./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/safe033_tso.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:43:28,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:43:29,035 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:43:29,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:43:29,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:43:29,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:43:29,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:43:29,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:43:29,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:43:29,096 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:43:29,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:43:29,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:43:29,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:43:29,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:43:29,099 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:43:29,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:43:29,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:43:29,103 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:43:29,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:43:29,103 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:43:29,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:43:29,104 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:43:29,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:43:29,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:43:29,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:43:29,105 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:43:29,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:43:29,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:43:29,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:43:29,106 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:43:29,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:43:29,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:43:29,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:43:29,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:43:29,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:43:29,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:43:29,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:43:29,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:43:29,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:43:29,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:43:29,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:43:29,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:43:29,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:43:29,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:43:29,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:43:29,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:43:29,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:43:29,328 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:43:29,328 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:43:29,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/safe033_tso.yml/witness.yml [2024-05-12 10:43:29,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:43:29,472 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:43:29,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-05-12 10:43:30,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:43:30,830 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:43:30,831 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-05-12 10:43:30,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbb16eef/b622969b316d4516a7f3806d780ebc3a/FLAGda18e2c50 [2024-05-12 10:43:30,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcbb16eef/b622969b316d4516a7f3806d780ebc3a [2024-05-12 10:43:30,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:43:30,858 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:43:30,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:43:30,859 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:43:30,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:43:30,863 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:43:29" (1/2) ... [2024-05-12 10:43:30,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664ddc86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:43:30, skipping insertion in model container [2024-05-12 10:43:30,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:43:29" (1/2) ... [2024-05-12 10:43:30,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@255906b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:43:30, skipping insertion in model container [2024-05-12 10:43:30,865 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:43:30" (2/2) ... [2024-05-12 10:43:30,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664ddc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:30, skipping insertion in model container [2024-05-12 10:43:30,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:43:30" (2/2) ... [2024-05-12 10:43:30,866 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:43:30,889 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:43:30,891 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((((((((((((((long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (2LL + (long long )__unbuffered_p0_EAX) - (long long )y >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (2LL + (long long )x) - (long long )y >= 0LL))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= x) && 0 <= y) && __unbuffered_p0_EAX <= 1) && x <= 1) && y <= 2) && y <= 127) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 10:43:30,891 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] (((((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((((((((((((((long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )x + (long long )y >= 0LL) && (2LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (2LL + (long long )__unbuffered_p0_EAX) - (long long )y >= 0LL) && (2LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (2LL + (long long )x) - (long long )y >= 0LL))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= x) && 0 <= y) && __unbuffered_p0_EAX <= 1) && x <= 1) && y <= 2) && y <= 127) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-05-12 10:43:30,891 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:43:30,891 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-05-12 10:43:30,927 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:43:31,063 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] [2024-05-12 10:43:31,144 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:43:31,150 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 10:43:31,179 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:43:31,245 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:43:31,285 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:43:31,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31 WrapperNode [2024-05-12 10:43:31,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:43:31,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:43:31,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:43:31,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:43:31,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,329 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-05-12 10:43:31,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:43:31,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:43:31,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:43:31,331 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:43:31,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,383 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 10:43:31,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,384 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,406 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,408 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:43:31,409 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:43:31,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:43:31,414 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:43:31,415 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (1/1) ... [2024-05-12 10:43:31,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:43:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:43:31,446 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) [2024-05-12 10:43:31,448 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 [2024-05-12 10:43:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:43:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:43:31,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:43:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 10:43:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:43:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:43:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:43:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 10:43:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 10:43:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 10:43:31,481 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 10:43:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:43:31,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:43:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:43:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 10:43:31,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:43:31,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:43:31,484 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:43:31,570 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:43:31,572 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:43:31,754 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:43:31,754 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:43:31,808 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:43:31,808 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:43:31,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:43:31 BoogieIcfgContainer [2024-05-12 10:43:31,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:43:31,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:43:31,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:43:31,813 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:43:31,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:43:29" (1/4) ... [2024-05-12 10:43:31,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14387198 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:43:31, skipping insertion in model container [2024-05-12 10:43:31,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:43:30" (2/4) ... [2024-05-12 10:43:31,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14387198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:43:31, skipping insertion in model container [2024-05-12 10:43:31,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:43:31" (3/4) ... [2024-05-12 10:43:31,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14387198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:43:31, skipping insertion in model container [2024-05-12 10:43:31,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:43:31" (4/4) ... [2024-05-12 10:43:31,816 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-05-12 10:43:31,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:43:31,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 10:43:31,830 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:43:31,883 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 10:43:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-05-12 10:43:31,950 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-05-12 10:43:31,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:43:31,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-05-12 10:43:31,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-05-12 10:43:31,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 68 flow [2024-05-12 10:43:31,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:43:31,993 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;@73cb71e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:43:32,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 10:43:32,025 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:43:32,025 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 10:43:32,025 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:43:32,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:32,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 10:43:32,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:32,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1391271451, now seen corresponding path program 1 times [2024-05-12 10:43:32,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:32,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950629217] [2024-05-12 10:43:32,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:32,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:32,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:32,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950629217] [2024-05-12 10:43:32,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950629217] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:32,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:43:32,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844047873] [2024-05-12 10:43:32,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:32,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:43:32,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:43:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:43:32,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-05-12 10:43:32,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:32,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:32,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-05-12 10:43:32,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:32,686 INFO L124 PetriNetUnfolderBase]: 145/303 cut-off events. [2024-05-12 10:43:32,687 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 10:43:32,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 303 events. 145/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1426 event pairs, 59 based on Foata normal form. 1/285 useless extension candidates. Maximal degree in co-relation 565. Up to 253 conditions per place. [2024-05-12 10:43:32,691 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 24 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-05-12 10:43:32,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 141 flow [2024-05-12 10:43:32,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:43:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:43:32,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-05-12 10:43:32,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-05-12 10:43:32,702 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 68 flow. Second operand 3 states and 74 transitions. [2024-05-12 10:43:32,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 141 flow [2024-05-12 10:43:32,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:43:32,706 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 87 flow [2024-05-12 10:43:32,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-05-12 10:43:32,710 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-05-12 10:43:32,711 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 87 flow [2024-05-12 10:43:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:32,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:32,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:32,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:43:32,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:32,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1277042682, now seen corresponding path program 1 times [2024-05-12 10:43:32,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230568606] [2024-05-12 10:43:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:32,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:32,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:32,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230568606] [2024-05-12 10:43:32,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230568606] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:32,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:32,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:43:32,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641012776] [2024-05-12 10:43:32,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:32,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:43:32,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:32,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:43:32,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:43:32,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-05-12 10:43:32,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:32,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:32,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-05-12 10:43:32,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:33,056 INFO L124 PetriNetUnfolderBase]: 142/298 cut-off events. [2024-05-12 10:43:33,060 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-05-12 10:43:33,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 298 events. 142/298 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1399 event pairs, 46 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 631. Up to 235 conditions per place. [2024-05-12 10:43:33,066 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 30 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-05-12 10:43:33,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 191 flow [2024-05-12 10:43:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:43:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:43:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-05-12 10:43:33,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2024-05-12 10:43:33,070 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 87 flow. Second operand 4 states and 97 transitions. [2024-05-12 10:43:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 191 flow [2024-05-12 10:43:33,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:43:33,075 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 111 flow [2024-05-12 10:43:33,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-05-12 10:43:33,076 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-05-12 10:43:33,077 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 111 flow [2024-05-12 10:43:33,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:33,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:33,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:33,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:43:33,078 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:33,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash -456136566, now seen corresponding path program 1 times [2024-05-12 10:43:33,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:33,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88207879] [2024-05-12 10:43:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:33,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88207879] [2024-05-12 10:43:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88207879] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:43:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924751507] [2024-05-12 10:43:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:43:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:43:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:43:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:33,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:33,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:33,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:33,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:33,418 INFO L124 PetriNetUnfolderBase]: 181/365 cut-off events. [2024-05-12 10:43:33,419 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-05-12 10:43:33,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 365 events. 181/365 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1770 event pairs, 70 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 854. Up to 306 conditions per place. [2024-05-12 10:43:33,421 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 30 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-05-12 10:43:33,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 207 flow [2024-05-12 10:43:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:43:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:43:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-05-12 10:43:33,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-05-12 10:43:33,422 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 111 flow. Second operand 4 states and 90 transitions. [2024-05-12 10:43:33,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 207 flow [2024-05-12 10:43:33,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 198 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 10:43:33,424 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 127 flow [2024-05-12 10:43:33,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-05-12 10:43:33,430 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2024-05-12 10:43:33,430 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 127 flow [2024-05-12 10:43:33,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:33,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:33,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:33,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:43:33,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:33,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash -800962632, now seen corresponding path program 1 times [2024-05-12 10:43:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:33,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202764954] [2024-05-12 10:43:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:33,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:33,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202764954] [2024-05-12 10:43:33,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202764954] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:33,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:33,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:43:33,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226906213] [2024-05-12 10:43:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:43:33,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:43:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:43:33,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:33,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:33,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:33,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:33,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:33,711 INFO L124 PetriNetUnfolderBase]: 177/376 cut-off events. [2024-05-12 10:43:33,711 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-05-12 10:43:33,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 376 events. 177/376 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1816 event pairs, 44 based on Foata normal form. 4/374 useless extension candidates. Maximal degree in co-relation 899. Up to 253 conditions per place. [2024-05-12 10:43:33,714 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 41 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2024-05-12 10:43:33,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 275 flow [2024-05-12 10:43:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:43:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:43:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 10:43:33,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2024-05-12 10:43:33,719 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 127 flow. Second operand 6 states and 133 transitions. [2024-05-12 10:43:33,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 275 flow [2024-05-12 10:43:33,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 266 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 10:43:33,722 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 143 flow [2024-05-12 10:43:33,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-05-12 10:43:33,724 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-05-12 10:43:33,724 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 143 flow [2024-05-12 10:43:33,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:33,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:33,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:43:33,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:33,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:33,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1286611551, now seen corresponding path program 1 times [2024-05-12 10:43:33,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:33,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613694136] [2024-05-12 10:43:33,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:33,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:33,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613694136] [2024-05-12 10:43:33,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613694136] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:33,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:33,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:43:33,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381344637] [2024-05-12 10:43:33,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:43:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:43:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:43:33,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:33,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:33,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:33,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:33,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:34,006 INFO L124 PetriNetUnfolderBase]: 183/371 cut-off events. [2024-05-12 10:43:34,006 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-05-12 10:43:34,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 371 events. 183/371 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1757 event pairs, 30 based on Foata normal form. 2/372 useless extension candidates. Maximal degree in co-relation 983. Up to 260 conditions per place. [2024-05-12 10:43:34,008 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-05-12 10:43:34,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 331 flow [2024-05-12 10:43:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-05-12 10:43:34,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-05-12 10:43:34,010 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 143 flow. Second operand 7 states and 152 transitions. [2024-05-12 10:43:34,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 331 flow [2024-05-12 10:43:34,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 315 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 10:43:34,012 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 196 flow [2024-05-12 10:43:34,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-05-12 10:43:34,013 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2024-05-12 10:43:34,013 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 196 flow [2024-05-12 10:43:34,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:34,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:34,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:43:34,014 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:34,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 230037573, now seen corresponding path program 1 times [2024-05-12 10:43:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:34,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397594073] [2024-05-12 10:43:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:34,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:34,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:34,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397594073] [2024-05-12 10:43:34,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397594073] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:34,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:34,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:43:34,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067618591] [2024-05-12 10:43:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:43:34,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:43:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:43:34,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:34,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:34,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:34,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:34,287 INFO L124 PetriNetUnfolderBase]: 190/392 cut-off events. [2024-05-12 10:43:34,287 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2024-05-12 10:43:34,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 392 events. 190/392 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1908 event pairs, 34 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1170. Up to 264 conditions per place. [2024-05-12 10:43:34,290 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 40 selfloop transitions, 14 changer transitions 0/65 dead transitions. [2024-05-12 10:43:34,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 371 flow [2024-05-12 10:43:34,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:43:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:43:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-05-12 10:43:34,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-05-12 10:43:34,292 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 196 flow. Second operand 6 states and 135 transitions. [2024-05-12 10:43:34,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 371 flow [2024-05-12 10:43:34,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 347 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-05-12 10:43:34,295 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 220 flow [2024-05-12 10:43:34,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-05-12 10:43:34,296 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2024-05-12 10:43:34,296 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 220 flow [2024-05-12 10:43:34,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:34,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:34,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:43:34,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:34,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash -228389327, now seen corresponding path program 2 times [2024-05-12 10:43:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:34,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005896314] [2024-05-12 10:43:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:34,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005896314] [2024-05-12 10:43:34,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005896314] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:34,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:34,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:43:34,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621330986] [2024-05-12 10:43:34,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:34,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:43:34,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:43:34,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:43:34,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:34,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:34,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:34,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:34,552 INFO L124 PetriNetUnfolderBase]: 185/377 cut-off events. [2024-05-12 10:43:34,552 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2024-05-12 10:43:34,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 377 events. 185/377 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1801 event pairs, 31 based on Foata normal form. 2/378 useless extension candidates. Maximal degree in co-relation 1155. Up to 259 conditions per place. [2024-05-12 10:43:34,555 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2024-05-12 10:43:34,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 378 flow [2024-05-12 10:43:34,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:34,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-05-12 10:43:34,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-05-12 10:43:34,556 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 220 flow. Second operand 7 states and 152 transitions. [2024-05-12 10:43:34,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 378 flow [2024-05-12 10:43:34,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 67 transitions, 357 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 10:43:34,558 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 234 flow [2024-05-12 10:43:34,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-05-12 10:43:34,559 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2024-05-12 10:43:34,559 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 234 flow [2024-05-12 10:43:34,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:34,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:34,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:43:34,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:34,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash 516902784, now seen corresponding path program 1 times [2024-05-12 10:43:34,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:34,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452322287] [2024-05-12 10:43:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:34,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452322287] [2024-05-12 10:43:34,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452322287] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:34,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:34,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292089286] [2024-05-12 10:43:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:34,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:34,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:34,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:34,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:34,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:34,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:34,892 INFO L124 PetriNetUnfolderBase]: 192/402 cut-off events. [2024-05-12 10:43:34,892 INFO L125 PetriNetUnfolderBase]: For 845/845 co-relation queries the response was YES. [2024-05-12 10:43:34,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 402 events. 192/402 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1957 event pairs, 31 based on Foata normal form. 4/405 useless extension candidates. Maximal degree in co-relation 1224. Up to 244 conditions per place. [2024-05-12 10:43:34,895 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 44 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-05-12 10:43:34,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 414 flow [2024-05-12 10:43:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:34,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-05-12 10:43:34,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-05-12 10:43:34,896 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 234 flow. Second operand 8 states and 170 transitions. [2024-05-12 10:43:34,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 414 flow [2024-05-12 10:43:34,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 375 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:34,899 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 240 flow [2024-05-12 10:43:34,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=240, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-05-12 10:43:34,900 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-05-12 10:43:34,900 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 240 flow [2024-05-12 10:43:34,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:34,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:34,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:34,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 10:43:34,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:34,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2018028068, now seen corresponding path program 1 times [2024-05-12 10:43:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173967291] [2024-05-12 10:43:34,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:34,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:35,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:35,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:35,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173967291] [2024-05-12 10:43:35,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173967291] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:35,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:35,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:35,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068119006] [2024-05-12 10:43:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:35,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:35,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:35,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:35,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:35,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:35,220 INFO L124 PetriNetUnfolderBase]: 199/412 cut-off events. [2024-05-12 10:43:35,221 INFO L125 PetriNetUnfolderBase]: For 873/873 co-relation queries the response was YES. [2024-05-12 10:43:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 412 events. 199/412 cut-off events. For 873/873 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2049 event pairs, 43 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 1298. Up to 309 conditions per place. [2024-05-12 10:43:35,224 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 50 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-05-12 10:43:35,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 416 flow [2024-05-12 10:43:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:43:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:43:35,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 10:43:35,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157407407407407 [2024-05-12 10:43:35,225 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 240 flow. Second operand 6 states and 133 transitions. [2024-05-12 10:43:35,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 416 flow [2024-05-12 10:43:35,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 377 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:35,228 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 238 flow [2024-05-12 10:43:35,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=238, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2024-05-12 10:43:35,229 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2024-05-12 10:43:35,229 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 238 flow [2024-05-12 10:43:35,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:35,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:35,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 10:43:35,230 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:35,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2022789668, now seen corresponding path program 2 times [2024-05-12 10:43:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:35,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778141688] [2024-05-12 10:43:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778141688] [2024-05-12 10:43:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778141688] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:35,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:35,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:35,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452003475] [2024-05-12 10:43:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:35,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:35,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:35,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:35,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:35,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:35,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:35,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:35,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:35,484 INFO L124 PetriNetUnfolderBase]: 215/444 cut-off events. [2024-05-12 10:43:35,484 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2024-05-12 10:43:35,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 444 events. 215/444 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2248 event pairs, 30 based on Foata normal form. 1/444 useless extension candidates. Maximal degree in co-relation 1387. Up to 244 conditions per place. [2024-05-12 10:43:35,486 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 46 selfloop transitions, 22 changer transitions 0/79 dead transitions. [2024-05-12 10:43:35,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 502 flow [2024-05-12 10:43:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 10:43:35,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-05-12 10:43:35,488 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 238 flow. Second operand 7 states and 158 transitions. [2024-05-12 10:43:35,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 502 flow [2024-05-12 10:43:35,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 481 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 10:43:35,491 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 314 flow [2024-05-12 10:43:35,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-05-12 10:43:35,492 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2024-05-12 10:43:35,492 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 314 flow [2024-05-12 10:43:35,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:35,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:35,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 10:43:35,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:35,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1106447580, now seen corresponding path program 3 times [2024-05-12 10:43:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076628864] [2024-05-12 10:43:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:35,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076628864] [2024-05-12 10:43:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076628864] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:35,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:35,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791017381] [2024-05-12 10:43:35,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:35,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:35,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:35,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 314 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:35,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:35,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:35,780 INFO L124 PetriNetUnfolderBase]: 211/440 cut-off events. [2024-05-12 10:43:35,780 INFO L125 PetriNetUnfolderBase]: For 1286/1286 co-relation queries the response was YES. [2024-05-12 10:43:35,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 440 events. 211/440 cut-off events. For 1286/1286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2222 event pairs, 32 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 1453. Up to 241 conditions per place. [2024-05-12 10:43:35,783 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 50 selfloop transitions, 20 changer transitions 0/81 dead transitions. [2024-05-12 10:43:35,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 528 flow [2024-05-12 10:43:35,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:35,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-05-12 10:43:35,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6076388888888888 [2024-05-12 10:43:35,784 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 314 flow. Second operand 8 states and 175 transitions. [2024-05-12 10:43:35,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 528 flow [2024-05-12 10:43:35,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 500 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 10:43:35,789 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 332 flow [2024-05-12 10:43:35,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=332, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-05-12 10:43:35,790 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2024-05-12 10:43:35,790 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 332 flow [2024-05-12 10:43:35,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:35,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:35,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 10:43:35,790 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:35,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:35,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1723535605, now seen corresponding path program 1 times [2024-05-12 10:43:35,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:35,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897163384] [2024-05-12 10:43:35,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:35,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897163384] [2024-05-12 10:43:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897163384] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:35,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:35,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:35,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882133341] [2024-05-12 10:43:35,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:35,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:35,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:35,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:35,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:35,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:35,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:35,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:35,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:35,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:36,077 INFO L124 PetriNetUnfolderBase]: 218/459 cut-off events. [2024-05-12 10:43:36,077 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2024-05-12 10:43:36,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 459 events. 218/459 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2373 event pairs, 32 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 1582. Up to 286 conditions per place. [2024-05-12 10:43:36,080 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 46 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-05-12 10:43:36,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 76 transitions, 520 flow [2024-05-12 10:43:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:43:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:43:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 10:43:36,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-05-12 10:43:36,081 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 332 flow. Second operand 6 states and 136 transitions. [2024-05-12 10:43:36,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 76 transitions, 520 flow [2024-05-12 10:43:36,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 455 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-05-12 10:43:36,085 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 338 flow [2024-05-12 10:43:36,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-05-12 10:43:36,087 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2024-05-12 10:43:36,087 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 338 flow [2024-05-12 10:43:36,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:36,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:36,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 10:43:36,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:36,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 81132165, now seen corresponding path program 2 times [2024-05-12 10:43:36,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:36,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678925540] [2024-05-12 10:43:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:36,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:36,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:36,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678925540] [2024-05-12 10:43:36,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678925540] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:36,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:36,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:36,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391332901] [2024-05-12 10:43:36,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:36,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:36,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:36,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:36,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:36,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:36,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 338 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:36,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:36,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:36,384 INFO L124 PetriNetUnfolderBase]: 225/469 cut-off events. [2024-05-12 10:43:36,384 INFO L125 PetriNetUnfolderBase]: For 1558/1558 co-relation queries the response was YES. [2024-05-12 10:43:36,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1642 conditions, 469 events. 225/469 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2396 event pairs, 30 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 1613. Up to 257 conditions per place. [2024-05-12 10:43:36,387 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 47 selfloop transitions, 27 changer transitions 0/85 dead transitions. [2024-05-12 10:43:36,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 582 flow [2024-05-12 10:43:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-05-12 10:43:36,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-05-12 10:43:36,388 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 338 flow. Second operand 8 states and 174 transitions. [2024-05-12 10:43:36,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 582 flow [2024-05-12 10:43:36,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 539 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:36,393 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 374 flow [2024-05-12 10:43:36,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=374, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-05-12 10:43:36,394 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2024-05-12 10:43:36,394 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 374 flow [2024-05-12 10:43:36,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:36,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:36,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 10:43:36,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:36,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1530649251, now seen corresponding path program 3 times [2024-05-12 10:43:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:36,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406137451] [2024-05-12 10:43:36,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:36,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:36,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406137451] [2024-05-12 10:43:36,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406137451] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:36,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053553497] [2024-05-12 10:43:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:36,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:36,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:36,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:36,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 374 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:36,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:36,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:36,679 INFO L124 PetriNetUnfolderBase]: 223/469 cut-off events. [2024-05-12 10:43:36,679 INFO L125 PetriNetUnfolderBase]: For 1600/1600 co-relation queries the response was YES. [2024-05-12 10:43:36,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1652 conditions, 469 events. 223/469 cut-off events. For 1600/1600 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2399 event pairs, 31 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 1623. Up to 255 conditions per place. [2024-05-12 10:43:36,682 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 48 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2024-05-12 10:43:36,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 84 transitions, 572 flow [2024-05-12 10:43:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-05-12 10:43:36,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6006944444444444 [2024-05-12 10:43:36,683 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 374 flow. Second operand 8 states and 173 transitions. [2024-05-12 10:43:36,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 84 transitions, 572 flow [2024-05-12 10:43:36,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 506 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:36,688 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 364 flow [2024-05-12 10:43:36,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-05-12 10:43:36,689 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2024-05-12 10:43:36,689 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 364 flow [2024-05-12 10:43:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:36,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:36,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 10:43:36,689 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:36,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:36,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1482141985, now seen corresponding path program 1 times [2024-05-12 10:43:36,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:36,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48120021] [2024-05-12 10:43:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:36,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48120021] [2024-05-12 10:43:36,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48120021] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:36,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:36,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:36,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344707365] [2024-05-12 10:43:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:36,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:36,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:36,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:36,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:36,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:36,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:36,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:36,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:36,966 INFO L124 PetriNetUnfolderBase]: 233/495 cut-off events. [2024-05-12 10:43:36,966 INFO L125 PetriNetUnfolderBase]: For 1822/1822 co-relation queries the response was YES. [2024-05-12 10:43:36,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 495 events. 233/495 cut-off events. For 1822/1822 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2614 event pairs, 35 based on Foata normal form. 2/496 useless extension candidates. Maximal degree in co-relation 1675. Up to 325 conditions per place. [2024-05-12 10:43:36,970 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 60 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-05-12 10:43:36,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 574 flow [2024-05-12 10:43:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-05-12 10:43:36,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-05-12 10:43:36,971 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 364 flow. Second operand 8 states and 171 transitions. [2024-05-12 10:43:36,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 574 flow [2024-05-12 10:43:36,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 509 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:36,976 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 341 flow [2024-05-12 10:43:36,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=341, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-05-12 10:43:36,976 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2024-05-12 10:43:36,976 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 341 flow [2024-05-12 10:43:36,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:36,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:36,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:36,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 10:43:36,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:36,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1472618785, now seen corresponding path program 2 times [2024-05-12 10:43:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009431880] [2024-05-12 10:43:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:36,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:37,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:37,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009431880] [2024-05-12 10:43:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009431880] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:37,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:37,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759054715] [2024-05-12 10:43:37,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:37,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:37,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:37,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:37,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:37,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:37,293 INFO L124 PetriNetUnfolderBase]: 230/488 cut-off events. [2024-05-12 10:43:37,293 INFO L125 PetriNetUnfolderBase]: For 1678/1678 co-relation queries the response was YES. [2024-05-12 10:43:37,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 488 events. 230/488 cut-off events. For 1678/1678 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2576 event pairs, 28 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 1591. Up to 274 conditions per place. [2024-05-12 10:43:37,297 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 60 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2024-05-12 10:43:37,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 549 flow [2024-05-12 10:43:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-05-12 10:43:37,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5868055555555556 [2024-05-12 10:43:37,298 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 341 flow. Second operand 8 states and 169 transitions. [2024-05-12 10:43:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 549 flow [2024-05-12 10:43:37,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 87 transitions, 517 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:37,303 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 345 flow [2024-05-12 10:43:37,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=345, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-05-12 10:43:37,304 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2024-05-12 10:43:37,304 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 345 flow [2024-05-12 10:43:37,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:37,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:37,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 10:43:37,305 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:37,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash -536485239, now seen corresponding path program 1 times [2024-05-12 10:43:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726372054] [2024-05-12 10:43:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726372054] [2024-05-12 10:43:37,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726372054] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:37,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:37,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:43:37,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510427795] [2024-05-12 10:43:37,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:37,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:43:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:37,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:43:37,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:43:37,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 36 [2024-05-12 10:43:37,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:37,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 36 [2024-05-12 10:43:37,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:37,466 INFO L124 PetriNetUnfolderBase]: 125/363 cut-off events. [2024-05-12 10:43:37,467 INFO L125 PetriNetUnfolderBase]: For 633/634 co-relation queries the response was YES. [2024-05-12 10:43:37,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 363 events. 125/363 cut-off events. For 633/634 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1872 event pairs, 8 based on Foata normal form. 20/350 useless extension candidates. Maximal degree in co-relation 937. Up to 126 conditions per place. [2024-05-12 10:43:37,469 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 22 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-05-12 10:43:37,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 449 flow [2024-05-12 10:43:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:43:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:43:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-05-12 10:43:37,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-05-12 10:43:37,470 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 345 flow. Second operand 4 states and 104 transitions. [2024-05-12 10:43:37,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 449 flow [2024-05-12 10:43:37,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 413 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:37,473 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 375 flow [2024-05-12 10:43:37,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=375, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-05-12 10:43:37,473 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-05-12 10:43:37,473 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 375 flow [2024-05-12 10:43:37,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:37,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 10:43:37,474 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:37,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1724503791, now seen corresponding path program 1 times [2024-05-12 10:43:37,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:37,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540079851] [2024-05-12 10:43:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:37,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540079851] [2024-05-12 10:43:37,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540079851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:37,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:37,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:37,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097672913] [2024-05-12 10:43:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:43:37,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:43:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:43:37,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:37,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:37,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:37,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:37,778 INFO L124 PetriNetUnfolderBase]: 200/454 cut-off events. [2024-05-12 10:43:37,779 INFO L125 PetriNetUnfolderBase]: For 1959/1959 co-relation queries the response was YES. [2024-05-12 10:43:37,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 454 events. 200/454 cut-off events. For 1959/1959 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2324 event pairs, 68 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 1532. Up to 328 conditions per place. [2024-05-12 10:43:37,781 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 58 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-05-12 10:43:37,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 563 flow [2024-05-12 10:43:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-05-12 10:43:37,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-05-12 10:43:37,783 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 375 flow. Second operand 7 states and 144 transitions. [2024-05-12 10:43:37,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 563 flow [2024-05-12 10:43:37,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 80 transitions, 545 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 10:43:37,787 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 391 flow [2024-05-12 10:43:37,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-05-12 10:43:37,787 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2024-05-12 10:43:37,787 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 391 flow [2024-05-12 10:43:37,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:37,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:37,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:37,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 10:43:37,788 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:37,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash 34661713, now seen corresponding path program 2 times [2024-05-12 10:43:37,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:37,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226369979] [2024-05-12 10:43:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:37,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226369979] [2024-05-12 10:43:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226369979] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:37,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:37,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198524797] [2024-05-12 10:43:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:37,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:38,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:38,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 391 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:38,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:38,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:38,136 INFO L124 PetriNetUnfolderBase]: 211/508 cut-off events. [2024-05-12 10:43:38,136 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2024-05-12 10:43:38,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 508 events. 211/508 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2624 event pairs, 37 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 1703. Up to 302 conditions per place. [2024-05-12 10:43:38,139 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 61 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2024-05-12 10:43:38,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 603 flow [2024-05-12 10:43:38,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-05-12 10:43:38,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659722222222222 [2024-05-12 10:43:38,140 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 391 flow. Second operand 8 states and 163 transitions. [2024-05-12 10:43:38,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 603 flow [2024-05-12 10:43:38,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 579 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:38,145 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 407 flow [2024-05-12 10:43:38,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=407, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-05-12 10:43:38,145 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2024-05-12 10:43:38,145 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 407 flow [2024-05-12 10:43:38,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:38,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:38,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 10:43:38,146 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:38,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash 39843119, now seen corresponding path program 3 times [2024-05-12 10:43:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099824841] [2024-05-12 10:43:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:38,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:38,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:38,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099824841] [2024-05-12 10:43:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099824841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:38,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201642482] [2024-05-12 10:43:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:38,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 407 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:38,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:38,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:38,449 INFO L124 PetriNetUnfolderBase]: 222/508 cut-off events. [2024-05-12 10:43:38,449 INFO L125 PetriNetUnfolderBase]: For 2518/2518 co-relation queries the response was YES. [2024-05-12 10:43:38,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 508 events. 222/508 cut-off events. For 2518/2518 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2681 event pairs, 71 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 1805. Up to 330 conditions per place. [2024-05-12 10:43:38,453 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 41 selfloop transitions, 27 changer transitions 0/80 dead transitions. [2024-05-12 10:43:38,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 593 flow [2024-05-12 10:43:38,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-05-12 10:43:38,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-05-12 10:43:38,454 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 407 flow. Second operand 8 states and 165 transitions. [2024-05-12 10:43:38,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 593 flow [2024-05-12 10:43:38,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 563 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:38,459 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 449 flow [2024-05-12 10:43:38,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=449, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2024-05-12 10:43:38,459 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 46 predicate places. [2024-05-12 10:43:38,459 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 449 flow [2024-05-12 10:43:38,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:38,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:38,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 10:43:38,460 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:38,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1855781123, now seen corresponding path program 4 times [2024-05-12 10:43:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883609176] [2024-05-12 10:43:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883609176] [2024-05-12 10:43:38,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883609176] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:38,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:38,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541883274] [2024-05-12 10:43:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:38,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:38,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:38,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 449 flow. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:38,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:38,745 INFO L124 PetriNetUnfolderBase]: 253/585 cut-off events. [2024-05-12 10:43:38,745 INFO L125 PetriNetUnfolderBase]: For 4007/4007 co-relation queries the response was YES. [2024-05-12 10:43:38,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 585 events. 253/585 cut-off events. For 4007/4007 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3292 event pairs, 91 based on Foata normal form. 10/554 useless extension candidates. Maximal degree in co-relation 1990. Up to 319 conditions per place. [2024-05-12 10:43:38,749 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 47 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2024-05-12 10:43:38,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 647 flow [2024-05-12 10:43:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:38,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:38,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-05-12 10:43:38,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2024-05-12 10:43:38,750 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 449 flow. Second operand 9 states and 184 transitions. [2024-05-12 10:43:38,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 647 flow [2024-05-12 10:43:38,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 84 transitions, 585 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:38,755 INFO L231 Difference]: Finished difference. Result has 87 places, 65 transitions, 442 flow [2024-05-12 10:43:38,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=442, PETRI_PLACES=87, PETRI_TRANSITIONS=65} [2024-05-12 10:43:38,756 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 49 predicate places. [2024-05-12 10:43:38,756 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 65 transitions, 442 flow [2024-05-12 10:43:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:38,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:38,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 10:43:38,757 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:38,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1966101778, now seen corresponding path program 1 times [2024-05-12 10:43:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676273427] [2024-05-12 10:43:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:38,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:38,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676273427] [2024-05-12 10:43:38,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676273427] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:38,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:38,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:38,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873260144] [2024-05-12 10:43:38,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:38,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:38,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:38,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:38,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:38,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 65 transitions, 442 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:38,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:38,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:38,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:39,090 INFO L124 PetriNetUnfolderBase]: 320/750 cut-off events. [2024-05-12 10:43:39,090 INFO L125 PetriNetUnfolderBase]: For 5043/5043 co-relation queries the response was YES. [2024-05-12 10:43:39,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 750 events. 320/750 cut-off events. For 5043/5043 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4687 event pairs, 82 based on Foata normal form. 6/712 useless extension candidates. Maximal degree in co-relation 2509. Up to 280 conditions per place. [2024-05-12 10:43:39,095 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 61 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-05-12 10:43:39,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 720 flow [2024-05-12 10:43:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:43:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:43:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-05-12 10:43:39,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-05-12 10:43:39,096 INFO L175 Difference]: Start difference. First operand has 87 places, 65 transitions, 442 flow. Second operand 8 states and 171 transitions. [2024-05-12 10:43:39,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 720 flow [2024-05-12 10:43:39,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 665 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:39,103 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 428 flow [2024-05-12 10:43:39,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2024-05-12 10:43:39,103 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 50 predicate places. [2024-05-12 10:43:39,103 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 428 flow [2024-05-12 10:43:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:39,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:39,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 10:43:39,104 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:39,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:39,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1877388148, now seen corresponding path program 2 times [2024-05-12 10:43:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102666059] [2024-05-12 10:43:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:39,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:39,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:39,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102666059] [2024-05-12 10:43:39,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102666059] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:39,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:39,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:39,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721089409] [2024-05-12 10:43:39,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:39,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:39,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:39,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:39,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:39,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:39,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:39,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:39,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:39,430 INFO L124 PetriNetUnfolderBase]: 340/807 cut-off events. [2024-05-12 10:43:39,431 INFO L125 PetriNetUnfolderBase]: For 5403/5403 co-relation queries the response was YES. [2024-05-12 10:43:39,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2625 conditions, 807 events. 340/807 cut-off events. For 5403/5403 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5209 event pairs, 158 based on Foata normal form. 8/765 useless extension candidates. Maximal degree in co-relation 2586. Up to 515 conditions per place. [2024-05-12 10:43:39,435 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 49 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-05-12 10:43:39,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 82 transitions, 618 flow [2024-05-12 10:43:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-05-12 10:43:39,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-05-12 10:43:39,437 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 428 flow. Second operand 7 states and 150 transitions. [2024-05-12 10:43:39,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 82 transitions, 618 flow [2024-05-12 10:43:39,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 581 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 10:43:39,444 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 440 flow [2024-05-12 10:43:39,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2024-05-12 10:43:39,444 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2024-05-12 10:43:39,445 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 440 flow [2024-05-12 10:43:39,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:39,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 10:43:39,445 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:39,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -356892320, now seen corresponding path program 3 times [2024-05-12 10:43:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:39,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641206573] [2024-05-12 10:43:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:39,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:39,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641206573] [2024-05-12 10:43:39,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641206573] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:39,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:39,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:39,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229337805] [2024-05-12 10:43:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:39,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:39,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:39,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:39,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:39,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 440 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:39,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:39,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:39,790 INFO L124 PetriNetUnfolderBase]: 333/790 cut-off events. [2024-05-12 10:43:39,790 INFO L125 PetriNetUnfolderBase]: For 4058/4058 co-relation queries the response was YES. [2024-05-12 10:43:39,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2492 conditions, 790 events. 333/790 cut-off events. For 4058/4058 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5064 event pairs, 133 based on Foata normal form. 6/746 useless extension candidates. Maximal degree in co-relation 2452. Up to 390 conditions per place. [2024-05-12 10:43:39,795 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 57 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-05-12 10:43:39,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 656 flow [2024-05-12 10:43:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-05-12 10:43:39,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2024-05-12 10:43:39,796 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 440 flow. Second operand 7 states and 151 transitions. [2024-05-12 10:43:39,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 656 flow [2024-05-12 10:43:39,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 609 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:39,804 INFO L231 Difference]: Finished difference. Result has 89 places, 65 transitions, 432 flow [2024-05-12 10:43:39,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=89, PETRI_TRANSITIONS=65} [2024-05-12 10:43:39,804 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 51 predicate places. [2024-05-12 10:43:39,804 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 65 transitions, 432 flow [2024-05-12 10:43:39,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:39,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:39,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 10:43:39,805 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:39,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1758483316, now seen corresponding path program 4 times [2024-05-12 10:43:39,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:39,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202061088] [2024-05-12 10:43:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:39,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202061088] [2024-05-12 10:43:39,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202061088] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:39,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:39,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:39,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039072730] [2024-05-12 10:43:39,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:39,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:39,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:39,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:39,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 65 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:39,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:39,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:39,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:40,108 INFO L124 PetriNetUnfolderBase]: 367/884 cut-off events. [2024-05-12 10:43:40,109 INFO L125 PetriNetUnfolderBase]: For 4602/4602 co-relation queries the response was YES. [2024-05-12 10:43:40,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 884 events. 367/884 cut-off events. For 4602/4602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5959 event pairs, 196 based on Foata normal form. 8/835 useless extension candidates. Maximal degree in co-relation 2666. Up to 587 conditions per place. [2024-05-12 10:43:40,113 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 47 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2024-05-12 10:43:40,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 630 flow [2024-05-12 10:43:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-05-12 10:43:40,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-05-12 10:43:40,115 INFO L175 Difference]: Start difference. First operand has 89 places, 65 transitions, 432 flow. Second operand 9 states and 182 transitions. [2024-05-12 10:43:40,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 630 flow [2024-05-12 10:43:40,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 84 transitions, 595 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 10:43:40,122 INFO L231 Difference]: Finished difference. Result has 93 places, 65 transitions, 451 flow [2024-05-12 10:43:40,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=451, PETRI_PLACES=93, PETRI_TRANSITIONS=65} [2024-05-12 10:43:40,122 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 55 predicate places. [2024-05-12 10:43:40,122 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 65 transitions, 451 flow [2024-05-12 10:43:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 10:43:40,123 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:40,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1696490252, now seen corresponding path program 5 times [2024-05-12 10:43:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94230019] [2024-05-12 10:43:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:40,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:40,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94230019] [2024-05-12 10:43:40,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94230019] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:40,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416569548] [2024-05-12 10:43:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:40,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:40,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:40,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 65 transitions, 451 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:40,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:40,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:40,463 INFO L124 PetriNetUnfolderBase]: 420/1025 cut-off events. [2024-05-12 10:43:40,464 INFO L125 PetriNetUnfolderBase]: For 5877/5877 co-relation queries the response was YES. [2024-05-12 10:43:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 1025 events. 420/1025 cut-off events. For 5877/5877 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7262 event pairs, 224 based on Foata normal form. 6/969 useless extension candidates. Maximal degree in co-relation 3140. Up to 427 conditions per place. [2024-05-12 10:43:40,470 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 53 selfloop transitions, 25 changer transitions 0/90 dead transitions. [2024-05-12 10:43:40,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 723 flow [2024-05-12 10:43:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:40,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-05-12 10:43:40,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771604938271605 [2024-05-12 10:43:40,471 INFO L175 Difference]: Start difference. First operand has 93 places, 65 transitions, 451 flow. Second operand 9 states and 187 transitions. [2024-05-12 10:43:40,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 723 flow [2024-05-12 10:43:40,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 675 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:40,481 INFO L231 Difference]: Finished difference. Result has 95 places, 65 transitions, 457 flow [2024-05-12 10:43:40,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=457, PETRI_PLACES=95, PETRI_TRANSITIONS=65} [2024-05-12 10:43:40,481 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 57 predicate places. [2024-05-12 10:43:40,482 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 65 transitions, 457 flow [2024-05-12 10:43:40,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:40,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:40,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 10:43:40,482 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:40,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2080493454, now seen corresponding path program 6 times [2024-05-12 10:43:40,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:40,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554179459] [2024-05-12 10:43:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:40,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:40,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554179459] [2024-05-12 10:43:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554179459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:40,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:40,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:40,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391970890] [2024-05-12 10:43:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:40,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:40,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:40,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 65 transitions, 457 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:40,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:40,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:40,783 INFO L124 PetriNetUnfolderBase]: 410/995 cut-off events. [2024-05-12 10:43:40,784 INFO L125 PetriNetUnfolderBase]: For 4818/4818 co-relation queries the response was YES. [2024-05-12 10:43:40,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 995 events. 410/995 cut-off events. For 4818/4818 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7037 event pairs, 235 based on Foata normal form. 8/940 useless extension candidates. Maximal degree in co-relation 2936. Up to 688 conditions per place. [2024-05-12 10:43:40,790 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 45 selfloop transitions, 27 changer transitions 0/84 dead transitions. [2024-05-12 10:43:40,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 84 transitions, 655 flow [2024-05-12 10:43:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-05-12 10:43:40,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-05-12 10:43:40,791 INFO L175 Difference]: Start difference. First operand has 95 places, 65 transitions, 457 flow. Second operand 9 states and 182 transitions. [2024-05-12 10:43:40,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 84 transitions, 655 flow [2024-05-12 10:43:40,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 84 transitions, 607 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:40,800 INFO L231 Difference]: Finished difference. Result has 97 places, 65 transitions, 467 flow [2024-05-12 10:43:40,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=467, PETRI_PLACES=97, PETRI_TRANSITIONS=65} [2024-05-12 10:43:40,800 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 59 predicate places. [2024-05-12 10:43:40,801 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 65 transitions, 467 flow [2024-05-12 10:43:40,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:40,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 10:43:40,801 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:40,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2012909920, now seen corresponding path program 1 times [2024-05-12 10:43:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071898898] [2024-05-12 10:43:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:40,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:40,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071898898] [2024-05-12 10:43:40,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071898898] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:40,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:40,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:40,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316013079] [2024-05-12 10:43:40,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:40,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:40,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:40,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 65 transitions, 467 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:40,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:40,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:40,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:41,149 INFO L124 PetriNetUnfolderBase]: 433/1053 cut-off events. [2024-05-12 10:43:41,149 INFO L125 PetriNetUnfolderBase]: For 4631/4631 co-relation queries the response was YES. [2024-05-12 10:43:41,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1053 events. 433/1053 cut-off events. For 4631/4631 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7629 event pairs, 226 based on Foata normal form. 6/998 useless extension candidates. Maximal degree in co-relation 3101. Up to 490 conditions per place. [2024-05-12 10:43:41,159 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 49 selfloop transitions, 28 changer transitions 0/89 dead transitions. [2024-05-12 10:43:41,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 695 flow [2024-05-12 10:43:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-05-12 10:43:41,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-05-12 10:43:41,161 INFO L175 Difference]: Start difference. First operand has 97 places, 65 transitions, 467 flow. Second operand 9 states and 186 transitions. [2024-05-12 10:43:41,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 695 flow [2024-05-12 10:43:41,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 643 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:41,170 INFO L231 Difference]: Finished difference. Result has 99 places, 65 transitions, 474 flow [2024-05-12 10:43:41,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=99, PETRI_TRANSITIONS=65} [2024-05-12 10:43:41,173 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2024-05-12 10:43:41,174 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 65 transitions, 474 flow [2024-05-12 10:43:41,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:41,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:41,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:41,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 10:43:41,174 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:41,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1590708798, now seen corresponding path program 2 times [2024-05-12 10:43:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:41,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314199734] [2024-05-12 10:43:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:41,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:41,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:41,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314199734] [2024-05-12 10:43:41,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314199734] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:41,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977112626] [2024-05-12 10:43:41,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:41,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:41,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:41,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 65 transitions, 474 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:41,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:41,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:41,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:41,547 INFO L124 PetriNetUnfolderBase]: 456/1133 cut-off events. [2024-05-12 10:43:41,548 INFO L125 PetriNetUnfolderBase]: For 4993/4993 co-relation queries the response was YES. [2024-05-12 10:43:41,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 1133 events. 456/1133 cut-off events. For 4993/4993 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8382 event pairs, 270 based on Foata normal form. 6/1074 useless extension candidates. Maximal degree in co-relation 3306. Up to 703 conditions per place. [2024-05-12 10:43:41,554 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 52 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-05-12 10:43:41,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 89 transitions, 702 flow [2024-05-12 10:43:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-05-12 10:43:41,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-05-12 10:43:41,555 INFO L175 Difference]: Start difference. First operand has 99 places, 65 transitions, 474 flow. Second operand 9 states and 188 transitions. [2024-05-12 10:43:41,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 89 transitions, 702 flow [2024-05-12 10:43:41,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 89 transitions, 647 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:41,566 INFO L231 Difference]: Finished difference. Result has 101 places, 65 transitions, 472 flow [2024-05-12 10:43:41,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=472, PETRI_PLACES=101, PETRI_TRANSITIONS=65} [2024-05-12 10:43:41,568 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 63 predicate places. [2024-05-12 10:43:41,568 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 65 transitions, 472 flow [2024-05-12 10:43:41,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:41,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:41,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:41,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 10:43:41,569 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:41,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2142397890, now seen corresponding path program 3 times [2024-05-12 10:43:41,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:41,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868386173] [2024-05-12 10:43:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:41,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868386173] [2024-05-12 10:43:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868386173] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:41,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:41,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580727574] [2024-05-12 10:43:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 10:43:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 10:43:41,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 10:43:41,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-05-12 10:43:41,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 65 transitions, 472 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:41,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:41,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-05-12 10:43:41,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:41,913 INFO L124 PetriNetUnfolderBase]: 449/1107 cut-off events. [2024-05-12 10:43:41,914 INFO L125 PetriNetUnfolderBase]: For 3385/3385 co-relation queries the response was YES. [2024-05-12 10:43:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 1107 events. 449/1107 cut-off events. For 3385/3385 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8207 event pairs, 246 based on Foata normal form. 6/1050 useless extension candidates. Maximal degree in co-relation 3115. Up to 666 conditions per place. [2024-05-12 10:43:41,918 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 56 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-05-12 10:43:41,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 90 transitions, 650 flow [2024-05-12 10:43:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 10:43:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 10:43:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-05-12 10:43:41,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709876543209876 [2024-05-12 10:43:41,919 INFO L175 Difference]: Start difference. First operand has 101 places, 65 transitions, 472 flow. Second operand 9 states and 185 transitions. [2024-05-12 10:43:41,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 90 transitions, 650 flow [2024-05-12 10:43:41,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 90 transitions, 517 flow, removed 5 selfloop flow, removed 33 redundant places. [2024-05-12 10:43:41,925 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 333 flow [2024-05-12 10:43:41,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=333, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-05-12 10:43:41,925 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2024-05-12 10:43:41,926 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 333 flow [2024-05-12 10:43:41,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:41,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:41,926 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] [2024-05-12 10:43:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 10:43:41,926 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:41,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1414511834, now seen corresponding path program 1 times [2024-05-12 10:43:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:41,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891457208] [2024-05-12 10:43:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:41,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:41,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891457208] [2024-05-12 10:43:41,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891457208] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:41,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:43:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220191175] [2024-05-12 10:43:41,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:41,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:43:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:41,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:43:41,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:43:42,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 36 [2024-05-12 10:43:42,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:42,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 36 [2024-05-12 10:43:42,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:42,074 INFO L124 PetriNetUnfolderBase]: 328/978 cut-off events. [2024-05-12 10:43:42,074 INFO L125 PetriNetUnfolderBase]: For 583/625 co-relation queries the response was YES. [2024-05-12 10:43:42,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2306 conditions, 978 events. 328/978 cut-off events. For 583/625 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7046 event pairs, 15 based on Foata normal form. 70/990 useless extension candidates. Maximal degree in co-relation 2287. Up to 312 conditions per place. [2024-05-12 10:43:42,077 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 22 selfloop transitions, 17 changer transitions 0/74 dead transitions. [2024-05-12 10:43:42,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 435 flow [2024-05-12 10:43:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:43:42,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:43:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-05-12 10:43:42,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-05-12 10:43:42,078 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 333 flow. Second operand 5 states and 125 transitions. [2024-05-12 10:43:42,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 435 flow [2024-05-12 10:43:42,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 392 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 10:43:42,080 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 352 flow [2024-05-12 10:43:42,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-05-12 10:43:42,080 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 36 predicate places. [2024-05-12 10:43:42,080 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 352 flow [2024-05-12 10:43:42,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:42,081 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] [2024-05-12 10:43:42,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 10:43:42,081 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:42,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:42,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1496914051, now seen corresponding path program 1 times [2024-05-12 10:43:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:42,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179075135] [2024-05-12 10:43:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179075135] [2024-05-12 10:43:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179075135] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 10:43:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516119700] [2024-05-12 10:43:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:42,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:43:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:43:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:43:42,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2024-05-12 10:43:42,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:42,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2024-05-12 10:43:42,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:42,253 INFO L124 PetriNetUnfolderBase]: 266/837 cut-off events. [2024-05-12 10:43:42,253 INFO L125 PetriNetUnfolderBase]: For 663/663 co-relation queries the response was YES. [2024-05-12 10:43:42,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 837 events. 266/837 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6181 event pairs, 110 based on Foata normal form. 28/767 useless extension candidates. Maximal degree in co-relation 2161. Up to 241 conditions per place. [2024-05-12 10:43:42,255 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 16 selfloop transitions, 3 changer transitions 35/75 dead transitions. [2024-05-12 10:43:42,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 456 flow [2024-05-12 10:43:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:43:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:43:42,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-05-12 10:43:42,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-05-12 10:43:42,257 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 352 flow. Second operand 5 states and 118 transitions. [2024-05-12 10:43:42,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 456 flow [2024-05-12 10:43:42,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:43:42,259 INFO L231 Difference]: Finished difference. Result has 79 places, 38 transitions, 181 flow [2024-05-12 10:43:42,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=79, PETRI_TRANSITIONS=38} [2024-05-12 10:43:42,260 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2024-05-12 10:43:42,260 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 38 transitions, 181 flow [2024-05-12 10:43:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:43:42,261 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] [2024-05-12 10:43:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 10:43:42,261 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 10:43:42,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:43:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash -588191667, now seen corresponding path program 2 times [2024-05-12 10:43:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:43:42,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44101603] [2024-05-12 10:43:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:43:42,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:43:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:43:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:43:42,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:43:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44101603] [2024-05-12 10:43:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44101603] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:43:42,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:43:42,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 10:43:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338309772] [2024-05-12 10:43:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:43:42,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 10:43:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:43:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 10:43:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-05-12 10:43:42,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 36 [2024-05-12 10:43:42,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 38 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:43:42,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 36 [2024-05-12 10:43:42,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:43:42,465 INFO L124 PetriNetUnfolderBase]: 81/252 cut-off events. [2024-05-12 10:43:42,465 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-05-12 10:43:42,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 252 events. 81/252 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1202 event pairs, 27 based on Foata normal form. 12/236 useless extension candidates. Maximal degree in co-relation 703. Up to 109 conditions per place. [2024-05-12 10:43:42,466 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-05-12 10:43:42,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 43 transitions, 243 flow [2024-05-12 10:43:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:43:42,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:43:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-05-12 10:43:42,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436507936507936 [2024-05-12 10:43:42,467 INFO L175 Difference]: Start difference. First operand has 79 places, 38 transitions, 181 flow. Second operand 7 states and 137 transitions. [2024-05-12 10:43:42,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 43 transitions, 243 flow [2024-05-12 10:43:42,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 210 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-05-12 10:43:42,468 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2024-05-12 10:43:42,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2024-05-12 10:43:42,468 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2024-05-12 10:43:42,468 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2024-05-12 10:43:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:43:42,470 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 10:43:42,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 10:43:42,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 10:43:42,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 10:43:42,471 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 10:43:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 10:43:42,471 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:43:42,474 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:43:42,474 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:43:42,476 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 10:43:42,476 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 10:43:42,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:43:42 BasicIcfg [2024-05-12 10:43:42,477 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:43:42,477 INFO L158 Benchmark]: Toolchain (without parser) took 11619.18ms. Allocated memory was 205.5MB in the beginning and 524.3MB in the end (delta: 318.8MB). Free memory was 174.0MB in the beginning and 258.4MB in the end (delta: -84.4MB). Peak memory consumption was 234.2MB. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 136.3MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory was 106.9MB in the beginning and 106.7MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.73ms. Allocated memory is still 205.5MB. Free memory was 174.0MB in the beginning and 146.7MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.55ms. Allocated memory is still 205.5MB. Free memory was 146.7MB in the beginning and 144.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: Boogie Preprocessor took 77.76ms. Allocated memory is still 205.5MB. Free memory was 144.6MB in the beginning and 141.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: RCFGBuilder took 400.39ms. Allocated memory is still 205.5MB. Free memory was 141.6MB in the beginning and 115.3MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 10:43:42,478 INFO L158 Benchmark]: TraceAbstraction took 10666.56ms. Allocated memory was 205.5MB in the beginning and 524.3MB in the end (delta: 318.8MB). Free memory was 114.4MB in the beginning and 258.4MB in the end (delta: -144.0MB). Peak memory consumption was 175.5MB. Max. memory is 16.1GB. [2024-05-12 10:43:42,479 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 136.3MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 136.3MB. Free memory was 106.9MB in the beginning and 106.7MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.73ms. Allocated memory is still 205.5MB. Free memory was 174.0MB in the beginning and 146.7MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.55ms. Allocated memory is still 205.5MB. Free memory was 146.7MB in the beginning and 144.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.76ms. Allocated memory is still 205.5MB. Free memory was 144.6MB in the beginning and 141.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 400.39ms. Allocated memory is still 205.5MB. Free memory was 141.6MB in the beginning and 115.3MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10666.56ms. Allocated memory was 205.5MB in the beginning and 524.3MB in the end (delta: 318.8MB). Free memory was 114.4MB in the beginning and 258.4MB in the end (delta: -144.0MB). Peak memory consumption was 175.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 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 5 procedures, 53 locations, 5 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: 10.6s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1773 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1418 mSDsluCounter, 513 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5358 IncrementalHoareTripleChecker+Invalid, 5477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 186 mSDtfsCounter, 5358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=474occurred in iteration=28, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 535 NumberOfCodeBlocks, 535 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 502 ConstructedInterpolants, 0 QuantifiedInterpolants, 3713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 10:43:42,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE