./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe015_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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe015_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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:03:56,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:03:56,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:03:56,338 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:03:56,339 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:03:56,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:03:56,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:03:56,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:03:56,359 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:03:56,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:03:56,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:03:56,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:03:56,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:03:56,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:03:56,361 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:03:56,362 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:03:56,362 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:03:56,362 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:03:56,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:03:56,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:03:56,363 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:03:56,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:03:56,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:03:56,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:03:56,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:03:56,366 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:03:56,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:03:56,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:03:56,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:03:56,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:03:56,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:03:56,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:03:56,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:03:56,370 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:03:56,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:03:56,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:03:56,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:03:56,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:03:56,371 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:03:56,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:03:56,371 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:03:56,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:03:56,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:03:56,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:03:56,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:03:56,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:03:56,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:03:56,652 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:03:56,653 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:03:56,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:03:57,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:03:58,090 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:03:58,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:03:58,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1003818f3/f740241c56d54202b4e224e68928f4da/FLAG969c90059 [2024-02-07 19:03:58,134 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1003818f3/f740241c56d54202b4e224e68928f4da [2024-02-07 19:03:58,137 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:03:58,138 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:03:58,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 19:03:58,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:03:58,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:03:58,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:03:58,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:03:58,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:03:58,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:03:58" (1/2) ... [2024-02-07 19:03:58,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dca0a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:03:58, skipping insertion in model container [2024-02-07 19:03:58,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:03:58" (1/2) ... [2024-02-07 19:03:58,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d6ed408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:03:58, skipping insertion in model container [2024-02-07 19:03:58,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:03:58" (2/2) ... [2024-02-07 19:03:58,339 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dca0a5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:58, skipping insertion in model container [2024-02-07 19:03:58,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:03:58" (2/2) ... [2024-02-07 19:03:58,340 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:03:58,420 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:03:58,422 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] 1 <= __unbuffered_cnt [2024-02-07 19:03:58,422 INFO L76 edCorrectnessWitness]: Location invariant before [L786-L786] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:03:58,422 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 19:03:58,422 INFO L76 edCorrectnessWitness]: Location invariant before [L749-L749] 1 <= __unbuffered_cnt [2024-02-07 19:03:58,422 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] x == 2 [2024-02-07 19:03:58,423 INFO L76 edCorrectnessWitness]: Location invariant before [L728-L728] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 19:03:58,423 INFO L76 edCorrectnessWitness]: Location invariant before [L729-L729] (((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 2)) && (__unbuffered_p0_EAX <= 127)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2) [2024-02-07 19:03:58,423 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] 0 <= __unbuffered_cnt [2024-02-07 19:03:58,424 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:03:58,424 INFO L76 edCorrectnessWitness]: Location invariant before [L759-L759] y == 1 [2024-02-07 19:03:58,424 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 19:03:58,424 INFO L76 edCorrectnessWitness]: Location invariant before [L791-L791] (((((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 2)) && (__unbuffered_p2_EAX <= 127)) && (x == 2)) && ((y == 2 && (__unbuffered_p0_EAX == 0 || (((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)))) || (((((((0 <= __unbuffered_p0_EAX && 0 <= y) && __unbuffered_p0_EAX <= 2) && __unbuffered_p0_EAX <= 127) && y <= 2) && y <= 127) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2) [2024-02-07 19:03:58,424 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] 1 <= __unbuffered_cnt [2024-02-07 19:03:58,424 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:03:58,425 INFO L76 edCorrectnessWitness]: Location invariant before [L763-L763] 0 <= __unbuffered_cnt [2024-02-07 19:03:58,425 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] 0 <= __unbuffered_cnt [2024-02-07 19:03:58,425 INFO L76 edCorrectnessWitness]: Location invariant before [L792-L792] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:03:58,425 INFO L76 edCorrectnessWitness]: Location invariant before [L741-L741] x == 1 [2024-02-07 19:03:58,425 INFO L76 edCorrectnessWitness]: Location invariant before [L785-L785] 0 <= __unbuffered_cnt [2024-02-07 19:03:58,425 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] y == 2 [2024-02-07 19:03:58,425 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 19:03:58,475 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:03:58,663 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-02-07 19:03:58,847 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:03:58,860 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:03:58,901 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/safe015_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 [2024-02-07 19:03:58,958 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:03:58,992 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:03:58,992 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:58 WrapperNode [2024-02-07 19:03:58,992 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:03:58,993 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:03:58,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:03:58,994 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:03:59,000 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,012 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,034 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2024-02-07 19:03:59,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:03:59,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:03:59,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:03:59,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:03:59,045 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,045 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,049 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,063 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 19:03:59,068 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,069 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,084 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,086 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,088 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,089 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:03:59,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:03:59,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:03:59,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:03:59,093 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 07:03:58" (1/1) ... [2024-02-07 19:03:59,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:03:59,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:03:59,142 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 19:03:59,145 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 19:03:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:03:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:03:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:03:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:03:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:03:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:03:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:03:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:03:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 19:03:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 19:03:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 19:03:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 19:03:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 19:03:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 19:03:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:03:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:03:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:03:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:03:59,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:03:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:03:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:03:59,177 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 19:03:59,304 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:03:59,306 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:03:59,586 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:03:59,586 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:03:59,762 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:03:59,763 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:03:59,764 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:03:59 BoogieIcfgContainer [2024-02-07 19:03:59,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:03:59,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:03:59,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:03:59,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:03:59,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:03:58" (1/4) ... [2024-02-07 19:03:59,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139be98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:03:59, skipping insertion in model container [2024-02-07 19:03:59,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:03:58" (2/4) ... [2024-02-07 19:03:59,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139be98f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:03:59, skipping insertion in model container [2024-02-07 19:03:59,772 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 07:03:58" (3/4) ... [2024-02-07 19:03:59,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139be98f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:03:59, skipping insertion in model container [2024-02-07 19:03:59,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:03:59" (4/4) ... [2024-02-07 19:03:59,775 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 19:03:59,792 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:03:59,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-02-07 19:03:59,792 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:03:59,840 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:03:59,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 19:03:59,923 INFO L124 PetriNetUnfolderBase]: 1/58 cut-off events. [2024-02-07 19:03:59,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:03:59,928 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 10. Compared 188 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-02-07 19:03:59,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 61 transitions, 134 flow [2024-02-07 19:03:59,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2024-02-07 19:03:59,947 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:03:59,956 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;@571eda0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:03:59,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-02-07 19:03:59,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:03:59,964 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 19:03:59,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:03:59,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:59,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:03:59,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:03:59,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash 9488200, now seen corresponding path program 1 times [2024-02-07 19:03:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:59,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372122166] [2024-02-07 19:03:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:59,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:00,181 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 19:04:00,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:00,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372122166] [2024-02-07 19:04:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372122166] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:00,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321533951] [2024-02-07 19:04:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 19:04:00,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 19:04:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 19:04:00,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:00,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:00,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:00,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:00,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:01,583 INFO L124 PetriNetUnfolderBase]: 6602/11438 cut-off events. [2024-02-07 19:04:01,583 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-07 19:04:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20890 conditions, 11438 events. 6602/11438 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 91240 event pairs, 6602 based on Foata normal form. 294/8394 useless extension candidates. Maximal degree in co-relation 20879. Up to 9348 conditions per place. [2024-02-07 19:04:01,691 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 31 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-02-07 19:04:01,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 163 flow [2024-02-07 19:04:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 19:04:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 19:04:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 79 transitions. [2024-02-07 19:04:01,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2024-02-07 19:04:01,707 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 2 states and 79 transitions. [2024-02-07 19:04:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 163 flow [2024-02-07 19:04:01,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:01,719 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 98 flow [2024-02-07 19:04:01,721 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=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-02-07 19:04:01,725 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-02-07 19:04:01,726 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 98 flow [2024-02-07 19:04:01,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:01,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:01,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:04:01,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:04:01,727 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 528236522, now seen corresponding path program 1 times [2024-02-07 19:04:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109683096] [2024-02-07 19:04:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:01,892 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 19:04:01,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:01,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109683096] [2024-02-07 19:04:01,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109683096] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:01,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:01,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:01,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188743232] [2024-02-07 19:04:01,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:01,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:01,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:01,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:01,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:01,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 98 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 19:04:01,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:01,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:01,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:02,804 INFO L124 PetriNetUnfolderBase]: 5988/10270 cut-off events. [2024-02-07 19:04:02,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:02,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18873 conditions, 10270 events. 5988/10270 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 79017 event pairs, 1493 based on Foata normal form. 0/7426 useless extension candidates. Maximal degree in co-relation 18870. Up to 7919 conditions per place. [2024-02-07 19:04:02,885 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 46 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-02-07 19:04:02,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 230 flow [2024-02-07 19:04:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 19:04:02,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-02-07 19:04:02,889 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 98 flow. Second operand 3 states and 105 transitions. [2024-02-07 19:04:02,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 230 flow [2024-02-07 19:04:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:02,892 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 110 flow [2024-02-07 19:04:02,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=98, 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=110, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 19:04:02,893 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-02-07 19:04:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 110 flow [2024-02-07 19:04:02,894 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 19:04:02,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:02,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:02,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:04:02,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:02,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash -488251105, now seen corresponding path program 1 times [2024-02-07 19:04:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:02,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135391461] [2024-02-07 19:04:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:02,991 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 19:04:02,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:02,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135391461] [2024-02-07 19:04:02,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135391461] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:02,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:02,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512804379] [2024-02-07 19:04:02,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:02,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:02,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:02,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:02,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 110 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 19:04:02,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:02,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:02,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:03,574 INFO L124 PetriNetUnfolderBase]: 4594/6939 cut-off events. [2024-02-07 19:04:03,574 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-02-07 19:04:03,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14693 conditions, 6939 events. 4594/6939 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 42482 event pairs, 1506 based on Foata normal form. 0/6039 useless extension candidates. Maximal degree in co-relation 14688. Up to 5682 conditions per place. [2024-02-07 19:04:03,631 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 49 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-02-07 19:04:03,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 273 flow [2024-02-07 19:04:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:03,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-02-07 19:04:03,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065573770491803 [2024-02-07 19:04:03,634 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 110 flow. Second operand 3 states and 111 transitions. [2024-02-07 19:04:03,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 273 flow [2024-02-07 19:04:03,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:03,636 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 138 flow [2024-02-07 19:04:03,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, 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=138, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-02-07 19:04:03,637 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 19:04:03,637 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 138 flow [2024-02-07 19:04:03,638 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 19:04:03,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:03,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:04:03,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:03,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 2044085291, now seen corresponding path program 1 times [2024-02-07 19:04:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:03,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096370106] [2024-02-07 19:04:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:03,694 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 19:04:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096370106] [2024-02-07 19:04:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096370106] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98114711] [2024-02-07 19:04:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:03,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 19:04:03,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 138 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 19:04:03,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:03,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 19:04:03,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:04,367 INFO L124 PetriNetUnfolderBase]: 4594/7870 cut-off events. [2024-02-07 19:04:04,367 INFO L125 PetriNetUnfolderBase]: For 1527/1527 co-relation queries the response was YES. [2024-02-07 19:04:04,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17460 conditions, 7870 events. 4594/7870 cut-off events. For 1527/1527 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 58410 event pairs, 4308 based on Foata normal form. 0/6682 useless extension candidates. Maximal degree in co-relation 17454. Up to 6622 conditions per place. [2024-02-07 19:04:04,434 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 33 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2024-02-07 19:04:04,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 204 flow [2024-02-07 19:04:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-02-07 19:04:04,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453551912568306 [2024-02-07 19:04:04,437 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 138 flow. Second operand 3 states and 83 transitions. [2024-02-07 19:04:04,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 204 flow [2024-02-07 19:04:04,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:04,439 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 134 flow [2024-02-07 19:04:04,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=134, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-02-07 19:04:04,440 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 19:04:04,440 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 134 flow [2024-02-07 19:04:04,441 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 19:04:04,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:04,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:04,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:04:04,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:04,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash 856752989, now seen corresponding path program 1 times [2024-02-07 19:04:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:04,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742603237] [2024-02-07 19:04:04,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:04,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:04,487 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 19:04:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742603237] [2024-02-07 19:04:04,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742603237] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:04,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:04,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:04,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232321300] [2024-02-07 19:04:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:04,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:04,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:04,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:04,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:04,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:04,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:05,106 INFO L124 PetriNetUnfolderBase]: 4118/6957 cut-off events. [2024-02-07 19:04:05,106 INFO L125 PetriNetUnfolderBase]: For 1365/1365 co-relation queries the response was YES. [2024-02-07 19:04:05,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 6957 events. 4118/6957 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 49836 event pairs, 3438 based on Foata normal form. 85/5989 useless extension candidates. Maximal degree in co-relation 15377. Up to 5379 conditions per place. [2024-02-07 19:04:05,145 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 51 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-02-07 19:04:05,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 294 flow [2024-02-07 19:04:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 19:04:05,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-02-07 19:04:05,150 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 134 flow. Second operand 3 states and 105 transitions. [2024-02-07 19:04:05,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 294 flow [2024-02-07 19:04:05,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:05,153 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 145 flow [2024-02-07 19:04:05,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2024-02-07 19:04:05,155 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2024-02-07 19:04:05,155 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 145 flow [2024-02-07 19:04:05,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:05,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:05,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:05,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:04:05,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:05,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:05,157 INFO L85 PathProgramCache]: Analyzing trace with hash -83642123, now seen corresponding path program 1 times [2024-02-07 19:04:05,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:05,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867413835] [2024-02-07 19:04:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:05,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:05,207 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 19:04:05,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:05,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867413835] [2024-02-07 19:04:05,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867413835] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:05,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:05,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985703670] [2024-02-07 19:04:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:05,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:05,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:05,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 145 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 19:04:05,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:05,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:05,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:05,619 INFO L124 PetriNetUnfolderBase]: 3252/5605 cut-off events. [2024-02-07 19:04:05,620 INFO L125 PetriNetUnfolderBase]: For 2486/2508 co-relation queries the response was YES. [2024-02-07 19:04:05,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12751 conditions, 5605 events. 3252/5605 cut-off events. For 2486/2508 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 38481 event pairs, 1334 based on Foata normal form. 361/5173 useless extension candidates. Maximal degree in co-relation 12744. Up to 3712 conditions per place. [2024-02-07 19:04:05,663 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 50 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-02-07 19:04:05,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 289 flow [2024-02-07 19:04:05,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-02-07 19:04:05,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5573770491803278 [2024-02-07 19:04:05,665 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 145 flow. Second operand 3 states and 102 transitions. [2024-02-07 19:04:05,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 289 flow [2024-02-07 19:04:05,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 285 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:05,669 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 131 flow [2024-02-07 19:04:05,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, 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=131, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-02-07 19:04:05,670 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 19:04:05,670 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 131 flow [2024-02-07 19:04:05,670 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 19:04:05,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:05,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:04:05,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:05,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1565921107, now seen corresponding path program 1 times [2024-02-07 19:04:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437924239] [2024-02-07 19:04:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:05,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437924239] [2024-02-07 19:04:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437924239] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:05,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:05,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:04:05,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636709631] [2024-02-07 19:04:05,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:05,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:05,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 19:04:05,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:05,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:05,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 19:04:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:06,271 INFO L124 PetriNetUnfolderBase]: 3205/5630 cut-off events. [2024-02-07 19:04:06,272 INFO L125 PetriNetUnfolderBase]: For 1253/1253 co-relation queries the response was YES. [2024-02-07 19:04:06,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12634 conditions, 5630 events. 3205/5630 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 39526 event pairs, 597 based on Foata normal form. 179/4989 useless extension candidates. Maximal degree in co-relation 12627. Up to 2593 conditions per place. [2024-02-07 19:04:06,302 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 54 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-02-07 19:04:06,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 329 flow [2024-02-07 19:04:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-02-07 19:04:06,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286885245901639 [2024-02-07 19:04:06,304 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 131 flow. Second operand 4 states and 129 transitions. [2024-02-07 19:04:06,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 329 flow [2024-02-07 19:04:06,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 73 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:06,310 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 156 flow [2024-02-07 19:04:06,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-02-07 19:04:06,312 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -5 predicate places. [2024-02-07 19:04:06,312 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 156 flow [2024-02-07 19:04:06,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:06,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:06,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:06,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:04:06,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:06,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:06,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1227391660, now seen corresponding path program 1 times [2024-02-07 19:04:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058563248] [2024-02-07 19:04:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:06,350 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 19:04:06,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058563248] [2024-02-07 19:04:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058563248] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:06,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:06,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:06,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298405405] [2024-02-07 19:04:06,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:06,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:06,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:06,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:06,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:06,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:06,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:06,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:06,601 INFO L124 PetriNetUnfolderBase]: 1852/3269 cut-off events. [2024-02-07 19:04:06,601 INFO L125 PetriNetUnfolderBase]: For 1448/1448 co-relation queries the response was YES. [2024-02-07 19:04:06,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 3269 events. 1852/3269 cut-off events. For 1448/1448 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 20521 event pairs, 792 based on Foata normal form. 98/3223 useless extension candidates. Maximal degree in co-relation 7765. Up to 2510 conditions per place. [2024-02-07 19:04:06,624 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 35 selfloop transitions, 3 changer transitions 2/54 dead transitions. [2024-02-07 19:04:06,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 250 flow [2024-02-07 19:04:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:06,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-02-07 19:04:06,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5355191256830601 [2024-02-07 19:04:06,626 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 156 flow. Second operand 3 states and 98 transitions. [2024-02-07 19:04:06,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 250 flow [2024-02-07 19:04:06,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:06,631 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 134 flow [2024-02-07 19:04:06,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2024-02-07 19:04:06,633 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2024-02-07 19:04:06,633 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 134 flow [2024-02-07 19:04:06,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:06,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:06,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:06,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:04:06,634 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:06,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:06,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2126256474, now seen corresponding path program 1 times [2024-02-07 19:04:06,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:06,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683240046] [2024-02-07 19:04:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:06,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:06,753 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 19:04:06,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:06,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683240046] [2024-02-07 19:04:06,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683240046] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:06,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:06,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:06,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620116513] [2024-02-07 19:04:06,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:06,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:06,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:06,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:06,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:06,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:06,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:06,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:06,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:06,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:06,970 INFO L124 PetriNetUnfolderBase]: 1502/2757 cut-off events. [2024-02-07 19:04:06,971 INFO L125 PetriNetUnfolderBase]: For 1130/1130 co-relation queries the response was YES. [2024-02-07 19:04:06,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6417 conditions, 2757 events. 1502/2757 cut-off events. For 1130/1130 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17370 event pairs, 871 based on Foata normal form. 2/2634 useless extension candidates. Maximal degree in co-relation 6408. Up to 2191 conditions per place. [2024-02-07 19:04:06,990 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 41 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-02-07 19:04:06,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 295 flow [2024-02-07 19:04:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-02-07 19:04:06,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47950819672131145 [2024-02-07 19:04:06,992 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 134 flow. Second operand 4 states and 117 transitions. [2024-02-07 19:04:06,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 295 flow [2024-02-07 19:04:06,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 272 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:06,997 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 158 flow [2024-02-07 19:04:06,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-02-07 19:04:06,998 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-02-07 19:04:06,998 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 158 flow [2024-02-07 19:04:06,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:06,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:06,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:06,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:04:06,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:06,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash 240219374, now seen corresponding path program 1 times [2024-02-07 19:04:07,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:07,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672190016] [2024-02-07 19:04:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:07,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:07,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:07,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672190016] [2024-02-07 19:04:07,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672190016] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:07,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:07,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:07,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8382337] [2024-02-07 19:04:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:07,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:07,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:07,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 19:04:07,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:07,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:07,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 19:04:07,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:07,330 INFO L124 PetriNetUnfolderBase]: 1127/2045 cut-off events. [2024-02-07 19:04:07,330 INFO L125 PetriNetUnfolderBase]: For 801/803 co-relation queries the response was YES. [2024-02-07 19:04:07,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4967 conditions, 2045 events. 1127/2045 cut-off events. For 801/803 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11575 event pairs, 129 based on Foata normal form. 98/2067 useless extension candidates. Maximal degree in co-relation 4958. Up to 593 conditions per place. [2024-02-07 19:04:07,343 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 64 selfloop transitions, 8 changer transitions 1/87 dead transitions. [2024-02-07 19:04:07,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 87 transitions, 441 flow [2024-02-07 19:04:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-02-07 19:04:07,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016393442622951 [2024-02-07 19:04:07,345 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 158 flow. Second operand 5 states and 153 transitions. [2024-02-07 19:04:07,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 87 transitions, 441 flow [2024-02-07 19:04:07,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 434 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:07,349 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 201 flow [2024-02-07 19:04:07,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2024-02-07 19:04:07,349 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-02-07 19:04:07,350 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 201 flow [2024-02-07 19:04:07,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:07,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:07,350 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 19:04:07,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:04:07,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:07,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:07,351 INFO L85 PathProgramCache]: Analyzing trace with hash -333742899, now seen corresponding path program 1 times [2024-02-07 19:04:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:07,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575343067] [2024-02-07 19:04:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:07,540 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 19:04:07,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:07,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575343067] [2024-02-07 19:04:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575343067] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:07,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850286712] [2024-02-07 19:04:07,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:07,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:07,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:07,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:07,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:07,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:07,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:07,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:07,784 INFO L124 PetriNetUnfolderBase]: 1169/2226 cut-off events. [2024-02-07 19:04:07,784 INFO L125 PetriNetUnfolderBase]: For 1826/1828 co-relation queries the response was YES. [2024-02-07 19:04:07,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5731 conditions, 2226 events. 1169/2226 cut-off events. For 1826/1828 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13331 event pairs, 369 based on Foata normal form. 10/2146 useless extension candidates. Maximal degree in co-relation 5720. Up to 1124 conditions per place. [2024-02-07 19:04:07,798 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 79 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2024-02-07 19:04:07,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 105 transitions, 638 flow [2024-02-07 19:04:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-02-07 19:04:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 19:04:07,800 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 201 flow. Second operand 6 states and 183 transitions. [2024-02-07 19:04:07,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 105 transitions, 638 flow [2024-02-07 19:04:07,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 105 transitions, 569 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:07,806 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 262 flow [2024-02-07 19:04:07,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-02-07 19:04:07,806 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-02-07 19:04:07,807 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 262 flow [2024-02-07 19:04:07,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:07,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:07,807 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 19:04:07,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 19:04:07,808 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:07,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1983027607, now seen corresponding path program 2 times [2024-02-07 19:04:07,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:07,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704323489] [2024-02-07 19:04:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:07,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:07,976 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 19:04:07,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:07,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704323489] [2024-02-07 19:04:07,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704323489] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:07,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:07,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:07,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993204923] [2024-02-07 19:04:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:07,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:07,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:07,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:07,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:07,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:07,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:07,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:08,331 INFO L124 PetriNetUnfolderBase]: 1569/2957 cut-off events. [2024-02-07 19:04:08,331 INFO L125 PetriNetUnfolderBase]: For 2830/2830 co-relation queries the response was YES. [2024-02-07 19:04:08,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8327 conditions, 2957 events. 1569/2957 cut-off events. For 2830/2830 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 18781 event pairs, 534 based on Foata normal form. 8/2844 useless extension candidates. Maximal degree in co-relation 8313. Up to 1246 conditions per place. [2024-02-07 19:04:08,351 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 101 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2024-02-07 19:04:08,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 145 transitions, 926 flow [2024-02-07 19:04:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 263 transitions. [2024-02-07 19:04:08,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790528233151184 [2024-02-07 19:04:08,354 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 262 flow. Second operand 9 states and 263 transitions. [2024-02-07 19:04:08,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 145 transitions, 926 flow [2024-02-07 19:04:08,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 145 transitions, 892 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:08,361 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 469 flow [2024-02-07 19:04:08,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=469, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-02-07 19:04:08,362 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 14 predicate places. [2024-02-07 19:04:08,362 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 469 flow [2024-02-07 19:04:08,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:08,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:08,363 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 19:04:08,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 19:04:08,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:08,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash -40255199, now seen corresponding path program 3 times [2024-02-07 19:04:08,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:08,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380111309] [2024-02-07 19:04:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:08,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:08,532 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 19:04:08,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:08,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380111309] [2024-02-07 19:04:08,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380111309] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:08,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:08,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56394159] [2024-02-07 19:04:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:08,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:08,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:08,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 469 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:08,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:08,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:08,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:08,894 INFO L124 PetriNetUnfolderBase]: 1577/3008 cut-off events. [2024-02-07 19:04:08,894 INFO L125 PetriNetUnfolderBase]: For 5116/5116 co-relation queries the response was YES. [2024-02-07 19:04:08,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9290 conditions, 3008 events. 1577/3008 cut-off events. For 5116/5116 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19235 event pairs, 481 based on Foata normal form. 8/2886 useless extension candidates. Maximal degree in co-relation 9271. Up to 1250 conditions per place. [2024-02-07 19:04:08,919 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 94 selfloop transitions, 28 changer transitions 0/136 dead transitions. [2024-02-07 19:04:08,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 136 transitions, 988 flow [2024-02-07 19:04:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:04:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:04:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-02-07 19:04:08,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47950819672131145 [2024-02-07 19:04:08,921 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 469 flow. Second operand 8 states and 234 transitions. [2024-02-07 19:04:08,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 136 transitions, 988 flow [2024-02-07 19:04:08,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 966 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:08,934 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 529 flow [2024-02-07 19:04:08,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-02-07 19:04:08,935 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2024-02-07 19:04:08,936 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 529 flow [2024-02-07 19:04:08,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:08,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:08,936 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 19:04:08,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 19:04:08,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:08,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:08,937 INFO L85 PathProgramCache]: Analyzing trace with hash 421957001, now seen corresponding path program 4 times [2024-02-07 19:04:08,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:08,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810038778] [2024-02-07 19:04:08,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:08,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:09,078 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 19:04:09,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:09,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810038778] [2024-02-07 19:04:09,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810038778] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:09,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:09,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769529643] [2024-02-07 19:04:09,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:09,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:09,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:09,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:09,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:09,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 529 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:09,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:09,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:09,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:09,618 INFO L124 PetriNetUnfolderBase]: 2476/4832 cut-off events. [2024-02-07 19:04:09,618 INFO L125 PetriNetUnfolderBase]: For 8479/8479 co-relation queries the response was YES. [2024-02-07 19:04:09,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14608 conditions, 4832 events. 2476/4832 cut-off events. For 8479/8479 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 35095 event pairs, 654 based on Foata normal form. 28/4631 useless extension candidates. Maximal degree in co-relation 14587. Up to 1946 conditions per place. [2024-02-07 19:04:09,655 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 125 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2024-02-07 19:04:09,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 161 transitions, 1278 flow [2024-02-07 19:04:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:09,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-02-07 19:04:09,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5273224043715847 [2024-02-07 19:04:09,657 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 529 flow. Second operand 6 states and 193 transitions. [2024-02-07 19:04:09,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 161 transitions, 1278 flow [2024-02-07 19:04:09,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1232 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:09,676 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 674 flow [2024-02-07 19:04:09,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-02-07 19:04:09,677 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 26 predicate places. [2024-02-07 19:04:09,677 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 674 flow [2024-02-07 19:04:09,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:09,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:09,678 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 19:04:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 19:04:09,678 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:09,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1545519337, now seen corresponding path program 5 times [2024-02-07 19:04:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740418533] [2024-02-07 19:04:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:09,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:09,825 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 19:04:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740418533] [2024-02-07 19:04:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740418533] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:09,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:09,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:09,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943737493] [2024-02-07 19:04:09,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:09,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:09,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:09,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:09,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:09,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:09,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:09,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:10,497 INFO L124 PetriNetUnfolderBase]: 2934/5846 cut-off events. [2024-02-07 19:04:10,497 INFO L125 PetriNetUnfolderBase]: For 12598/12600 co-relation queries the response was YES. [2024-02-07 19:04:10,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18052 conditions, 5846 events. 2934/5846 cut-off events. For 12598/12600 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 44616 event pairs, 701 based on Foata normal form. 30/5577 useless extension candidates. Maximal degree in co-relation 18028. Up to 1986 conditions per place. [2024-02-07 19:04:10,544 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 142 selfloop transitions, 33 changer transitions 0/189 dead transitions. [2024-02-07 19:04:10,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 189 transitions, 1609 flow [2024-02-07 19:04:10,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:10,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-07 19:04:10,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522248243559719 [2024-02-07 19:04:10,547 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 674 flow. Second operand 7 states and 223 transitions. [2024-02-07 19:04:10,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 189 transitions, 1609 flow [2024-02-07 19:04:10,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 189 transitions, 1583 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:10,573 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 920 flow [2024-02-07 19:04:10,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=920, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-02-07 19:04:10,574 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-02-07 19:04:10,574 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 920 flow [2024-02-07 19:04:10,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:10,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:10,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:10,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 19:04:10,575 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:10,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1213666128, now seen corresponding path program 1 times [2024-02-07 19:04:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613749778] [2024-02-07 19:04:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:10,712 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 19:04:10,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:10,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613749778] [2024-02-07 19:04:10,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613749778] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:10,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:10,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:10,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497323300] [2024-02-07 19:04:10,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:10,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:10,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:10,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:10,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:10,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:10,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 920 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:10,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:10,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:10,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:11,307 INFO L124 PetriNetUnfolderBase]: 3119/6205 cut-off events. [2024-02-07 19:04:11,307 INFO L125 PetriNetUnfolderBase]: For 16836/16838 co-relation queries the response was YES. [2024-02-07 19:04:11,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20306 conditions, 6205 events. 3119/6205 cut-off events. For 16836/16838 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 47442 event pairs, 1018 based on Foata normal form. 4/5887 useless extension candidates. Maximal degree in co-relation 20278. Up to 4181 conditions per place. [2024-02-07 19:04:11,344 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 124 selfloop transitions, 21 changer transitions 0/159 dead transitions. [2024-02-07 19:04:11,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 159 transitions, 1522 flow [2024-02-07 19:04:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-02-07 19:04:11,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49453551912568305 [2024-02-07 19:04:11,346 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 920 flow. Second operand 6 states and 181 transitions. [2024-02-07 19:04:11,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 159 transitions, 1522 flow [2024-02-07 19:04:11,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 159 transitions, 1492 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:11,386 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 1074 flow [2024-02-07 19:04:11,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1074, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2024-02-07 19:04:11,387 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 42 predicate places. [2024-02-07 19:04:11,387 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 1074 flow [2024-02-07 19:04:11,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:11,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:11,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:11,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 19:04:11,388 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:11,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash 14212448, now seen corresponding path program 2 times [2024-02-07 19:04:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480208967] [2024-02-07 19:04:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:11,531 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 19:04:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480208967] [2024-02-07 19:04:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480208967] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:11,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:11,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676035463] [2024-02-07 19:04:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:11,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:11,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 1074 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:11,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:11,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:11,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:12,214 INFO L124 PetriNetUnfolderBase]: 3103/6193 cut-off events. [2024-02-07 19:04:12,214 INFO L125 PetriNetUnfolderBase]: For 18616/18618 co-relation queries the response was YES. [2024-02-07 19:04:12,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20733 conditions, 6193 events. 3103/6193 cut-off events. For 18616/18618 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 47532 event pairs, 1042 based on Foata normal form. 8/5879 useless extension candidates. Maximal degree in co-relation 20701. Up to 4173 conditions per place. [2024-02-07 19:04:12,272 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 117 selfloop transitions, 25 changer transitions 0/156 dead transitions. [2024-02-07 19:04:12,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 156 transitions, 1566 flow [2024-02-07 19:04:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-02-07 19:04:12,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2024-02-07 19:04:12,273 INFO L175 Difference]: Start difference. First operand has 109 places, 115 transitions, 1074 flow. Second operand 6 states and 178 transitions. [2024-02-07 19:04:12,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 156 transitions, 1566 flow [2024-02-07 19:04:12,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 156 transitions, 1497 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:12,323 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 1121 flow [2024-02-07 19:04:12,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1015, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1121, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-02-07 19:04:12,324 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 47 predicate places. [2024-02-07 19:04:12,324 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 1121 flow [2024-02-07 19:04:12,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:12,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:12,325 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] [2024-02-07 19:04:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 19:04:12,325 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:12,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:12,325 INFO L85 PathProgramCache]: Analyzing trace with hash 717608550, now seen corresponding path program 1 times [2024-02-07 19:04:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217830838] [2024-02-07 19:04:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:12,456 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 19:04:12,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:12,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217830838] [2024-02-07 19:04:12,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217830838] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:12,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:12,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649707523] [2024-02-07 19:04:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:12,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:12,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:12,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:12,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:12,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 19:04:12,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 1121 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 19:04:12,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:12,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 19:04:12,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:12,883 INFO L124 PetriNetUnfolderBase]: 2179/3767 cut-off events. [2024-02-07 19:04:12,883 INFO L125 PetriNetUnfolderBase]: For 13888/13890 co-relation queries the response was YES. [2024-02-07 19:04:12,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14115 conditions, 3767 events. 2179/3767 cut-off events. For 13888/13890 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 22228 event pairs, 167 based on Foata normal form. 176/3875 useless extension candidates. Maximal degree in co-relation 14081. Up to 1392 conditions per place. [2024-02-07 19:04:12,910 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 171 selfloop transitions, 11 changer transitions 1/197 dead transitions. [2024-02-07 19:04:12,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 197 transitions, 2240 flow [2024-02-07 19:04:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-02-07 19:04:12,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2024-02-07 19:04:12,911 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 1121 flow. Second operand 6 states and 165 transitions. [2024-02-07 19:04:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 197 transitions, 2240 flow [2024-02-07 19:04:12,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 197 transitions, 1898 flow, removed 72 selfloop flow, removed 11 redundant places. [2024-02-07 19:04:12,933 INFO L231 Difference]: Finished difference. Result has 110 places, 102 transitions, 815 flow [2024-02-07 19:04:12,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=815, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2024-02-07 19:04:12,934 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 43 predicate places. [2024-02-07 19:04:12,934 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 815 flow [2024-02-07 19:04:12,935 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 19:04:12,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:12,935 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 19:04:12,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 19:04:12,935 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 512508835, now seen corresponding path program 1 times [2024-02-07 19:04:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350741705] [2024-02-07 19:04:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:12,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:13,111 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 19:04:13,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:13,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350741705] [2024-02-07 19:04:13,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350741705] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:13,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924355101] [2024-02-07 19:04:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:13,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:13,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:13,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:13,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:13,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 815 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:13,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:13,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:13,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:13,558 INFO L124 PetriNetUnfolderBase]: 2257/4200 cut-off events. [2024-02-07 19:04:13,558 INFO L125 PetriNetUnfolderBase]: For 11674/11674 co-relation queries the response was YES. [2024-02-07 19:04:13,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14458 conditions, 4200 events. 2257/4200 cut-off events. For 11674/11674 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 28075 event pairs, 1101 based on Foata normal form. 8/4098 useless extension candidates. Maximal degree in co-relation 14430. Up to 2483 conditions per place. [2024-02-07 19:04:13,587 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 134 selfloop transitions, 25 changer transitions 0/173 dead transitions. [2024-02-07 19:04:13,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 173 transitions, 1589 flow [2024-02-07 19:04:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-02-07 19:04:13,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48243559718969553 [2024-02-07 19:04:13,588 INFO L175 Difference]: Start difference. First operand has 110 places, 102 transitions, 815 flow. Second operand 7 states and 206 transitions. [2024-02-07 19:04:13,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 173 transitions, 1589 flow [2024-02-07 19:04:13,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 173 transitions, 1383 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-02-07 19:04:13,618 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 848 flow [2024-02-07 19:04:13,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=848, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-02-07 19:04:13,619 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2024-02-07 19:04:13,619 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 848 flow [2024-02-07 19:04:13,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:13,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:13,620 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 19:04:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-07 19:04:13,620 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:13,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash -28195887, now seen corresponding path program 2 times [2024-02-07 19:04:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67495383] [2024-02-07 19:04:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:13,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67495383] [2024-02-07 19:04:13,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67495383] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:13,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:13,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:13,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060410755] [2024-02-07 19:04:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:13,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:13,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:13,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:13,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:13,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 848 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:13,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:13,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:13,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:14,251 INFO L124 PetriNetUnfolderBase]: 2593/4941 cut-off events. [2024-02-07 19:04:14,252 INFO L125 PetriNetUnfolderBase]: For 10352/10354 co-relation queries the response was YES. [2024-02-07 19:04:14,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14733 conditions, 4941 events. 2593/4941 cut-off events. For 10352/10354 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 34569 event pairs, 703 based on Foata normal form. 10/4818 useless extension candidates. Maximal degree in co-relation 14706. Up to 2602 conditions per place. [2024-02-07 19:04:14,306 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 124 selfloop transitions, 26 changer transitions 0/164 dead transitions. [2024-02-07 19:04:14,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 164 transitions, 1407 flow [2024-02-07 19:04:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-02-07 19:04:14,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2024-02-07 19:04:14,310 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 848 flow. Second operand 6 states and 178 transitions. [2024-02-07 19:04:14,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 164 transitions, 1407 flow [2024-02-07 19:04:14,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 164 transitions, 1361 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:14,351 INFO L231 Difference]: Finished difference. Result has 117 places, 108 transitions, 907 flow [2024-02-07 19:04:14,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=907, PETRI_PLACES=117, PETRI_TRANSITIONS=108} [2024-02-07 19:04:14,352 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 50 predicate places. [2024-02-07 19:04:14,352 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 108 transitions, 907 flow [2024-02-07 19:04:14,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:14,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:14,353 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 19:04:14,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-07 19:04:14,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:14,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1309997523, now seen corresponding path program 3 times [2024-02-07 19:04:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:14,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653355343] [2024-02-07 19:04:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:14,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:14,568 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 19:04:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653355343] [2024-02-07 19:04:14,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653355343] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:14,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:14,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:14,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100635433] [2024-02-07 19:04:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:14,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:14,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:14,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 108 transitions, 907 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:14,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:14,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:14,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:15,134 INFO L124 PetriNetUnfolderBase]: 2926/5528 cut-off events. [2024-02-07 19:04:15,134 INFO L125 PetriNetUnfolderBase]: For 14246/14246 co-relation queries the response was YES. [2024-02-07 19:04:15,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16660 conditions, 5528 events. 2926/5528 cut-off events. For 14246/14246 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39435 event pairs, 1660 based on Foata normal form. 8/5375 useless extension candidates. Maximal degree in co-relation 16630. Up to 3716 conditions per place. [2024-02-07 19:04:15,174 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 144 selfloop transitions, 28 changer transitions 0/186 dead transitions. [2024-02-07 19:04:15,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 186 transitions, 1619 flow [2024-02-07 19:04:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-02-07 19:04:15,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44990892531876137 [2024-02-07 19:04:15,176 INFO L175 Difference]: Start difference. First operand has 117 places, 108 transitions, 907 flow. Second operand 9 states and 247 transitions. [2024-02-07 19:04:15,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 186 transitions, 1619 flow [2024-02-07 19:04:15,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 186 transitions, 1563 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:15,216 INFO L231 Difference]: Finished difference. Result has 128 places, 114 transitions, 1003 flow [2024-02-07 19:04:15,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1003, PETRI_PLACES=128, PETRI_TRANSITIONS=114} [2024-02-07 19:04:15,217 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 61 predicate places. [2024-02-07 19:04:15,217 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 114 transitions, 1003 flow [2024-02-07 19:04:15,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:15,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:15,217 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 19:04:15,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-07 19:04:15,218 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:15,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1862892443, now seen corresponding path program 4 times [2024-02-07 19:04:15,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:15,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665783802] [2024-02-07 19:04:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:15,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:15,380 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 19:04:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:15,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665783802] [2024-02-07 19:04:15,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665783802] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:15,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:15,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882267187] [2024-02-07 19:04:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:15,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:15,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 114 transitions, 1003 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:15,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:15,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:15,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:16,099 INFO L124 PetriNetUnfolderBase]: 3528/6832 cut-off events. [2024-02-07 19:04:16,100 INFO L125 PetriNetUnfolderBase]: For 16828/16830 co-relation queries the response was YES. [2024-02-07 19:04:16,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20033 conditions, 6832 events. 3528/6832 cut-off events. For 16828/16830 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 51950 event pairs, 819 based on Foata normal form. 10/6645 useless extension candidates. Maximal degree in co-relation 19998. Up to 3206 conditions per place. [2024-02-07 19:04:16,164 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 137 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-02-07 19:04:16,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 180 transitions, 1655 flow [2024-02-07 19:04:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2024-02-07 19:04:16,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-07 19:04:16,165 INFO L175 Difference]: Start difference. First operand has 128 places, 114 transitions, 1003 flow. Second operand 6 states and 183 transitions. [2024-02-07 19:04:16,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 180 transitions, 1655 flow [2024-02-07 19:04:16,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 180 transitions, 1565 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:16,221 INFO L231 Difference]: Finished difference. Result has 133 places, 117 transitions, 1036 flow [2024-02-07 19:04:16,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1036, PETRI_PLACES=133, PETRI_TRANSITIONS=117} [2024-02-07 19:04:16,222 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 66 predicate places. [2024-02-07 19:04:16,222 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 117 transitions, 1036 flow [2024-02-07 19:04:16,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:16,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:16,222 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 19:04:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-07 19:04:16,223 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:16,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:16,223 INFO L85 PathProgramCache]: Analyzing trace with hash 220246499, now seen corresponding path program 5 times [2024-02-07 19:04:16,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:16,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923784141] [2024-02-07 19:04:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:16,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:16,408 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 19:04:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923784141] [2024-02-07 19:04:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923784141] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:16,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:16,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57043288] [2024-02-07 19:04:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:16,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:16,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:16,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:16,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:16,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:16,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 117 transitions, 1036 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:16,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:16,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:16,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:17,067 INFO L124 PetriNetUnfolderBase]: 3532/6826 cut-off events. [2024-02-07 19:04:17,067 INFO L125 PetriNetUnfolderBase]: For 19202/19202 co-relation queries the response was YES. [2024-02-07 19:04:17,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20210 conditions, 6826 events. 3532/6826 cut-off events. For 19202/19202 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51803 event pairs, 2190 based on Foata normal form. 8/6609 useless extension candidates. Maximal degree in co-relation 20172. Up to 4706 conditions per place. [2024-02-07 19:04:17,126 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 139 selfloop transitions, 26 changer transitions 0/179 dead transitions. [2024-02-07 19:04:17,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 179 transitions, 1638 flow [2024-02-07 19:04:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:17,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-07 19:04:17,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47306791569086654 [2024-02-07 19:04:17,127 INFO L175 Difference]: Start difference. First operand has 133 places, 117 transitions, 1036 flow. Second operand 7 states and 202 transitions. [2024-02-07 19:04:17,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 179 transitions, 1638 flow [2024-02-07 19:04:17,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 179 transitions, 1602 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:17,195 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 1059 flow [2024-02-07 19:04:17,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1059, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2024-02-07 19:04:17,196 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 72 predicate places. [2024-02-07 19:04:17,196 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 1059 flow [2024-02-07 19:04:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:17,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:17,196 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 19:04:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-07 19:04:17,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:17,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -87572249, now seen corresponding path program 6 times [2024-02-07 19:04:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138806719] [2024-02-07 19:04:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138806719] [2024-02-07 19:04:17,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138806719] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:17,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:17,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866054715] [2024-02-07 19:04:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:17,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:17,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:17,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:17,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 1059 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:17,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:17,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:17,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:18,003 INFO L124 PetriNetUnfolderBase]: 3536/6946 cut-off events. [2024-02-07 19:04:18,003 INFO L125 PetriNetUnfolderBase]: For 16896/16898 co-relation queries the response was YES. [2024-02-07 19:04:18,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20343 conditions, 6946 events. 3536/6946 cut-off events. For 16896/16898 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53640 event pairs, 819 based on Foata normal form. 10/6727 useless extension candidates. Maximal degree in co-relation 20304. Up to 3218 conditions per place. [2024-02-07 19:04:18,062 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 141 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-02-07 19:04:18,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 180 transitions, 1693 flow [2024-02-07 19:04:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-02-07 19:04:18,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972677595628415 [2024-02-07 19:04:18,064 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 1059 flow. Second operand 6 states and 182 transitions. [2024-02-07 19:04:18,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 180 transitions, 1693 flow [2024-02-07 19:04:18,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 180 transitions, 1642 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:18,118 INFO L231 Difference]: Finished difference. Result has 141 places, 118 transitions, 1079 flow [2024-02-07 19:04:18,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1079, PETRI_PLACES=141, PETRI_TRANSITIONS=118} [2024-02-07 19:04:18,120 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 74 predicate places. [2024-02-07 19:04:18,121 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 118 transitions, 1079 flow [2024-02-07 19:04:18,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:18,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:18,121 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 19:04:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-07 19:04:18,122 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:18,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2088707167, now seen corresponding path program 7 times [2024-02-07 19:04:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:18,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422724729] [2024-02-07 19:04:18,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:18,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:18,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:18,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422724729] [2024-02-07 19:04:18,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422724729] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:18,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:18,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:18,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385281440] [2024-02-07 19:04:18,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:18,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:18,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:18,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:18,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:18,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:18,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 118 transitions, 1079 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:18,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:18,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:18,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:19,179 INFO L124 PetriNetUnfolderBase]: 3777/7345 cut-off events. [2024-02-07 19:04:19,180 INFO L125 PetriNetUnfolderBase]: For 19684/19684 co-relation queries the response was YES. [2024-02-07 19:04:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21817 conditions, 7345 events. 3777/7345 cut-off events. For 19684/19684 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 56912 event pairs, 2417 based on Foata normal form. 8/7094 useless extension candidates. Maximal degree in co-relation 21776. Up to 5265 conditions per place. [2024-02-07 19:04:19,221 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 128 selfloop transitions, 32 changer transitions 0/174 dead transitions. [2024-02-07 19:04:19,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 174 transitions, 1696 flow [2024-02-07 19:04:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-07 19:04:19,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2024-02-07 19:04:19,222 INFO L175 Difference]: Start difference. First operand has 141 places, 118 transitions, 1079 flow. Second operand 7 states and 196 transitions. [2024-02-07 19:04:19,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 174 transitions, 1696 flow [2024-02-07 19:04:19,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 174 transitions, 1647 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:19,280 INFO L231 Difference]: Finished difference. Result has 147 places, 123 transitions, 1176 flow [2024-02-07 19:04:19,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1176, PETRI_PLACES=147, PETRI_TRANSITIONS=123} [2024-02-07 19:04:19,281 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 80 predicate places. [2024-02-07 19:04:19,281 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 123 transitions, 1176 flow [2024-02-07 19:04:19,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:19,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:19,282 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, 1] [2024-02-07 19:04:19,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-07 19:04:19,282 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:19,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1140888513, now seen corresponding path program 8 times [2024-02-07 19:04:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757918624] [2024-02-07 19:04:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:19,437 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 19:04:19,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757918624] [2024-02-07 19:04:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757918624] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:19,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445752803] [2024-02-07 19:04:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:19,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:19,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:19,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:19,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:19,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:19,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 123 transitions, 1176 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:19,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:19,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:19,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:20,418 INFO L124 PetriNetUnfolderBase]: 4661/9224 cut-off events. [2024-02-07 19:04:20,418 INFO L125 PetriNetUnfolderBase]: For 24081/24081 co-relation queries the response was YES. [2024-02-07 19:04:20,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26672 conditions, 9224 events. 4661/9224 cut-off events. For 24081/24081 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 75831 event pairs, 2403 based on Foata normal form. 8/8902 useless extension candidates. Maximal degree in co-relation 26629. Up to 4093 conditions per place. [2024-02-07 19:04:20,502 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 151 selfloop transitions, 36 changer transitions 0/201 dead transitions. [2024-02-07 19:04:20,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 201 transitions, 1976 flow [2024-02-07 19:04:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-02-07 19:04:20,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2024-02-07 19:04:20,504 INFO L175 Difference]: Start difference. First operand has 147 places, 123 transitions, 1176 flow. Second operand 7 states and 210 transitions. [2024-02-07 19:04:20,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 201 transitions, 1976 flow [2024-02-07 19:04:20,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 201 transitions, 1914 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:20,620 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 1274 flow [2024-02-07 19:04:20,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1274, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-02-07 19:04:20,621 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 87 predicate places. [2024-02-07 19:04:20,621 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 1274 flow [2024-02-07 19:04:20,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:20,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:20,621 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 19:04:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-07 19:04:20,622 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:20,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash -345579469, now seen corresponding path program 9 times [2024-02-07 19:04:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:20,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785537261] [2024-02-07 19:04:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:20,780 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 19:04:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785537261] [2024-02-07 19:04:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785537261] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723683639] [2024-02-07 19:04:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:20,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:20,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:20,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:20,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:20,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 1274 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:20,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:20,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:20,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:21,677 INFO L124 PetriNetUnfolderBase]: 4665/9282 cut-off events. [2024-02-07 19:04:21,677 INFO L125 PetriNetUnfolderBase]: For 26595/26595 co-relation queries the response was YES. [2024-02-07 19:04:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27002 conditions, 9282 events. 4665/9282 cut-off events. For 26595/26595 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 76790 event pairs, 2359 based on Foata normal form. 8/8944 useless extension candidates. Maximal degree in co-relation 26957. Up to 4093 conditions per place. [2024-02-07 19:04:21,766 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 151 selfloop transitions, 36 changer transitions 0/201 dead transitions. [2024-02-07 19:04:21,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 201 transitions, 2051 flow [2024-02-07 19:04:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:21,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:21,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-07 19:04:21,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894613583138173 [2024-02-07 19:04:21,767 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 1274 flow. Second operand 7 states and 209 transitions. [2024-02-07 19:04:21,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 201 transitions, 2051 flow [2024-02-07 19:04:21,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 201 transitions, 1976 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:21,869 INFO L231 Difference]: Finished difference. Result has 160 places, 130 transitions, 1354 flow [2024-02-07 19:04:21,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1354, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2024-02-07 19:04:21,870 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 93 predicate places. [2024-02-07 19:04:21,870 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 1354 flow [2024-02-07 19:04:21,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:21,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:21,870 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 19:04:21,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-07 19:04:21,870 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:21,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1336312227, now seen corresponding path program 10 times [2024-02-07 19:04:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:21,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507568266] [2024-02-07 19:04:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:22,011 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 19:04:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:22,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507568266] [2024-02-07 19:04:22,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507568266] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:22,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:22,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:22,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552792668] [2024-02-07 19:04:22,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:22,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:22,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:22,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:22,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:22,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 1354 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:22,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:22,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:22,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:23,073 INFO L124 PetriNetUnfolderBase]: 4935/9880 cut-off events. [2024-02-07 19:04:23,073 INFO L125 PetriNetUnfolderBase]: For 27885/27885 co-relation queries the response was YES. [2024-02-07 19:04:23,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28557 conditions, 9880 events. 4935/9880 cut-off events. For 27885/27885 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 83154 event pairs, 2387 based on Foata normal form. 8/9510 useless extension candidates. Maximal degree in co-relation 28509. Up to 4093 conditions per place. [2024-02-07 19:04:23,160 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 168 selfloop transitions, 45 changer transitions 0/227 dead transitions. [2024-02-07 19:04:23,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 227 transitions, 2271 flow [2024-02-07 19:04:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:23,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 267 transitions. [2024-02-07 19:04:23,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48633879781420764 [2024-02-07 19:04:23,162 INFO L175 Difference]: Start difference. First operand has 160 places, 130 transitions, 1354 flow. Second operand 9 states and 267 transitions. [2024-02-07 19:04:23,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 227 transitions, 2271 flow [2024-02-07 19:04:23,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 227 transitions, 2214 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:23,298 INFO L231 Difference]: Finished difference. Result has 168 places, 132 transitions, 1442 flow [2024-02-07 19:04:23,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1442, PETRI_PLACES=168, PETRI_TRANSITIONS=132} [2024-02-07 19:04:23,299 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 101 predicate places. [2024-02-07 19:04:23,299 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 132 transitions, 1442 flow [2024-02-07 19:04:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:23,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:23,300 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 19:04:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-07 19:04:23,300 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:23,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash 138016807, now seen corresponding path program 11 times [2024-02-07 19:04:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:23,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435303544] [2024-02-07 19:04:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:23,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:23,471 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 19:04:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435303544] [2024-02-07 19:04:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435303544] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961229272] [2024-02-07 19:04:23,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:23,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:23,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 132 transitions, 1442 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:23,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:23,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:23,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:24,566 INFO L124 PetriNetUnfolderBase]: 4923/9821 cut-off events. [2024-02-07 19:04:24,566 INFO L125 PetriNetUnfolderBase]: For 31396/31396 co-relation queries the response was YES. [2024-02-07 19:04:24,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28937 conditions, 9821 events. 4923/9821 cut-off events. For 31396/31396 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 82244 event pairs, 3125 based on Foata normal form. 8/9444 useless extension candidates. Maximal degree in co-relation 28886. Up to 6389 conditions per place. [2024-02-07 19:04:24,680 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 151 selfloop transitions, 30 changer transitions 0/195 dead transitions. [2024-02-07 19:04:24,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 195 transitions, 2131 flow [2024-02-07 19:04:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-07 19:04:24,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47306791569086654 [2024-02-07 19:04:24,682 INFO L175 Difference]: Start difference. First operand has 168 places, 132 transitions, 1442 flow. Second operand 7 states and 202 transitions. [2024-02-07 19:04:24,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 195 transitions, 2131 flow [2024-02-07 19:04:24,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 195 transitions, 2051 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:24,838 INFO L231 Difference]: Finished difference. Result has 171 places, 133 transitions, 1456 flow [2024-02-07 19:04:24,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1456, PETRI_PLACES=171, PETRI_TRANSITIONS=133} [2024-02-07 19:04:24,839 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 104 predicate places. [2024-02-07 19:04:24,839 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 133 transitions, 1456 flow [2024-02-07 19:04:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:24,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:24,840 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 19:04:24,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-07 19:04:24,840 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:24,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 583285361, now seen corresponding path program 12 times [2024-02-07 19:04:24,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:24,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004720173] [2024-02-07 19:04:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:24,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:25,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:25,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004720173] [2024-02-07 19:04:25,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004720173] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:25,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:25,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:25,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372920215] [2024-02-07 19:04:25,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:25,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:25,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:25,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:25,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:25,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:25,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 133 transitions, 1456 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:25,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:25,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:25,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:26,058 INFO L124 PetriNetUnfolderBase]: 4911/9803 cut-off events. [2024-02-07 19:04:26,059 INFO L125 PetriNetUnfolderBase]: For 31859/31859 co-relation queries the response was YES. [2024-02-07 19:04:26,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28851 conditions, 9803 events. 4911/9803 cut-off events. For 31859/31859 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 82124 event pairs, 3105 based on Foata normal form. 8/9426 useless extension candidates. Maximal degree in co-relation 28798. Up to 6389 conditions per place. [2024-02-07 19:04:26,162 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 172 selfloop transitions, 32 changer transitions 0/218 dead transitions. [2024-02-07 19:04:26,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 218 transitions, 2258 flow [2024-02-07 19:04:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-02-07 19:04:26,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46265938069216755 [2024-02-07 19:04:26,164 INFO L175 Difference]: Start difference. First operand has 171 places, 133 transitions, 1456 flow. Second operand 9 states and 254 transitions. [2024-02-07 19:04:26,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 218 transitions, 2258 flow [2024-02-07 19:04:26,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 218 transitions, 2206 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:26,300 INFO L231 Difference]: Finished difference. Result has 179 places, 134 transitions, 1488 flow [2024-02-07 19:04:26,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=179, PETRI_TRANSITIONS=134} [2024-02-07 19:04:26,301 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 112 predicate places. [2024-02-07 19:04:26,301 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 134 transitions, 1488 flow [2024-02-07 19:04:26,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:26,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:26,302 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 19:04:26,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-07 19:04:26,302 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:26,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1807639551, now seen corresponding path program 13 times [2024-02-07 19:04:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802362056] [2024-02-07 19:04:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:26,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:26,475 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 19:04:26,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:26,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802362056] [2024-02-07 19:04:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802362056] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185521874] [2024-02-07 19:04:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:26,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:26,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:26,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:26,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:26,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 134 transitions, 1488 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:26,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:26,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:26,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:27,461 INFO L124 PetriNetUnfolderBase]: 4899/9877 cut-off events. [2024-02-07 19:04:27,461 INFO L125 PetriNetUnfolderBase]: For 31831/31831 co-relation queries the response was YES. [2024-02-07 19:04:27,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28947 conditions, 9877 events. 4899/9877 cut-off events. For 31831/31831 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 83287 event pairs, 1612 based on Foata normal form. 8/9512 useless extension candidates. Maximal degree in co-relation 28892. Up to 5008 conditions per place. [2024-02-07 19:04:27,577 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 145 selfloop transitions, 43 changer transitions 0/202 dead transitions. [2024-02-07 19:04:27,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 202 transitions, 2179 flow [2024-02-07 19:04:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-07 19:04:27,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49882903981264637 [2024-02-07 19:04:27,578 INFO L175 Difference]: Start difference. First operand has 179 places, 134 transitions, 1488 flow. Second operand 7 states and 213 transitions. [2024-02-07 19:04:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 202 transitions, 2179 flow [2024-02-07 19:04:27,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 202 transitions, 2112 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:27,883 INFO L231 Difference]: Finished difference. Result has 180 places, 134 transitions, 1513 flow [2024-02-07 19:04:27,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1513, PETRI_PLACES=180, PETRI_TRANSITIONS=134} [2024-02-07 19:04:27,883 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 113 predicate places. [2024-02-07 19:04:27,883 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 134 transitions, 1513 flow [2024-02-07 19:04:27,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:27,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:27,884 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 19:04:27,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-07 19:04:27,884 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:27,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1326616899, now seen corresponding path program 14 times [2024-02-07 19:04:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:27,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615834573] [2024-02-07 19:04:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:27,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:28,060 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 19:04:28,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:28,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615834573] [2024-02-07 19:04:28,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615834573] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:28,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:28,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:28,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312665134] [2024-02-07 19:04:28,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:28,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:28,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:28,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 134 transitions, 1513 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:28,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:28,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:28,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:29,131 INFO L124 PetriNetUnfolderBase]: 4887/9778 cut-off events. [2024-02-07 19:04:29,131 INFO L125 PetriNetUnfolderBase]: For 34134/34134 co-relation queries the response was YES. [2024-02-07 19:04:29,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28973 conditions, 9778 events. 4887/9778 cut-off events. For 34134/34134 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 82075 event pairs, 2447 based on Foata normal form. 8/9408 useless extension candidates. Maximal degree in co-relation 28918. Up to 4072 conditions per place. [2024-02-07 19:04:29,229 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 154 selfloop transitions, 45 changer transitions 0/213 dead transitions. [2024-02-07 19:04:29,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 213 transitions, 2324 flow [2024-02-07 19:04:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-02-07 19:04:29,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663023679417122 [2024-02-07 19:04:29,232 INFO L175 Difference]: Start difference. First operand has 180 places, 134 transitions, 1513 flow. Second operand 9 states and 256 transitions. [2024-02-07 19:04:29,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 213 transitions, 2324 flow [2024-02-07 19:04:29,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 213 transitions, 2244 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:29,393 INFO L231 Difference]: Finished difference. Result has 183 places, 134 transitions, 1536 flow [2024-02-07 19:04:29,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1536, PETRI_PLACES=183, PETRI_TRANSITIONS=134} [2024-02-07 19:04:29,394 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 116 predicate places. [2024-02-07 19:04:29,394 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 134 transitions, 1536 flow [2024-02-07 19:04:29,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:29,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:29,394 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 19:04:29,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-07 19:04:29,394 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:29,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:29,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1313093887, now seen corresponding path program 15 times [2024-02-07 19:04:29,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:29,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318468469] [2024-02-07 19:04:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:29,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318468469] [2024-02-07 19:04:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318468469] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:29,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300826310] [2024-02-07 19:04:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:29,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:29,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:29,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 134 transitions, 1536 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:29,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:29,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:29,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:30,561 INFO L124 PetriNetUnfolderBase]: 4875/9762 cut-off events. [2024-02-07 19:04:30,561 INFO L125 PetriNetUnfolderBase]: For 34638/34638 co-relation queries the response was YES. [2024-02-07 19:04:30,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28878 conditions, 9762 events. 4875/9762 cut-off events. For 34638/34638 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 82051 event pairs, 2611 based on Foata normal form. 8/9392 useless extension candidates. Maximal degree in co-relation 28824. Up to 4072 conditions per place. [2024-02-07 19:04:30,638 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 141 selfloop transitions, 34 changer transitions 0/189 dead transitions. [2024-02-07 19:04:30,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 189 transitions, 2181 flow [2024-02-07 19:04:30,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-02-07 19:04:30,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46604215456674475 [2024-02-07 19:04:30,640 INFO L175 Difference]: Start difference. First operand has 183 places, 134 transitions, 1536 flow. Second operand 7 states and 199 transitions. [2024-02-07 19:04:30,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 189 transitions, 2181 flow [2024-02-07 19:04:30,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 189 transitions, 2062 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-02-07 19:04:30,800 INFO L231 Difference]: Finished difference. Result has 178 places, 134 transitions, 1501 flow [2024-02-07 19:04:30,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1501, PETRI_PLACES=178, PETRI_TRANSITIONS=134} [2024-02-07 19:04:30,801 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 111 predicate places. [2024-02-07 19:04:30,801 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 134 transitions, 1501 flow [2024-02-07 19:04:30,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:30,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:30,802 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 19:04:30,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-07 19:04:30,802 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:30,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:30,803 INFO L85 PathProgramCache]: Analyzing trace with hash -171851391, now seen corresponding path program 16 times [2024-02-07 19:04:30,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:30,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007976313] [2024-02-07 19:04:30,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:30,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:30,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:30,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007976313] [2024-02-07 19:04:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007976313] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:30,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:30,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842952667] [2024-02-07 19:04:30,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:30,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:30,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:30,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:30,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:30,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:30,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 134 transitions, 1501 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:30,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:30,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:30,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:31,894 INFO L124 PetriNetUnfolderBase]: 5270/10588 cut-off events. [2024-02-07 19:04:31,894 INFO L125 PetriNetUnfolderBase]: For 31645/31645 co-relation queries the response was YES. [2024-02-07 19:04:31,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30634 conditions, 10588 events. 5270/10588 cut-off events. For 31645/31645 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 90652 event pairs, 1736 based on Foata normal form. 8/10191 useless extension candidates. Maximal degree in co-relation 30583. Up to 5312 conditions per place. [2024-02-07 19:04:31,986 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 163 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2024-02-07 19:04:31,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 210 transitions, 2301 flow [2024-02-07 19:04:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-07 19:04:31,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49882903981264637 [2024-02-07 19:04:31,988 INFO L175 Difference]: Start difference. First operand has 178 places, 134 transitions, 1501 flow. Second operand 7 states and 213 transitions. [2024-02-07 19:04:31,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 210 transitions, 2301 flow [2024-02-07 19:04:32,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 210 transitions, 2201 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-02-07 19:04:32,135 INFO L231 Difference]: Finished difference. Result has 177 places, 137 transitions, 1562 flow [2024-02-07 19:04:32,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1562, PETRI_PLACES=177, PETRI_TRANSITIONS=137} [2024-02-07 19:04:32,135 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 110 predicate places. [2024-02-07 19:04:32,136 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 137 transitions, 1562 flow [2024-02-07 19:04:32,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:32,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:32,136 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, 1] [2024-02-07 19:04:32,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-07 19:04:32,136 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:32,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -60279801, now seen corresponding path program 17 times [2024-02-07 19:04:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656682964] [2024-02-07 19:04:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:32,267 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 19:04:32,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:32,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656682964] [2024-02-07 19:04:32,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656682964] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:32,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:32,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:32,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259651803] [2024-02-07 19:04:32,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:32,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:32,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:32,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:32,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:32,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:32,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 137 transitions, 1562 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:32,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:32,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:32,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:33,509 INFO L124 PetriNetUnfolderBase]: 5573/11247 cut-off events. [2024-02-07 19:04:33,509 INFO L125 PetriNetUnfolderBase]: For 31433/31433 co-relation queries the response was YES. [2024-02-07 19:04:33,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32267 conditions, 11247 events. 5573/11247 cut-off events. For 31433/31433 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 97807 event pairs, 1793 based on Foata normal form. 8/10820 useless extension candidates. Maximal degree in co-relation 32217. Up to 5312 conditions per place. [2024-02-07 19:04:33,633 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 178 selfloop transitions, 36 changer transitions 0/228 dead transitions. [2024-02-07 19:04:33,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 228 transitions, 2450 flow [2024-02-07 19:04:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:04:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:04:33,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 242 transitions. [2024-02-07 19:04:33,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959016393442623 [2024-02-07 19:04:33,635 INFO L175 Difference]: Start difference. First operand has 177 places, 137 transitions, 1562 flow. Second operand 8 states and 242 transitions. [2024-02-07 19:04:33,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 228 transitions, 2450 flow [2024-02-07 19:04:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 228 transitions, 2369 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:33,827 INFO L231 Difference]: Finished difference. Result has 183 places, 141 transitions, 1639 flow [2024-02-07 19:04:33,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1639, PETRI_PLACES=183, PETRI_TRANSITIONS=141} [2024-02-07 19:04:33,827 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 116 predicate places. [2024-02-07 19:04:33,827 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 141 transitions, 1639 flow [2024-02-07 19:04:33,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:33,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:33,828 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 19:04:33,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-07 19:04:33,828 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:33,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1027219419, now seen corresponding path program 18 times [2024-02-07 19:04:33,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:33,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139159458] [2024-02-07 19:04:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:33,977 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 19:04:33,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139159458] [2024-02-07 19:04:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139159458] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:33,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:33,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:33,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500697511] [2024-02-07 19:04:33,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:33,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:33,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:33,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:33,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:33,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 141 transitions, 1639 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:33,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:33,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:33,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:35,039 INFO L124 PetriNetUnfolderBase]: 5577/11315 cut-off events. [2024-02-07 19:04:35,039 INFO L125 PetriNetUnfolderBase]: For 32379/32379 co-relation queries the response was YES. [2024-02-07 19:04:35,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32380 conditions, 11315 events. 5577/11315 cut-off events. For 32379/32379 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 98696 event pairs, 1852 based on Foata normal form. 8/10870 useless extension candidates. Maximal degree in co-relation 32327. Up to 5312 conditions per place. [2024-02-07 19:04:35,151 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 163 selfloop transitions, 39 changer transitions 0/216 dead transitions. [2024-02-07 19:04:35,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 216 transitions, 2419 flow [2024-02-07 19:04:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:35,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-07 19:04:35,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035128805620609 [2024-02-07 19:04:35,153 INFO L175 Difference]: Start difference. First operand has 183 places, 141 transitions, 1639 flow. Second operand 7 states and 215 transitions. [2024-02-07 19:04:35,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 216 transitions, 2419 flow [2024-02-07 19:04:35,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 216 transitions, 2330 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:35,359 INFO L231 Difference]: Finished difference. Result has 185 places, 142 transitions, 1666 flow [2024-02-07 19:04:35,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1666, PETRI_PLACES=185, PETRI_TRANSITIONS=142} [2024-02-07 19:04:35,360 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 118 predicate places. [2024-02-07 19:04:35,360 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 142 transitions, 1666 flow [2024-02-07 19:04:35,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:35,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:35,360 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 19:04:35,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-07 19:04:35,361 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:35,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:35,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1032853209, now seen corresponding path program 19 times [2024-02-07 19:04:35,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629999949] [2024-02-07 19:04:35,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629999949] [2024-02-07 19:04:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629999949] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:35,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438784294] [2024-02-07 19:04:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:35,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:35,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:35,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:35,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:35,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 142 transitions, 1666 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:35,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:35,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:35,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:36,628 INFO L124 PetriNetUnfolderBase]: 5902/11892 cut-off events. [2024-02-07 19:04:36,628 INFO L125 PetriNetUnfolderBase]: For 35607/35607 co-relation queries the response was YES. [2024-02-07 19:04:36,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34305 conditions, 11892 events. 5902/11892 cut-off events. For 35607/35607 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 104299 event pairs, 1809 based on Foata normal form. 8/11449 useless extension candidates. Maximal degree in co-relation 34253. Up to 5312 conditions per place. [2024-02-07 19:04:36,738 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 185 selfloop transitions, 41 changer transitions 0/240 dead transitions. [2024-02-07 19:04:36,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 240 transitions, 2620 flow [2024-02-07 19:04:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:36,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-02-07 19:04:36,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808743169398907 [2024-02-07 19:04:36,739 INFO L175 Difference]: Start difference. First operand has 185 places, 142 transitions, 1666 flow. Second operand 9 states and 264 transitions. [2024-02-07 19:04:36,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 240 transitions, 2620 flow [2024-02-07 19:04:36,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 240 transitions, 2551 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:36,966 INFO L231 Difference]: Finished difference. Result has 193 places, 149 transitions, 1830 flow [2024-02-07 19:04:36,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1830, PETRI_PLACES=193, PETRI_TRANSITIONS=149} [2024-02-07 19:04:36,967 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 126 predicate places. [2024-02-07 19:04:36,967 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 149 transitions, 1830 flow [2024-02-07 19:04:36,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:36,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:36,967 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 19:04:36,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-07 19:04:36,968 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:36,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash 997342269, now seen corresponding path program 20 times [2024-02-07 19:04:36,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:36,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56273581] [2024-02-07 19:04:36,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:36,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:37,125 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 19:04:37,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:37,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56273581] [2024-02-07 19:04:37,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56273581] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:37,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:37,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:37,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032307299] [2024-02-07 19:04:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:37,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:37,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:37,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:37,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 149 transitions, 1830 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:37,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:37,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:37,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:38,297 INFO L124 PetriNetUnfolderBase]: 5890/11838 cut-off events. [2024-02-07 19:04:38,297 INFO L125 PetriNetUnfolderBase]: For 39386/39386 co-relation queries the response was YES. [2024-02-07 19:04:38,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34618 conditions, 11838 events. 5890/11838 cut-off events. For 39386/39386 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103331 event pairs, 2053 based on Foata normal form. 8/11393 useless extension candidates. Maximal degree in co-relation 34563. Up to 5312 conditions per place. [2024-02-07 19:04:38,442 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 157 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2024-02-07 19:04:38,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 205 transitions, 2493 flow [2024-02-07 19:04:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:38,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-02-07 19:04:38,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027322404371585 [2024-02-07 19:04:38,444 INFO L175 Difference]: Start difference. First operand has 193 places, 149 transitions, 1830 flow. Second operand 6 states and 184 transitions. [2024-02-07 19:04:38,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 205 transitions, 2493 flow [2024-02-07 19:04:38,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 205 transitions, 2434 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:38,701 INFO L231 Difference]: Finished difference. Result has 195 places, 149 transitions, 1845 flow [2024-02-07 19:04:38,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1845, PETRI_PLACES=195, PETRI_TRANSITIONS=149} [2024-02-07 19:04:38,702 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 128 predicate places. [2024-02-07 19:04:38,702 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 149 transitions, 1845 flow [2024-02-07 19:04:38,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:38,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:38,703 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 19:04:38,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-07 19:04:38,703 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:38,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:38,704 INFO L85 PathProgramCache]: Analyzing trace with hash -711873935, now seen corresponding path program 21 times [2024-02-07 19:04:38,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:38,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066630145] [2024-02-07 19:04:38,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:38,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:38,853 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 19:04:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:38,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066630145] [2024-02-07 19:04:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066630145] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555961539] [2024-02-07 19:04:38,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:38,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:38,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:38,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 149 transitions, 1845 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:38,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:38,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:38,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:39,958 INFO L124 PetriNetUnfolderBase]: 5878/11836 cut-off events. [2024-02-07 19:04:39,958 INFO L125 PetriNetUnfolderBase]: For 40006/40006 co-relation queries the response was YES. [2024-02-07 19:04:40,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34731 conditions, 11836 events. 5878/11836 cut-off events. For 40006/40006 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103662 event pairs, 1885 based on Foata normal form. 8/11393 useless extension candidates. Maximal degree in co-relation 34675. Up to 5312 conditions per place. [2024-02-07 19:04:40,073 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 166 selfloop transitions, 37 changer transitions 0/217 dead transitions. [2024-02-07 19:04:40,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 217 transitions, 2560 flow [2024-02-07 19:04:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 19:04:40,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964871194379391 [2024-02-07 19:04:40,074 INFO L175 Difference]: Start difference. First operand has 195 places, 149 transitions, 1845 flow. Second operand 7 states and 212 transitions. [2024-02-07 19:04:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 217 transitions, 2560 flow [2024-02-07 19:04:40,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 217 transitions, 2500 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:40,300 INFO L231 Difference]: Finished difference. Result has 196 places, 149 transitions, 1875 flow [2024-02-07 19:04:40,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1875, PETRI_PLACES=196, PETRI_TRANSITIONS=149} [2024-02-07 19:04:40,301 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 129 predicate places. [2024-02-07 19:04:40,301 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 149 transitions, 1875 flow [2024-02-07 19:04:40,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:40,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:40,301 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 19:04:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-07 19:04:40,302 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:40,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash -132843775, now seen corresponding path program 22 times [2024-02-07 19:04:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076406886] [2024-02-07 19:04:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:40,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:40,427 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 19:04:40,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:40,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076406886] [2024-02-07 19:04:40,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076406886] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:40,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:40,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228957079] [2024-02-07 19:04:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:40,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:40,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:40,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 149 transitions, 1875 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:40,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:40,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:40,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:41,502 INFO L124 PetriNetUnfolderBase]: 5912/11924 cut-off events. [2024-02-07 19:04:41,502 INFO L125 PetriNetUnfolderBase]: For 42439/42441 co-relation queries the response was YES. [2024-02-07 19:04:41,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35022 conditions, 11924 events. 5912/11924 cut-off events. For 42439/42441 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 104377 event pairs, 1973 based on Foata normal form. 10/11481 useless extension candidates. Maximal degree in co-relation 34967. Up to 6830 conditions per place. [2024-02-07 19:04:41,611 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 157 selfloop transitions, 33 changer transitions 0/204 dead transitions. [2024-02-07 19:04:41,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 204 transitions, 2525 flow [2024-02-07 19:04:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-02-07 19:04:41,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48360655737704916 [2024-02-07 19:04:41,613 INFO L175 Difference]: Start difference. First operand has 196 places, 149 transitions, 1875 flow. Second operand 6 states and 177 transitions. [2024-02-07 19:04:41,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 204 transitions, 2525 flow [2024-02-07 19:04:41,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 204 transitions, 2429 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-07 19:04:41,825 INFO L231 Difference]: Finished difference. Result has 196 places, 153 transitions, 1924 flow [2024-02-07 19:04:41,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=196, PETRI_TRANSITIONS=153} [2024-02-07 19:04:41,825 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 129 predicate places. [2024-02-07 19:04:41,825 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 153 transitions, 1924 flow [2024-02-07 19:04:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 19:04:41,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:41,826 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 19:04:41,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-07 19:04:41,826 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:41,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1960847391, now seen corresponding path program 23 times [2024-02-07 19:04:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414797957] [2024-02-07 19:04:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:41,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:41,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414797957] [2024-02-07 19:04:41,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414797957] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:41,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:41,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996294265] [2024-02-07 19:04:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:41,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:41,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 153 transitions, 1924 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:41,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:41,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:41,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:43,082 INFO L124 PetriNetUnfolderBase]: 5951/11893 cut-off events. [2024-02-07 19:04:43,082 INFO L125 PetriNetUnfolderBase]: For 43461/43461 co-relation queries the response was YES. [2024-02-07 19:04:43,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35288 conditions, 11893 events. 5951/11893 cut-off events. For 43461/43461 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 103060 event pairs, 4181 based on Foata normal form. 8/11434 useless extension candidates. Maximal degree in co-relation 35232. Up to 8665 conditions per place. [2024-02-07 19:04:43,186 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 151 selfloop transitions, 39 changer transitions 0/204 dead transitions. [2024-02-07 19:04:43,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 204 transitions, 2572 flow [2024-02-07 19:04:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-02-07 19:04:43,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45901639344262296 [2024-02-07 19:04:43,187 INFO L175 Difference]: Start difference. First operand has 196 places, 153 transitions, 1924 flow. Second operand 7 states and 196 transitions. [2024-02-07 19:04:43,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 204 transitions, 2572 flow [2024-02-07 19:04:43,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 2497 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:43,381 INFO L231 Difference]: Finished difference. Result has 204 places, 160 transitions, 2066 flow [2024-02-07 19:04:43,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2066, PETRI_PLACES=204, PETRI_TRANSITIONS=160} [2024-02-07 19:04:43,382 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 137 predicate places. [2024-02-07 19:04:43,382 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 160 transitions, 2066 flow [2024-02-07 19:04:43,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:43,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:43,382 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 19:04:43,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-07 19:04:43,382 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:43,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash -917310595, now seen corresponding path program 24 times [2024-02-07 19:04:43,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:43,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568046393] [2024-02-07 19:04:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:43,523 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 19:04:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:43,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568046393] [2024-02-07 19:04:43,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568046393] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:43,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:43,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402112323] [2024-02-07 19:04:43,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:43,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:43,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:43,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:43,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:43,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:43,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 160 transitions, 2066 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:43,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:43,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:43,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:44,705 INFO L124 PetriNetUnfolderBase]: 6159/12350 cut-off events. [2024-02-07 19:04:44,705 INFO L125 PetriNetUnfolderBase]: For 44685/44685 co-relation queries the response was YES. [2024-02-07 19:04:44,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36849 conditions, 12350 events. 6159/12350 cut-off events. For 44685/44685 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 108278 event pairs, 3641 based on Foata normal form. 8/11884 useless extension candidates. Maximal degree in co-relation 36789. Up to 5651 conditions per place. [2024-02-07 19:04:44,840 INFO L140 encePairwiseOnDemand]: 54/61 looper letters, 171 selfloop transitions, 39 changer transitions 0/224 dead transitions. [2024-02-07 19:04:44,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 224 transitions, 2830 flow [2024-02-07 19:04:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-02-07 19:04:44,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48009367681498827 [2024-02-07 19:04:44,842 INFO L175 Difference]: Start difference. First operand has 204 places, 160 transitions, 2066 flow. Second operand 7 states and 205 transitions. [2024-02-07 19:04:44,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 224 transitions, 2830 flow [2024-02-07 19:04:45,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 224 transitions, 2757 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:45,073 INFO L231 Difference]: Finished difference. Result has 211 places, 164 transitions, 2171 flow [2024-02-07 19:04:45,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2171, PETRI_PLACES=211, PETRI_TRANSITIONS=164} [2024-02-07 19:04:45,074 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 144 predicate places. [2024-02-07 19:04:45,074 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 164 transitions, 2171 flow [2024-02-07 19:04:45,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:45,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:45,074 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 19:04:45,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-07 19:04:45,075 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:45,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:45,075 INFO L85 PathProgramCache]: Analyzing trace with hash -297472665, now seen corresponding path program 25 times [2024-02-07 19:04:45,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:45,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883195154] [2024-02-07 19:04:45,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:45,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:45,210 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 19:04:45,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:45,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883195154] [2024-02-07 19:04:45,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883195154] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:45,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:45,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:45,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023716143] [2024-02-07 19:04:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:45,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:45,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:45,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 164 transitions, 2171 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:45,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:45,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:46,683 INFO L124 PetriNetUnfolderBase]: 6193/12414 cut-off events. [2024-02-07 19:04:46,683 INFO L125 PetriNetUnfolderBase]: For 48287/48287 co-relation queries the response was YES. [2024-02-07 19:04:46,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37332 conditions, 12414 events. 6193/12414 cut-off events. For 48287/48287 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 108929 event pairs, 3481 based on Foata normal form. 8/11948 useless extension candidates. Maximal degree in co-relation 37269. Up to 5651 conditions per place. [2024-02-07 19:04:46,930 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 195 selfloop transitions, 48 changer transitions 0/257 dead transitions. [2024-02-07 19:04:46,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 257 transitions, 3079 flow [2024-02-07 19:04:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 265 transitions. [2024-02-07 19:04:46,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48269581056466304 [2024-02-07 19:04:46,935 INFO L175 Difference]: Start difference. First operand has 211 places, 164 transitions, 2171 flow. Second operand 9 states and 265 transitions. [2024-02-07 19:04:46,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 257 transitions, 3079 flow [2024-02-07 19:04:47,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 257 transitions, 2998 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:47,273 INFO L231 Difference]: Finished difference. Result has 219 places, 168 transitions, 2283 flow [2024-02-07 19:04:47,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2283, PETRI_PLACES=219, PETRI_TRANSITIONS=168} [2024-02-07 19:04:47,274 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 152 predicate places. [2024-02-07 19:04:47,274 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 168 transitions, 2283 flow [2024-02-07 19:04:47,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:47,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:47,275 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 19:04:47,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-07 19:04:47,275 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:47,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash -217499225, now seen corresponding path program 26 times [2024-02-07 19:04:47,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:47,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289005729] [2024-02-07 19:04:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289005729] [2024-02-07 19:04:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289005729] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143428483] [2024-02-07 19:04:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:47,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:47,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 168 transitions, 2283 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:47,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:47,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:47,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:48,685 INFO L124 PetriNetUnfolderBase]: 6385/12791 cut-off events. [2024-02-07 19:04:48,686 INFO L125 PetriNetUnfolderBase]: For 52017/52017 co-relation queries the response was YES. [2024-02-07 19:04:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38936 conditions, 12791 events. 6385/12791 cut-off events. For 52017/52017 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 112846 event pairs, 2201 based on Foata normal form. 8/12326 useless extension candidates. Maximal degree in co-relation 38870. Up to 5805 conditions per place. [2024-02-07 19:04:48,827 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 208 selfloop transitions, 48 changer transitions 0/270 dead transitions. [2024-02-07 19:04:48,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 270 transitions, 3344 flow [2024-02-07 19:04:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:04:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:04:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-02-07 19:04:48,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225409836065574 [2024-02-07 19:04:48,829 INFO L175 Difference]: Start difference. First operand has 219 places, 168 transitions, 2283 flow. Second operand 8 states and 255 transitions. [2024-02-07 19:04:48,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 270 transitions, 3344 flow [2024-02-07 19:04:49,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 270 transitions, 3222 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-02-07 19:04:49,323 INFO L231 Difference]: Finished difference. Result has 224 places, 180 transitions, 2526 flow [2024-02-07 19:04:49,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2526, PETRI_PLACES=224, PETRI_TRANSITIONS=180} [2024-02-07 19:04:49,323 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 157 predicate places. [2024-02-07 19:04:49,324 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 180 transitions, 2526 flow [2024-02-07 19:04:49,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:49,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:49,324 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 19:04:49,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-07 19:04:49,324 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:49,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 190444823, now seen corresponding path program 27 times [2024-02-07 19:04:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857483437] [2024-02-07 19:04:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:49,465 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 19:04:49,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:49,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857483437] [2024-02-07 19:04:49,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857483437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:49,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:49,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:49,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033133256] [2024-02-07 19:04:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:49,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:49,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:49,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:49,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 180 transitions, 2526 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:49,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:49,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:49,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:50,783 INFO L124 PetriNetUnfolderBase]: 6373/12823 cut-off events. [2024-02-07 19:04:50,784 INFO L125 PetriNetUnfolderBase]: For 52451/52451 co-relation queries the response was YES. [2024-02-07 19:04:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39148 conditions, 12823 events. 6373/12823 cut-off events. For 52451/52451 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 113251 event pairs, 3037 based on Foata normal form. 8/12362 useless extension candidates. Maximal degree in co-relation 39079. Up to 9643 conditions per place. [2024-02-07 19:04:50,912 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 201 selfloop transitions, 22 changer transitions 0/237 dead transitions. [2024-02-07 19:04:50,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 237 transitions, 3204 flow [2024-02-07 19:04:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-02-07 19:04:50,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918032786885246 [2024-02-07 19:04:50,913 INFO L175 Difference]: Start difference. First operand has 224 places, 180 transitions, 2526 flow. Second operand 7 states and 210 transitions. [2024-02-07 19:04:50,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 237 transitions, 3204 flow [2024-02-07 19:04:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 237 transitions, 3025 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-02-07 19:04:51,236 INFO L231 Difference]: Finished difference. Result has 225 places, 183 transitions, 2461 flow [2024-02-07 19:04:51,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2461, PETRI_PLACES=225, PETRI_TRANSITIONS=183} [2024-02-07 19:04:51,237 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 158 predicate places. [2024-02-07 19:04:51,237 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 183 transitions, 2461 flow [2024-02-07 19:04:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:51,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:51,237 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 19:04:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-07 19:04:51,237 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:51,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -416858577, now seen corresponding path program 28 times [2024-02-07 19:04:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162006908] [2024-02-07 19:04:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:51,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:51,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:51,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162006908] [2024-02-07 19:04:51,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162006908] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:51,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:51,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:51,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636332683] [2024-02-07 19:04:51,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:51,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:51,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:51,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:51,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:51,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:51,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 183 transitions, 2461 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:51,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:51,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:51,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:52,738 INFO L124 PetriNetUnfolderBase]: 6361/12745 cut-off events. [2024-02-07 19:04:52,738 INFO L125 PetriNetUnfolderBase]: For 44115/44115 co-relation queries the response was YES. [2024-02-07 19:04:52,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38390 conditions, 12745 events. 6361/12745 cut-off events. For 44115/44115 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 112276 event pairs, 2237 based on Foata normal form. 8/12280 useless extension candidates. Maximal degree in co-relation 38324. Up to 5805 conditions per place. [2024-02-07 19:04:52,846 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 203 selfloop transitions, 54 changer transitions 0/271 dead transitions. [2024-02-07 19:04:52,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 271 transitions, 3284 flow [2024-02-07 19:04:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:04:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:04:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2024-02-07 19:04:52,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045537340619308 [2024-02-07 19:04:52,847 INFO L175 Difference]: Start difference. First operand has 225 places, 183 transitions, 2461 flow. Second operand 9 states and 277 transitions. [2024-02-07 19:04:52,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 271 transitions, 3284 flow [2024-02-07 19:04:53,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 271 transitions, 3193 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-02-07 19:04:53,090 INFO L231 Difference]: Finished difference. Result has 230 places, 184 transitions, 2533 flow [2024-02-07 19:04:53,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2533, PETRI_PLACES=230, PETRI_TRANSITIONS=184} [2024-02-07 19:04:53,090 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 163 predicate places. [2024-02-07 19:04:53,090 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 184 transitions, 2533 flow [2024-02-07 19:04:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:53,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:53,091 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 19:04:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-07 19:04:53,091 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:53,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash 32659505, now seen corresponding path program 29 times [2024-02-07 19:04:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824523866] [2024-02-07 19:04:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:53,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:53,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:53,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824523866] [2024-02-07 19:04:53,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824523866] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:53,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:53,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:53,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574331753] [2024-02-07 19:04:53,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:53,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:53,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:53,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:53,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:53,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 61 [2024-02-07 19:04:53,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 184 transitions, 2533 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:53,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:53,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 61 [2024-02-07 19:04:53,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:54,600 INFO L124 PetriNetUnfolderBase]: 6365/12809 cut-off events. [2024-02-07 19:04:54,600 INFO L125 PetriNetUnfolderBase]: For 44164/44164 co-relation queries the response was YES. [2024-02-07 19:04:54,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38661 conditions, 12809 events. 6365/12809 cut-off events. For 44164/44164 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 113431 event pairs, 2393 based on Foata normal form. 8/12334 useless extension candidates. Maximal degree in co-relation 38594. Up to 5805 conditions per place. [2024-02-07 19:04:54,759 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 190 selfloop transitions, 41 changer transitions 0/245 dead transitions. [2024-02-07 19:04:54,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 245 transitions, 3176 flow [2024-02-07 19:04:54,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:04:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:04:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-07 19:04:54,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964871194379391 [2024-02-07 19:04:54,760 INFO L175 Difference]: Start difference. First operand has 230 places, 184 transitions, 2533 flow. Second operand 7 states and 212 transitions. [2024-02-07 19:04:54,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 245 transitions, 3176 flow [2024-02-07 19:04:55,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 245 transitions, 3003 flow, removed 15 selfloop flow, removed 19 redundant places. [2024-02-07 19:04:55,031 INFO L231 Difference]: Finished difference. Result has 217 places, 184 transitions, 2445 flow [2024-02-07 19:04:55,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2445, PETRI_PLACES=217, PETRI_TRANSITIONS=184} [2024-02-07 19:04:55,032 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 150 predicate places. [2024-02-07 19:04:55,032 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 184 transitions, 2445 flow [2024-02-07 19:04:55,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:55,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:55,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:55,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-07 19:04:55,032 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:55,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash 935612532, now seen corresponding path program 1 times [2024-02-07 19:04:55,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:55,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983926253] [2024-02-07 19:04:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:55,062 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 19:04:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:55,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983926253] [2024-02-07 19:04:55,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983926253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:55,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:55,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:55,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366629460] [2024-02-07 19:04:55,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:55,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:55,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:55,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:55,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 61 [2024-02-07 19:04:55,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 184 transitions, 2445 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:55,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:55,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 61 [2024-02-07 19:04:55,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:56,159 INFO L124 PetriNetUnfolderBase]: 6365/12640 cut-off events. [2024-02-07 19:04:56,159 INFO L125 PetriNetUnfolderBase]: For 42527/42529 co-relation queries the response was YES. [2024-02-07 19:04:56,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38305 conditions, 12640 events. 6365/12640 cut-off events. For 42527/42529 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 109876 event pairs, 5021 based on Foata normal form. 0/12156 useless extension candidates. Maximal degree in co-relation 38251. Up to 10308 conditions per place. [2024-02-07 19:04:56,279 INFO L140 encePairwiseOnDemand]: 59/61 looper letters, 169 selfloop transitions, 1 changer transitions 0/183 dead transitions. [2024-02-07 19:04:56,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 183 transitions, 2783 flow [2024-02-07 19:04:56,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:56,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-02-07 19:04:56,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098360655737705 [2024-02-07 19:04:56,280 INFO L175 Difference]: Start difference. First operand has 217 places, 184 transitions, 2445 flow. Second operand 3 states and 75 transitions. [2024-02-07 19:04:56,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 183 transitions, 2783 flow [2024-02-07 19:04:56,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 183 transitions, 2660 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-07 19:04:56,466 INFO L231 Difference]: Finished difference. Result has 211 places, 183 transitions, 2322 flow [2024-02-07 19:04:56,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2322, PETRI_PLACES=211, PETRI_TRANSITIONS=183} [2024-02-07 19:04:56,467 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 144 predicate places. [2024-02-07 19:04:56,467 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 183 transitions, 2322 flow [2024-02-07 19:04:56,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:04:56,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:56,467 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] [2024-02-07 19:04:56,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-07 19:04:56,467 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:56,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2053507179, now seen corresponding path program 1 times [2024-02-07 19:04:56,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:56,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848597019] [2024-02-07 19:04:56,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:56,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:56,584 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 19:04:56,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:56,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848597019] [2024-02-07 19:04:56,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848597019] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:56,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:56,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:56,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648894320] [2024-02-07 19:04:56,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:56,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:56,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:56,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:56,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:56,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2024-02-07 19:04:56,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 183 transitions, 2322 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 19:04:56,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:56,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2024-02-07 19:04:56,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:57,778 INFO L124 PetriNetUnfolderBase]: 7125/13114 cut-off events. [2024-02-07 19:04:57,778 INFO L125 PetriNetUnfolderBase]: For 38331/38333 co-relation queries the response was YES. [2024-02-07 19:04:57,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39547 conditions, 13114 events. 7125/13114 cut-off events. For 38331/38333 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 105255 event pairs, 2721 based on Foata normal form. 2/13070 useless extension candidates. Maximal degree in co-relation 39495. Up to 6128 conditions per place. [2024-02-07 19:04:57,905 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 122 selfloop transitions, 86 changer transitions 0/218 dead transitions. [2024-02-07 19:04:57,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 218 transitions, 2960 flow [2024-02-07 19:04:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-02-07 19:04:57,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825136612021858 [2024-02-07 19:04:57,907 INFO L175 Difference]: Start difference. First operand has 211 places, 183 transitions, 2322 flow. Second operand 6 states and 140 transitions. [2024-02-07 19:04:57,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 218 transitions, 2960 flow [2024-02-07 19:04:58,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 218 transitions, 2959 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:58,083 INFO L231 Difference]: Finished difference. Result has 216 places, 191 transitions, 2820 flow [2024-02-07 19:04:58,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2820, PETRI_PLACES=216, PETRI_TRANSITIONS=191} [2024-02-07 19:04:58,083 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 149 predicate places. [2024-02-07 19:04:58,083 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 191 transitions, 2820 flow [2024-02-07 19:04:58,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 19:04:58,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:58,084 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, 1] [2024-02-07 19:04:58,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-07 19:04:58,084 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:58,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1084722061, now seen corresponding path program 1 times [2024-02-07 19:04:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:58,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174727235] [2024-02-07 19:04:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:58,190 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 19:04:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:58,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174727235] [2024-02-07 19:04:58,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174727235] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:58,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:58,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-07 19:04:58,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754177822] [2024-02-07 19:04:58,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:58,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:58,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:58,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:58,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:58,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 19:04:58,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 191 transitions, 2820 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 19:04:58,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:58,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 19:04:58,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:59,370 INFO L124 PetriNetUnfolderBase]: 6861/12579 cut-off events. [2024-02-07 19:04:59,370 INFO L125 PetriNetUnfolderBase]: For 50437/50439 co-relation queries the response was YES. [2024-02-07 19:04:59,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40989 conditions, 12579 events. 6861/12579 cut-off events. For 50437/50439 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 100992 event pairs, 2741 based on Foata normal form. 176/12751 useless extension candidates. Maximal degree in co-relation 40935. Up to 5638 conditions per place. [2024-02-07 19:04:59,487 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 67 selfloop transitions, 14 changer transitions 125/216 dead transitions. [2024-02-07 19:04:59,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 216 transitions, 3328 flow [2024-02-07 19:04:59,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-02-07 19:04:59,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419672131147541 [2024-02-07 19:04:59,488 INFO L175 Difference]: Start difference. First operand has 216 places, 191 transitions, 2820 flow. Second operand 5 states and 128 transitions. [2024-02-07 19:04:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 216 transitions, 3328 flow [2024-02-07 19:04:59,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 3317 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:59,765 INFO L231 Difference]: Finished difference. Result has 221 places, 84 transitions, 1062 flow [2024-02-07 19:04:59,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1062, PETRI_PLACES=221, PETRI_TRANSITIONS=84} [2024-02-07 19:04:59,766 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 154 predicate places. [2024-02-07 19:04:59,766 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 84 transitions, 1062 flow [2024-02-07 19:04:59,766 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 19:04:59,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:59,766 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, 1] [2024-02-07 19:04:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-07 19:04:59,766 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:59,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash -974348935, now seen corresponding path program 2 times [2024-02-07 19:04:59,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927376575] [2024-02-07 19:04:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:04:59,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:59,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927376575] [2024-02-07 19:04:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927376575] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:59,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 19:04:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740545864] [2024-02-07 19:04:59,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:04:59,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:59,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:04:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:04:59,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 19:04:59,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 84 transitions, 1062 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 19:04:59,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:59,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 19:04:59,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:00,316 INFO L124 PetriNetUnfolderBase]: 1769/3276 cut-off events. [2024-02-07 19:05:00,317 INFO L125 PetriNetUnfolderBase]: For 16682/16684 co-relation queries the response was YES. [2024-02-07 19:05:00,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11280 conditions, 3276 events. 1769/3276 cut-off events. For 16682/16684 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20515 event pairs, 568 based on Foata normal form. 42/3310 useless extension candidates. Maximal degree in co-relation 11224. Up to 1222 conditions per place. [2024-02-07 19:05:00,341 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 41 selfloop transitions, 16 changer transitions 51/118 dead transitions. [2024-02-07 19:05:00,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 118 transitions, 1383 flow [2024-02-07 19:05:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:05:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:05:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-02-07 19:05:00,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098360655737705 [2024-02-07 19:05:00,342 INFO L175 Difference]: Start difference. First operand has 221 places, 84 transitions, 1062 flow. Second operand 7 states and 175 transitions. [2024-02-07 19:05:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 118 transitions, 1383 flow [2024-02-07 19:05:00,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 118 transitions, 1049 flow, removed 16 selfloop flow, removed 63 redundant places. [2024-02-07 19:05:00,373 INFO L231 Difference]: Finished difference. Result has 132 places, 57 transitions, 411 flow [2024-02-07 19:05:00,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=132, PETRI_TRANSITIONS=57} [2024-02-07 19:05:00,374 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 65 predicate places. [2024-02-07 19:05:00,374 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 57 transitions, 411 flow [2024-02-07 19:05:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 19:05:00,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:00,374 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, 1] [2024-02-07 19:05:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-07 19:05:00,374 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:05:00,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash -724103333, now seen corresponding path program 3 times [2024-02-07 19:05:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469535042] [2024-02-07 19:05:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:05:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:00,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469535042] [2024-02-07 19:05:00,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469535042] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:00,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:00,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-07 19:05:00,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568735516] [2024-02-07 19:05:00,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:05:00,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:05:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:05:00,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 19:05:00,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 57 transitions, 411 flow. Second operand has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 19:05:00,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:00,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 19:05:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:00,703 INFO L124 PetriNetUnfolderBase]: 616/1177 cut-off events. [2024-02-07 19:05:00,703 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-02-07 19:05:00,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3609 conditions, 1177 events. 616/1177 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5996 event pairs, 171 based on Foata normal form. 8/1174 useless extension candidates. Maximal degree in co-relation 3592. Up to 523 conditions per place. [2024-02-07 19:05:00,708 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 43 selfloop transitions, 11 changer transitions 37/102 dead transitions. [2024-02-07 19:05:00,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 740 flow [2024-02-07 19:05:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-07 19:05:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-07 19:05:00,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-02-07 19:05:00,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036885245901639 [2024-02-07 19:05:00,709 INFO L175 Difference]: Start difference. First operand has 132 places, 57 transitions, 411 flow. Second operand 8 states and 197 transitions. [2024-02-07 19:05:00,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 740 flow [2024-02-07 19:05:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 102 transitions, 626 flow, removed 7 selfloop flow, removed 17 redundant places. [2024-02-07 19:05:00,713 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 258 flow [2024-02-07 19:05:00,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2024-02-07 19:05:00,713 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 34 predicate places. [2024-02-07 19:05:00,713 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 258 flow [2024-02-07 19:05:00,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.625) internal successors, (149), 8 states have internal predecessors, (149), 0 states have call successors, (0), 0 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 19:05:00,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:00,714 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, 1] [2024-02-07 19:05:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-07 19:05:00,714 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:05:00,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:00,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1577685837, now seen corresponding path program 4 times [2024-02-07 19:05:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454458537] [2024-02-07 19:05:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:00,829 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 19:05:00,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454458537] [2024-02-07 19:05:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454458537] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:00,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 19:05:00,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272488315] [2024-02-07 19:05:00,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-07 19:05:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-07 19:05:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-02-07 19:05:00,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 19:05:00,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 19:05:00,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:00,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 19:05:00,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:01,028 INFO L124 PetriNetUnfolderBase]: 446/832 cut-off events. [2024-02-07 19:05:01,028 INFO L125 PetriNetUnfolderBase]: For 724/724 co-relation queries the response was YES. [2024-02-07 19:05:01,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 832 events. 446/832 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3692 event pairs, 183 based on Foata normal form. 8/832 useless extension candidates. Maximal degree in co-relation 2354. Up to 345 conditions per place. [2024-02-07 19:05:01,033 INFO L140 encePairwiseOnDemand]: 55/61 looper letters, 36 selfloop transitions, 2 changer transitions 39/87 dead transitions. [2024-02-07 19:05:01,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 87 transitions, 533 flow [2024-02-07 19:05:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:05:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:05:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-02-07 19:05:01,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981264637002342 [2024-02-07 19:05:01,034 INFO L175 Difference]: Start difference. First operand has 101 places, 50 transitions, 258 flow. Second operand 7 states and 170 transitions. [2024-02-07 19:05:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 87 transitions, 533 flow [2024-02-07 19:05:01,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 498 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-02-07 19:05:01,037 INFO L231 Difference]: Finished difference. Result has 85 places, 41 transitions, 168 flow [2024-02-07 19:05:01,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=85, PETRI_TRANSITIONS=41} [2024-02-07 19:05:01,037 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 18 predicate places. [2024-02-07 19:05:01,038 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 41 transitions, 168 flow [2024-02-07 19:05:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 19:05:01,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:05:01,038 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, 1] [2024-02-07 19:05:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-07 19:05:01,038 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:05:01,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:05:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1025130733, now seen corresponding path program 5 times [2024-02-07 19:05:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:05:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140490304] [2024-02-07 19:05:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:05:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:05:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:05:01,140 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 19:05:01,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:05:01,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140490304] [2024-02-07 19:05:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140490304] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:05:01,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:05:01,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-07 19:05:01,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010418242] [2024-02-07 19:05:01,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:05:01,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-07 19:05:01,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:05:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-07 19:05:01,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-02-07 19:05:01,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 61 [2024-02-07 19:05:01,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 41 transitions, 168 flow. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 19:05:01,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:05:01,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 61 [2024-02-07 19:05:01,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:05:01,265 INFO L124 PetriNetUnfolderBase]: 224/422 cut-off events. [2024-02-07 19:05:01,266 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-02-07 19:05:01,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 422 events. 224/422 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1492 event pairs, 36 based on Foata normal form. 8/428 useless extension candidates. Maximal degree in co-relation 1192. Up to 244 conditions per place. [2024-02-07 19:05:01,267 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2024-02-07 19:05:01,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 284 flow [2024-02-07 19:05:01,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:05:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:05:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-02-07 19:05:01,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36065573770491804 [2024-02-07 19:05:01,268 INFO L175 Difference]: Start difference. First operand has 85 places, 41 transitions, 168 flow. Second operand 6 states and 132 transitions. [2024-02-07 19:05:01,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 284 flow [2024-02-07 19:05:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 52 transitions, 243 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-02-07 19:05:01,269 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-02-07 19:05:01,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-02-07 19:05:01,269 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2024-02-07 19:05:01,269 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-02-07 19:05:01,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 19:05:01,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-02-07 19:05:01,272 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (17 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-02-07 19:05:01,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-02-07 19:05:01,274 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-02-07 19:05:01,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-02-07 19:05:01,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-02-07 19:05:01,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-02-07 19:05:01,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-02-07 19:05:01,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-07 19:05:01,275 INFO L445 BasicCegarLoop]: Path program histogram: [29, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:05:01,279 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:05:01,279 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:05:01,283 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-02-07 19:05:01,283 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-02-07 19:05:01,284 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:05:01 BasicIcfg [2024-02-07 19:05:01,284 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:05:01,285 INFO L158 Benchmark]: Toolchain (without parser) took 62960.85ms. Allocated memory was 165.7MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 138.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-02-07 19:05:01,285 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:05:01,285 INFO L158 Benchmark]: Witness Parser took 0.08ms. Allocated memory is still 165.7MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:05:01,285 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.83ms. Allocated memory is still 165.7MB. Free memory was 138.0MB in the beginning and 107.5MB in the end (delta: 30.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-07 19:05:01,285 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.59ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:05:01,286 INFO L158 Benchmark]: Boogie Preprocessor took 55.80ms. Allocated memory is still 165.7MB. Free memory was 105.4MB in the beginning and 102.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 19:05:01,286 INFO L158 Benchmark]: RCFGBuilder took 672.12ms. Allocated memory is still 165.7MB. Free memory was 102.9MB in the beginning and 118.9MB in the end (delta: -16.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2024-02-07 19:05:01,286 INFO L158 Benchmark]: TraceAbstraction took 61517.63ms. Allocated memory was 165.7MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 118.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-02-07 19:05:01,287 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 139.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.08ms. Allocated memory is still 165.7MB. Free memory is still 138.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 664.83ms. Allocated memory is still 165.7MB. Free memory was 138.0MB in the beginning and 107.5MB in the end (delta: 30.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.59ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.80ms. Allocated memory is still 165.7MB. Free memory was 105.4MB in the beginning and 102.9MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 672.12ms. Allocated memory is still 165.7MB. Free memory was 102.9MB in the beginning and 118.9MB in the end (delta: -16.0MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * TraceAbstraction took 61517.63ms. Allocated memory was 165.7MB in the beginning and 2.6GB in the end (delta: 2.5GB). Free memory was 118.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 724]: 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, 39 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: 61.4s, OverallIterations: 54, TraceHistogramMax: 1, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 53.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2847 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2804 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 145 mSDsCounter, 135 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9156 IncrementalHoareTripleChecker+Invalid, 9291 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 135 mSolverCounterUnsat, 3 mSDtfsCounter, 9156 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2820occurred in iteration=49, InterpolantAutomatonStates: 343, 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, 6.6s InterpolantComputationTime, 1270 NumberOfCodeBlocks, 1270 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1216 ConstructedInterpolants, 0 QuantifiedInterpolants, 9985 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 54 InterpolantComputations, 54 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 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 19:05:01,315 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