02-07 14:25:11,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 41 remaining) [2024-02-07 14:25:11,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 41 remaining) [2024-02-07 14:25:11,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 41 remaining) [2024-02-07 14:25:11,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 41 remaining) [2024-02-07 14:25:11,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 41 remaining) [2024-02-07 14:25:11,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 41 remaining) [2024-02-07 14:25:11,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 41 remaining) [2024-02-07 14:25:11,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 41 remaining) [2024-02-07 14:25:11,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 41 remaining) [2024-02-07 14:25:11,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 41 remaining) [2024-02-07 14:25:11,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 41 remaining) [2024-02-07 14:25:11,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 41 remaining) [2024-02-07 14:25:11,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 41 remaining) [2024-02-07 14:25:11,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 41 remaining) [2024-02-07 14:25:11,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (18 of 41 remaining) [2024-02-07 14:25:11,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2024-02-07 14:25:11,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2024-02-07 14:25:11,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 41 remaining) [2024-02-07 14:25:11,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 41 remaining) [2024-02-07 14:25:11,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 41 remaining) [2024-02-07 14:25:11,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 41 remaining) [2024-02-07 14:25:11,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 41 remaining) [2024-02-07 14:25:11,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 41 remaining) [2024-02-07 14:25:11,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 41 remaining) [2024-02-07 14:25:11,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 41 remaining) [2024-02-07 14:25:11,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 41 remaining) [2024-02-07 14:25:11,974 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 41 remaining) [2024-02-07 14:25:11,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-07 14:25:11,974 INFO L445 BasicCegarLoop]: Path program histogram: [24, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:11,980 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:25:11,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:25:11,984 INFO L503 ceAbstractionStarter]: Automizer considered 22 witness invariants [2024-02-07 14:25:11,984 INFO L504 ceAbstractionStarter]: WitnessConsidered=22 [2024-02-07 14:25:11,988 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:25:11 BasicIcfg [2024-02-07 14:25:11,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:25:11,989 INFO L158 Benchmark]: Toolchain (without parser) took 46787.30ms. Allocated memory was 138.4MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 60.5MB in the beginning and 2.4GB in the end (delta: -2.4GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-02-07 14:25:11,989 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 138.4MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:11,991 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:11,992 INFO L158 Benchmark]: CACSL2BoogieTranslator took 666.71ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 60.3MB in the beginning and 124.9MB in the end (delta: -64.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-02-07 14:25:11,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.37ms. Allocated memory is still 172.0MB. Free memory was 124.9MB in the beginning and 122.7MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:11,992 INFO L158 Benchmark]: Boogie Preprocessor took 70.07ms. Allocated memory is still 172.0MB. Free memory was 122.7MB in the beginning and 119.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:25:11,993 INFO L158 Benchmark]: RCFGBuilder took 574.59ms. Allocated memory is still 172.0MB. Free memory was 119.6MB in the beginning and 84.0MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-02-07 14:25:11,993 INFO L158 Benchmark]: TraceAbstraction took 45391.96ms. Allocated memory was 172.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 84.0MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 990.7MB. Max. memory is 16.1GB. [2024-02-07 14:25:11,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 138.4MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 666.71ms. Allocated memory was 138.4MB in the beginning and 172.0MB in the end (delta: 33.6MB). Free memory was 60.3MB in the beginning and 124.9MB in the end (delta: -64.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.37ms. Allocated memory is still 172.0MB. Free memory was 124.9MB in the beginning and 122.7MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 70.07ms. Allocated memory is still 172.0MB. Free memory was 122.7MB in the beginning and 119.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 574.59ms. Allocated memory is still 172.0MB. Free memory was 119.6MB in the beginning and 84.0MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 45391.96ms. Allocated memory was 172.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 84.0MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 990.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 725]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 726]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 728]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 729]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 733]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 734]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 741]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 744]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 748]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 749]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 755]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 756]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 759]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 785]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 786]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 787]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 791]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 792]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 100 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.2s, OverallIterations: 43, TraceHistogramMax: 1, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 39.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2745 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2718 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 100 mSDsCounter, 111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7930 IncrementalHoareTripleChecker+Invalid, 8041 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 111 mSolverCounterUnsat, 8 mSDtfsCounter, 7930 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 346 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 315 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1752occurred in iteration=37, InterpolantAutomatonStates: 313, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 948 NumberOfCodeBlocks, 948 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 6460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 23 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:25:12,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE