./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe029_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/safe029_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/safe029_power.oepc_pso.oepc_rmo.oepc.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 15:43:49,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:43:49,273 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:43:49,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:43:49,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:43:49,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:43:49,316 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:43:49,316 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:43:49,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:43:49,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:43:49,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:43:49,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:43:49,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:43:49,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:43:49,326 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:43:49,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:43:49,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:43:49,327 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:43:49,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:43:49,327 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:43:49,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:43:49,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:43:49,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:43:49,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:43:49,329 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:43:49,329 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:43:49,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:43:49,330 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:43:49,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:43:49,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:43:49,332 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:43:49,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:43:49,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:43:49,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:43:49,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:43:49,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:43:49,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:43:49,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:43:49,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:43:49,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:43:49,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:43:49,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:43:49,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:43:49,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:43:49,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:43:49,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:43:49,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:43:49,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:43:49,612 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:43:49,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:43:50,811 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:43:51,048 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:43:51,048 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:43:51,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfbaaa1d3/53db663c2f374c298d232810dcff85d2/FLAG0b06f6c82 [2024-06-04 15:43:51,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfbaaa1d3/53db663c2f374c298d232810dcff85d2 [2024-06-04 15:43:51,080 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:43:51,080 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:43:51,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe029_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-04 15:43:51,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:43:51,243 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:43:51,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:43:51,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:43:51,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:43:51,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:43:51" (1/2) ... [2024-06-04 15:43:51,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699709e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:43:51, skipping insertion in model container [2024-06-04 15:43:51,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:43:51" (1/2) ... [2024-06-04 15:43:51,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a757846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:43:51, skipping insertion in model container [2024-06-04 15:43:51,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:43:51" (2/2) ... [2024-06-04 15:43:51,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699709e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51, skipping insertion in model container [2024-06-04 15:43:51,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:43:51" (2/2) ... [2024-06-04 15:43:51,253 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:43:51,344 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:43:51,345 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] ((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) [2024-06-04 15:43:51,345 INFO L97 edCorrectnessWitness]: Location invariant before [L794-L794] ((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2))) [2024-06-04 15:43:51,345 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:43:51,345 INFO L106 edCorrectnessWitness]: ghost_update [L791-L791] multithreaded = 1; [2024-06-04 15:43:51,379 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:43:51,715 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:43:51,729 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:43:51,837 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:43:51,873 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:43:51,874 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51 WrapperNode [2024-06-04 15:43:51,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:43:51,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:43:51,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:43:51,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:43:51,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,948 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2024-06-04 15:43:51,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:43:51,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:43:51,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:43:51,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:43:51,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,978 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 15:43:51,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,988 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:51,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:43:51,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:43:51,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:43:51,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:43:51,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (1/1) ... [2024-06-04 15:43:52,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:43:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:43:52,028 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) [2024-06-04 15:43:52,032 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 [2024-06-04 15:43:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:43:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:43:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:43:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:43:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:43:52,055 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 15:43:52,165 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:43:52,167 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:43:52,463 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:43:52,463 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:43:52,627 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:43:52,628 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:43:52,630 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:43:52 BoogieIcfgContainer [2024-06-04 15:43:52,630 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:43:52,633 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:43:52,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:43:52,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:43:52,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:43:51" (1/4) ... [2024-06-04 15:43:52,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a13e5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:43:52, skipping insertion in model container [2024-06-04 15:43:52,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:43:51" (2/4) ... [2024-06-04 15:43:52,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a13e5a9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:43:52, skipping insertion in model container [2024-06-04 15:43:52,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:43:51" (3/4) ... [2024-06-04 15:43:52,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a13e5a9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:43:52, skipping insertion in model container [2024-06-04 15:43:52,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:43:52" (4/4) ... [2024-06-04 15:43:52,640 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.oepc_pso.oepc_rmo.oepc.i [2024-06-04 15:43:52,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:43:52,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:43:52,656 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:43:52,700 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:43:52,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-04 15:43:52,780 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-04 15:43:52,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:43:52,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:43:52,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-04 15:43:52,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-04 15:43:52,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:43:52,804 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;@33ef626b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:43:52,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:43:52,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:43:52,810 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-04 15:43:52,810 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:43:52,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:52,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:43:52,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:52,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:52,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1350958641, now seen corresponding path program 1 times [2024-06-04 15:43:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:52,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101656335] [2024-06-04 15:43:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:53,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:53,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101656335] [2024-06-04 15:43:53,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101656335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:53,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:53,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:43:53,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919807990] [2024-06-04 15:43:53,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:53,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:43:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:53,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:43:53,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:43:54,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:43:54,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:54,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:54,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:43:54,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:54,173 INFO L124 PetriNetUnfolderBase]: 162/297 cut-off events. [2024-06-04 15:43:54,173 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 15:43:54,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 297 events. 162/297 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1018 event pairs, 97 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 596. Up to 288 conditions per place. [2024-06-04 15:43:54,180 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 23 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-04 15:43:54,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 117 flow [2024-06-04 15:43:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:43:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:43:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-06-04 15:43:54,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-04 15:43:54,192 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 46 transitions. [2024-06-04 15:43:54,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 117 flow [2024-06-04 15:43:54,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:43:54,196 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-04 15:43:54,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-04 15:43:54,201 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-04 15:43:54,201 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-04 15:43:54,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:54,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:54,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:43:54,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:54,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:54,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1191162640, now seen corresponding path program 1 times [2024-06-04 15:43:54,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:54,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568407641] [2024-06-04 15:43:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:54,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:54,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568407641] [2024-06-04 15:43:54,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568407641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:54,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:54,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:43:54,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640908085] [2024-06-04 15:43:54,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:54,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:43:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:43:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:43:54,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:43:54,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:54,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:54,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:43:54,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:54,914 INFO L124 PetriNetUnfolderBase]: 159/292 cut-off events. [2024-06-04 15:43:54,914 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-04 15:43:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 292 events. 159/292 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1009 event pairs, 79 based on Foata normal form. 2/294 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-04 15:43:54,921 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 27 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-04 15:43:54,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 159 flow [2024-06-04 15:43:54,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:43:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:43:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-06-04 15:43:54,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-04 15:43:54,924 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 58 transitions. [2024-06-04 15:43:54,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 159 flow [2024-06-04 15:43:54,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:43:54,929 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-04 15:43:54,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-04 15:43:54,930 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-04 15:43:54,930 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-04 15:43:54,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:54,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:54,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:54,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:43:54,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:54,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1728662762, now seen corresponding path program 1 times [2024-06-04 15:43:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:54,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887898359] [2024-06-04 15:43:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:54,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:55,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887898359] [2024-06-04 15:43:55,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887898359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:55,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:55,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:43:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346397651] [2024-06-04 15:43:55,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:55,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:43:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:43:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:43:55,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:43:55,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:55,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:55,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:43:55,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:55,652 INFO L124 PetriNetUnfolderBase]: 160/294 cut-off events. [2024-06-04 15:43:55,653 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-06-04 15:43:55,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 294 events. 160/294 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1016 event pairs, 56 based on Foata normal form. 3/297 useless extension candidates. Maximal degree in co-relation 744. Up to 248 conditions per place. [2024-06-04 15:43:55,656 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-04 15:43:55,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 251 flow [2024-06-04 15:43:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:43:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:43:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-04 15:43:55,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-04 15:43:55,659 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 76 transitions. [2024-06-04 15:43:55,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 251 flow [2024-06-04 15:43:55,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:43:55,663 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 160 flow [2024-06-04 15:43:55,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-04 15:43:55,664 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-04 15:43:55,665 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 160 flow [2024-06-04 15:43:55,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:55,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:55,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:55,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:43:55,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:55,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2048936977, now seen corresponding path program 1 times [2024-06-04 15:43:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:55,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765151931] [2024-06-04 15:43:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:56,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:56,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765151931] [2024-06-04 15:43:56,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765151931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:56,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:56,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:43:56,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646958640] [2024-06-04 15:43:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:56,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:43:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:56,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:43:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:43:56,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:43:56,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:56,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:56,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:43:56,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:56,683 INFO L124 PetriNetUnfolderBase]: 179/326 cut-off events. [2024-06-04 15:43:56,683 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-06-04 15:43:56,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 326 events. 179/326 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1162 event pairs, 40 based on Foata normal form. 5/331 useless extension candidates. Maximal degree in co-relation 975. Up to 204 conditions per place. [2024-06-04 15:43:56,686 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 47 selfloop transitions, 19 changer transitions 0/68 dead transitions. [2024-06-04 15:43:56,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 68 transitions, 406 flow [2024-06-04 15:43:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:43:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:43:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-04 15:43:56,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-04 15:43:56,688 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 160 flow. Second operand 6 states and 98 transitions. [2024-06-04 15:43:56,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 68 transitions, 406 flow [2024-06-04 15:43:56,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 402 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-04 15:43:56,692 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 275 flow [2024-06-04 15:43:56,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-06-04 15:43:56,693 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-04 15:43:56,693 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 275 flow [2024-06-04 15:43:56,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:56,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:56,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:56,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:43:56,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:56,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1764554869, now seen corresponding path program 1 times [2024-06-04 15:43:56,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:56,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86371771] [2024-06-04 15:43:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86371771] [2024-06-04 15:43:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86371771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:57,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:57,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:43:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724820639] [2024-06-04 15:43:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:57,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:43:57,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:57,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:43:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:43:57,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-04 15:43:57,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:57,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:57,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-04 15:43:57,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:57,695 INFO L124 PetriNetUnfolderBase]: 180/329 cut-off events. [2024-06-04 15:43:57,696 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-06-04 15:43:57,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 329 events. 180/329 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1178 event pairs, 27 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 1213. Up to 244 conditions per place. [2024-06-04 15:43:57,699 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-04 15:43:57,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 468 flow [2024-06-04 15:43:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:43:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:43:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-04 15:43:57,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-04 15:43:57,701 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 275 flow. Second operand 7 states and 97 transitions. [2024-06-04 15:43:57,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 468 flow [2024-06-04 15:43:57,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 456 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-04 15:43:57,707 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 309 flow [2024-06-04 15:43:57,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-04 15:43:57,708 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-04 15:43:57,708 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 309 flow [2024-06-04 15:43:57,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:57,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:57,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:43:57,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:57,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash 288827368, now seen corresponding path program 1 times [2024-06-04 15:43:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:57,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046919132] [2024-06-04 15:43:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046919132] [2024-06-04 15:43:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046919132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:58,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:58,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:43:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910895741] [2024-06-04 15:43:58,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:58,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:43:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:43:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:43:58,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:43:58,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 309 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:58,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:58,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:43:58,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:58,489 INFO L124 PetriNetUnfolderBase]: 178/326 cut-off events. [2024-06-04 15:43:58,489 INFO L125 PetriNetUnfolderBase]: For 843/843 co-relation queries the response was YES. [2024-06-04 15:43:58,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 326 events. 178/326 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1181 event pairs, 43 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1306. Up to 314 conditions per place. [2024-06-04 15:43:58,494 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 43 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-04 15:43:58,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 419 flow [2024-06-04 15:43:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:43:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:43:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-06-04 15:43:58,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-04 15:43:58,497 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 309 flow. Second operand 5 states and 54 transitions. [2024-06-04 15:43:58,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 419 flow [2024-06-04 15:43:58,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 382 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 15:43:58,501 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 289 flow [2024-06-04 15:43:58,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-04 15:43:58,503 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-04 15:43:58,503 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 289 flow [2024-06-04 15:43:58,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:58,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:58,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:58,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:43:58,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash 362820704, now seen corresponding path program 1 times [2024-06-04 15:43:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:58,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621628867] [2024-06-04 15:43:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:58,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621628867] [2024-06-04 15:43:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621628867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:43:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321527827] [2024-06-04 15:43:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:43:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:43:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:43:59,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:43:59,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 289 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:59,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:59,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:43:59,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:43:59,329 INFO L124 PetriNetUnfolderBase]: 174/320 cut-off events. [2024-06-04 15:43:59,329 INFO L125 PetriNetUnfolderBase]: For 935/935 co-relation queries the response was YES. [2024-06-04 15:43:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 320 events. 174/320 cut-off events. For 935/935 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1124 event pairs, 41 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 1244. Up to 302 conditions per place. [2024-06-04 15:43:59,332 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 43 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-04 15:43:59,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 407 flow [2024-06-04 15:43:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:43:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:43:59,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-04 15:43:59,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:43:59,334 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 289 flow. Second operand 6 states and 63 transitions. [2024-06-04 15:43:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 407 flow [2024-06-04 15:43:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 392 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-04 15:43:59,338 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 295 flow [2024-06-04 15:43:59,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-04 15:43:59,340 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-04 15:43:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 295 flow [2024-06-04 15:43:59,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:59,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:43:59,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:43:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:43:59,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:43:59,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:43:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1820617125, now seen corresponding path program 1 times [2024-06-04 15:43:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:43:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766739380] [2024-06-04 15:43:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:43:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:43:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:43:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:43:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:43:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766739380] [2024-06-04 15:43:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766739380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:43:59,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:43:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:43:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940678743] [2024-06-04 15:43:59,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:43:59,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:43:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:43:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:43:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:43:59,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:43:59,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 295 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:43:59,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:43:59,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:43:59,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:00,103 INFO L124 PetriNetUnfolderBase]: 175/322 cut-off events. [2024-06-04 15:44:00,103 INFO L125 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2024-06-04 15:44:00,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1321 conditions, 322 events. 175/322 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1150 event pairs, 39 based on Foata normal form. 2/324 useless extension candidates. Maximal degree in co-relation 1290. Up to 276 conditions per place. [2024-06-04 15:44:00,107 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-04 15:44:00,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 461 flow [2024-06-04 15:44:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:44:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:44:00,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 15:44:00,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:44:00,110 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 295 flow. Second operand 6 states and 70 transitions. [2024-06-04 15:44:00,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 461 flow [2024-06-04 15:44:00,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 435 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:00,115 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 320 flow [2024-06-04 15:44:00,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-04 15:44:00,118 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-04 15:44:00,118 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 320 flow [2024-06-04 15:44:00,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:00,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:00,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:00,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:44:00,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:00,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1609761721, now seen corresponding path program 2 times [2024-06-04 15:44:00,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:00,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55949344] [2024-06-04 15:44:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:00,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55949344] [2024-06-04 15:44:00,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55949344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:00,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:00,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:44:00,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181393285] [2024-06-04 15:44:00,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:00,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:44:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:44:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:44:00,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:00,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:00,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:00,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:00,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:00,883 INFO L124 PetriNetUnfolderBase]: 170/312 cut-off events. [2024-06-04 15:44:00,883 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-06-04 15:44:00,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 312 events. 170/312 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1100 event pairs, 38 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1278. Up to 297 conditions per place. [2024-06-04 15:44:00,886 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 44 selfloop transitions, 8 changer transitions 0/54 dead transitions. [2024-06-04 15:44:00,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 438 flow [2024-06-04 15:44:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:44:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:44:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-06-04 15:44:00,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-04 15:44:00,887 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 320 flow. Second operand 6 states and 62 transitions. [2024-06-04 15:44:00,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 438 flow [2024-06-04 15:44:00,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 54 transitions, 423 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:44:00,892 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 326 flow [2024-06-04 15:44:00,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-04 15:44:00,893 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-04 15:44:00,893 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 326 flow [2024-06-04 15:44:00,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:00,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:00,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:00,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:44:00,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:00,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash 604556645, now seen corresponding path program 1 times [2024-06-04 15:44:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:00,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351308139] [2024-06-04 15:44:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:01,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351308139] [2024-06-04 15:44:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351308139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:01,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:01,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855542771] [2024-06-04 15:44:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:01,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:01,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:01,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:01,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:01,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:01,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:01,784 INFO L124 PetriNetUnfolderBase]: 190/346 cut-off events. [2024-06-04 15:44:01,784 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2024-06-04 15:44:01,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 346 events. 190/346 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1245 event pairs, 35 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 1401. Up to 195 conditions per place. [2024-06-04 15:44:01,787 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 45 selfloop transitions, 26 changer transitions 0/73 dead transitions. [2024-06-04 15:44:01,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 586 flow [2024-06-04 15:44:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-04 15:44:01,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-04 15:44:01,789 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 326 flow. Second operand 7 states and 90 transitions. [2024-06-04 15:44:01,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 586 flow [2024-06-04 15:44:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 73 transitions, 552 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:01,794 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 416 flow [2024-06-04 15:44:01,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-04 15:44:01,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-04 15:44:01,795 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 416 flow [2024-06-04 15:44:01,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:01,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:01,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:01,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:44:01,796 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:01,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:01,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1637231969, now seen corresponding path program 2 times [2024-06-04 15:44:01,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:01,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902551955] [2024-06-04 15:44:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:01,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:02,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:02,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902551955] [2024-06-04 15:44:02,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902551955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:02,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:02,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587961884] [2024-06-04 15:44:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:02,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:02,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 416 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:02,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:02,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:02,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:02,659 INFO L124 PetriNetUnfolderBase]: 196/356 cut-off events. [2024-06-04 15:44:02,659 INFO L125 PetriNetUnfolderBase]: For 1854/1854 co-relation queries the response was YES. [2024-06-04 15:44:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 356 events. 196/356 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1296 event pairs, 39 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1597. Up to 332 conditions per place. [2024-06-04 15:44:02,663 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-04 15:44:02,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 597 flow [2024-06-04 15:44:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-04 15:44:02,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-04 15:44:02,664 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 416 flow. Second operand 7 states and 72 transitions. [2024-06-04 15:44:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 597 flow [2024-06-04 15:44:02,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 581 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-04 15:44:02,671 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 467 flow [2024-06-04 15:44:02,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-06-04 15:44:02,672 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-04 15:44:02,672 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 467 flow [2024-06-04 15:44:02,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:02,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:02,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:02,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:44:02,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:02,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:02,674 INFO L85 PathProgramCache]: Analyzing trace with hash 778120289, now seen corresponding path program 3 times [2024-06-04 15:44:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:02,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765104362] [2024-06-04 15:44:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:03,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:03,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:03,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765104362] [2024-06-04 15:44:03,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765104362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:03,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:03,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778970821] [2024-06-04 15:44:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:03,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:03,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:03,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 467 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:03,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:03,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:03,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:03,520 INFO L124 PetriNetUnfolderBase]: 197/358 cut-off events. [2024-06-04 15:44:03,520 INFO L125 PetriNetUnfolderBase]: For 2116/2116 co-relation queries the response was YES. [2024-06-04 15:44:03,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 358 events. 197/358 cut-off events. For 2116/2116 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1300 event pairs, 38 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 1686. Up to 321 conditions per place. [2024-06-04 15:44:03,524 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 55 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-04 15:44:03,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 73 transitions, 679 flow [2024-06-04 15:44:03,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-04 15:44:03,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-06-04 15:44:03,526 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 467 flow. Second operand 7 states and 76 transitions. [2024-06-04 15:44:03,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 73 transitions, 679 flow [2024-06-04 15:44:03,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 661 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 15:44:03,533 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 508 flow [2024-06-04 15:44:03,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-04 15:44:03,534 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-04 15:44:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 508 flow [2024-06-04 15:44:03,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:03,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:03,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:03,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:44:03,535 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:03,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:03,536 INFO L85 PathProgramCache]: Analyzing trace with hash 781934243, now seen corresponding path program 1 times [2024-06-04 15:44:03,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557858384] [2024-06-04 15:44:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:03,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557858384] [2024-06-04 15:44:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557858384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:04,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723313905] [2024-06-04 15:44:04,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:04,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:04,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:04,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:04,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:04,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 508 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:04,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:04,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:04,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:04,686 INFO L124 PetriNetUnfolderBase]: 194/353 cut-off events. [2024-06-04 15:44:04,686 INFO L125 PetriNetUnfolderBase]: For 2315/2315 co-relation queries the response was YES. [2024-06-04 15:44:04,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 353 events. 194/353 cut-off events. For 2315/2315 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1265 event pairs, 37 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1688. Up to 329 conditions per place. [2024-06-04 15:44:04,690 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 59 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-04 15:44:04,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 664 flow [2024-06-04 15:44:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 70 transitions. [2024-06-04 15:44:04,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:44:04,691 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 508 flow. Second operand 7 states and 70 transitions. [2024-06-04 15:44:04,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 664 flow [2024-06-04 15:44:04,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 634 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:04,698 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 502 flow [2024-06-04 15:44:04,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-06-04 15:44:04,700 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-04 15:44:04,700 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 502 flow [2024-06-04 15:44:04,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:04,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:04,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:04,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:44:04,701 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:04,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1736925624, now seen corresponding path program 1 times [2024-06-04 15:44:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:04,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50238929] [2024-06-04 15:44:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:04,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50238929] [2024-06-04 15:44:05,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50238929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:05,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:05,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:05,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389494192] [2024-06-04 15:44:05,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:05,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:05,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:05,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 502 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:05,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:05,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:05,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:05,813 INFO L124 PetriNetUnfolderBase]: 190/346 cut-off events. [2024-06-04 15:44:05,813 INFO L125 PetriNetUnfolderBase]: For 2437/2437 co-relation queries the response was YES. [2024-06-04 15:44:05,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 346 events. 190/346 cut-off events. For 2437/2437 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1236 event pairs, 37 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1647. Up to 285 conditions per place. [2024-06-04 15:44:05,817 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 58 selfloop transitions, 18 changer transitions 0/78 dead transitions. [2024-06-04 15:44:05,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 695 flow [2024-06-04 15:44:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:05,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 15:44:05,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-04 15:44:05,819 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 502 flow. Second operand 8 states and 89 transitions. [2024-06-04 15:44:05,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 695 flow [2024-06-04 15:44:05,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 667 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:05,825 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 525 flow [2024-06-04 15:44:05,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-04 15:44:05,826 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-04 15:44:05,827 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 525 flow [2024-06-04 15:44:05,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:05,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:05,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:44:05,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:05,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1561387243, now seen corresponding path program 1 times [2024-06-04 15:44:05,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:05,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716150025] [2024-06-04 15:44:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:06,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:06,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716150025] [2024-06-04 15:44:06,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716150025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:06,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:06,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:06,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021670060] [2024-06-04 15:44:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:06,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:06,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 525 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:06,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:06,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:06,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:06,674 INFO L124 PetriNetUnfolderBase]: 206/372 cut-off events. [2024-06-04 15:44:06,675 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2024-06-04 15:44:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 372 events. 206/372 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1369 event pairs, 34 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 1802. Up to 195 conditions per place. [2024-06-04 15:44:06,678 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 47 selfloop transitions, 34 changer transitions 0/83 dead transitions. [2024-06-04 15:44:06,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 809 flow [2024-06-04 15:44:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-04 15:44:06,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-04 15:44:06,679 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 525 flow. Second operand 7 states and 87 transitions. [2024-06-04 15:44:06,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 809 flow [2024-06-04 15:44:06,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 769 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:06,687 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 587 flow [2024-06-04 15:44:06,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=587, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-04 15:44:06,687 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-04 15:44:06,688 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 587 flow [2024-06-04 15:44:06,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:06,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:06,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:06,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:44:06,688 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:06,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 766467817, now seen corresponding path program 2 times [2024-06-04 15:44:06,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:06,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663344348] [2024-06-04 15:44:06,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:06,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:07,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663344348] [2024-06-04 15:44:07,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663344348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:07,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:07,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:07,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919726353] [2024-06-04 15:44:07,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:07,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:07,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:07,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:07,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:07,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:07,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 587 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:07,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:07,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:07,519 INFO L124 PetriNetUnfolderBase]: 198/360 cut-off events. [2024-06-04 15:44:07,519 INFO L125 PetriNetUnfolderBase]: For 3361/3361 co-relation queries the response was YES. [2024-06-04 15:44:07,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 360 events. 198/360 cut-off events. For 3361/3361 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1308 event pairs, 32 based on Foata normal form. 4/364 useless extension candidates. Maximal degree in co-relation 1792. Up to 191 conditions per place. [2024-06-04 15:44:07,522 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 48 selfloop transitions, 36 changer transitions 0/86 dead transitions. [2024-06-04 15:44:07,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 863 flow [2024-06-04 15:44:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-04 15:44:07,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-04 15:44:07,524 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 587 flow. Second operand 7 states and 92 transitions. [2024-06-04 15:44:07,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 863 flow [2024-06-04 15:44:07,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 830 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-04 15:44:07,533 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 634 flow [2024-06-04 15:44:07,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=634, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-06-04 15:44:07,534 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-04 15:44:07,534 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 634 flow [2024-06-04 15:44:07,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:07,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:07,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:44:07,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:07,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:07,536 INFO L85 PathProgramCache]: Analyzing trace with hash -127630801, now seen corresponding path program 3 times [2024-06-04 15:44:07,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:07,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747728631] [2024-06-04 15:44:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:08,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747728631] [2024-06-04 15:44:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747728631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:08,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:44:08,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048823524] [2024-06-04 15:44:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:44:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:08,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:44:08,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:44:08,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:08,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:08,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:08,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:08,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:08,332 INFO L124 PetriNetUnfolderBase]: 198/360 cut-off events. [2024-06-04 15:44:08,333 INFO L125 PetriNetUnfolderBase]: For 3521/3521 co-relation queries the response was YES. [2024-06-04 15:44:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 360 events. 198/360 cut-off events. For 3521/3521 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1310 event pairs, 36 based on Foata normal form. 2/362 useless extension candidates. Maximal degree in co-relation 1846. Up to 328 conditions per place. [2024-06-04 15:44:08,336 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2024-06-04 15:44:08,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 79 transitions, 830 flow [2024-06-04 15:44:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-04 15:44:08,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-04 15:44:08,338 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 634 flow. Second operand 7 states and 74 transitions. [2024-06-04 15:44:08,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 79 transitions, 830 flow [2024-06-04 15:44:08,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 743 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:08,347 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 600 flow [2024-06-04 15:44:08,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-06-04 15:44:08,348 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-04 15:44:08,348 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 600 flow [2024-06-04 15:44:08,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:08,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:08,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:08,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:44:08,349 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:08,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash -785408424, now seen corresponding path program 1 times [2024-06-04 15:44:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431482896] [2024-06-04 15:44:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:09,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:09,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431482896] [2024-06-04 15:44:09,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431482896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:09,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:09,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:09,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890612257] [2024-06-04 15:44:09,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:09,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:09,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:09,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 600 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:09,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:09,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:09,361 INFO L124 PetriNetUnfolderBase]: 196/357 cut-off events. [2024-06-04 15:44:09,361 INFO L125 PetriNetUnfolderBase]: For 3342/3342 co-relation queries the response was YES. [2024-06-04 15:44:09,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1810 conditions, 357 events. 196/357 cut-off events. For 3342/3342 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1300 event pairs, 33 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1769. Up to 330 conditions per place. [2024-06-04 15:44:09,364 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 63 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-04 15:44:09,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 772 flow [2024-06-04 15:44:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-04 15:44:09,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34285714285714286 [2024-06-04 15:44:09,366 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 600 flow. Second operand 7 states and 72 transitions. [2024-06-04 15:44:09,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 772 flow [2024-06-04 15:44:09,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 741 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 15:44:09,380 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 603 flow [2024-06-04 15:44:09,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=603, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-06-04 15:44:09,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-04 15:44:09,381 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 603 flow [2024-06-04 15:44:09,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:09,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:09,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:09,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:44:09,381 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:09,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2127453890, now seen corresponding path program 1 times [2024-06-04 15:44:09,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:09,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533548417] [2024-06-04 15:44:09,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:09,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:10,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:10,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533548417] [2024-06-04 15:44:10,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533548417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:10,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:10,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:10,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327112469] [2024-06-04 15:44:10,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:10,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:10,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:10,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:10,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:10,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:10,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:10,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:10,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:10,489 INFO L124 PetriNetUnfolderBase]: 200/365 cut-off events. [2024-06-04 15:44:10,489 INFO L125 PetriNetUnfolderBase]: For 3897/3897 co-relation queries the response was YES. [2024-06-04 15:44:10,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 365 events. 200/365 cut-off events. For 3897/3897 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1346 event pairs, 20 based on Foata normal form. 2/367 useless extension candidates. Maximal degree in co-relation 1820. Up to 263 conditions per place. [2024-06-04 15:44:10,492 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 68 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2024-06-04 15:44:10,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 861 flow [2024-06-04 15:44:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 15:44:10,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-04 15:44:10,494 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 603 flow. Second operand 8 states and 88 transitions. [2024-06-04 15:44:10,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 861 flow [2024-06-04 15:44:10,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 817 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:10,503 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 611 flow [2024-06-04 15:44:10,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2024-06-04 15:44:10,504 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-04 15:44:10,504 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 611 flow [2024-06-04 15:44:10,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:10,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:10,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:10,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:44:10,505 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:10,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1040099306, now seen corresponding path program 2 times [2024-06-04 15:44:10,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:10,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982229451] [2024-06-04 15:44:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982229451] [2024-06-04 15:44:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982229451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:11,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:11,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595751902] [2024-06-04 15:44:11,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:11,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:11,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:11,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:11,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 611 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:11,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:11,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:11,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:11,525 INFO L124 PetriNetUnfolderBase]: 207/378 cut-off events. [2024-06-04 15:44:11,526 INFO L125 PetriNetUnfolderBase]: For 3961/3961 co-relation queries the response was YES. [2024-06-04 15:44:11,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 378 events. 207/378 cut-off events. For 3961/3961 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1413 event pairs, 31 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1895. Up to 217 conditions per place. [2024-06-04 15:44:11,529 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 34 changer transitions 0/93 dead transitions. [2024-06-04 15:44:11,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 946 flow [2024-06-04 15:44:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 15:44:11,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:44:11,531 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 611 flow. Second operand 8 states and 96 transitions. [2024-06-04 15:44:11,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 946 flow [2024-06-04 15:44:11,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 885 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:11,545 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 657 flow [2024-06-04 15:44:11,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=657, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2024-06-04 15:44:11,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-04 15:44:11,545 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 657 flow [2024-06-04 15:44:11,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:11,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:11,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:44:11,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:11,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:11,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2124592156, now seen corresponding path program 1 times [2024-06-04 15:44:11,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:11,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368213779] [2024-06-04 15:44:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:11,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:12,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:12,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368213779] [2024-06-04 15:44:12,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368213779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:12,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:12,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:12,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465654090] [2024-06-04 15:44:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:12,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:12,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:12,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:12,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:12,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:12,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 657 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:12,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:12,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:12,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:12,686 INFO L124 PetriNetUnfolderBase]: 203/372 cut-off events. [2024-06-04 15:44:12,687 INFO L125 PetriNetUnfolderBase]: For 4085/4085 co-relation queries the response was YES. [2024-06-04 15:44:12,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 372 events. 203/372 cut-off events. For 4085/4085 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1388 event pairs, 31 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 1853. Up to 206 conditions per place. [2024-06-04 15:44:12,690 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 35 changer transitions 0/89 dead transitions. [2024-06-04 15:44:12,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 909 flow [2024-06-04 15:44:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 15:44:12,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:44:12,692 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 657 flow. Second operand 8 states and 96 transitions. [2024-06-04 15:44:12,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 909 flow [2024-06-04 15:44:12,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 854 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:44:12,705 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 677 flow [2024-06-04 15:44:12,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-06-04 15:44:12,705 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-04 15:44:12,705 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 677 flow [2024-06-04 15:44:12,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:12,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:12,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:44:12,707 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:12,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2124596930, now seen corresponding path program 3 times [2024-06-04 15:44:12,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:12,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525163860] [2024-06-04 15:44:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:12,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:13,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:13,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525163860] [2024-06-04 15:44:13,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525163860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:13,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625373302] [2024-06-04 15:44:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:13,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:13,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:13,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 677 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:13,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:13,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:13,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:14,035 INFO L124 PetriNetUnfolderBase]: 200/367 cut-off events. [2024-06-04 15:44:14,035 INFO L125 PetriNetUnfolderBase]: For 4065/4065 co-relation queries the response was YES. [2024-06-04 15:44:14,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 367 events. 200/367 cut-off events. For 4065/4065 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1369 event pairs, 32 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1830. Up to 314 conditions per place. [2024-06-04 15:44:14,038 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 68 selfloop transitions, 16 changer transitions 0/86 dead transitions. [2024-06-04 15:44:14,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 86 transitions, 873 flow [2024-06-04 15:44:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-04 15:44:14,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:44:14,040 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 677 flow. Second operand 8 states and 85 transitions. [2024-06-04 15:44:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 86 transitions, 873 flow [2024-06-04 15:44:14,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 788 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:14,052 INFO L231 Difference]: Finished difference. Result has 92 places, 74 transitions, 628 flow [2024-06-04 15:44:14,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=628, PETRI_PLACES=92, PETRI_TRANSITIONS=74} [2024-06-04 15:44:14,053 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-04 15:44:14,053 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 74 transitions, 628 flow [2024-06-04 15:44:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:14,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:14,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:14,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:44:14,054 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:14,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:14,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1913411342, now seen corresponding path program 1 times [2024-06-04 15:44:14,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:14,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413890027] [2024-06-04 15:44:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:14,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:14,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413890027] [2024-06-04 15:44:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413890027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:14,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126495567] [2024-06-04 15:44:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:14,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:14,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 74 transitions, 628 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:14,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:14,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:14,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:15,202 INFO L124 PetriNetUnfolderBase]: 224/419 cut-off events. [2024-06-04 15:44:15,202 INFO L125 PetriNetUnfolderBase]: For 7001/7001 co-relation queries the response was YES. [2024-06-04 15:44:15,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1960 conditions, 419 events. 224/419 cut-off events. For 7001/7001 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1672 event pairs, 34 based on Foata normal form. 14/433 useless extension candidates. Maximal degree in co-relation 1916. Up to 199 conditions per place. [2024-06-04 15:44:15,205 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 53 selfloop transitions, 33 changer transitions 8/96 dead transitions. [2024-06-04 15:44:15,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 96 transitions, 928 flow [2024-06-04 15:44:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-04 15:44:15,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-04 15:44:15,207 INFO L175 Difference]: Start difference. First operand has 92 places, 74 transitions, 628 flow. Second operand 8 states and 102 transitions. [2024-06-04 15:44:15,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 96 transitions, 928 flow [2024-06-04 15:44:15,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 868 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:15,225 INFO L231 Difference]: Finished difference. Result has 92 places, 72 transitions, 627 flow [2024-06-04 15:44:15,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=627, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2024-06-04 15:44:15,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-04 15:44:15,226 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 627 flow [2024-06-04 15:44:15,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:15,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:15,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:15,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:44:15,227 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:15,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1430483552, now seen corresponding path program 2 times [2024-06-04 15:44:15,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:15,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790509057] [2024-06-04 15:44:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:15,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790509057] [2024-06-04 15:44:15,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790509057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:15,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:15,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:15,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608821464] [2024-06-04 15:44:15,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:15,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:15,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:15,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:16,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 627 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:16,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:16,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:16,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:16,276 INFO L124 PetriNetUnfolderBase]: 202/377 cut-off events. [2024-06-04 15:44:16,277 INFO L125 PetriNetUnfolderBase]: For 4736/4736 co-relation queries the response was YES. [2024-06-04 15:44:16,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 377 events. 202/377 cut-off events. For 4736/4736 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1435 event pairs, 31 based on Foata normal form. 2/379 useless extension candidates. Maximal degree in co-relation 1839. Up to 345 conditions per place. [2024-06-04 15:44:16,280 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 70 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-06-04 15:44:16,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 83 transitions, 819 flow [2024-06-04 15:44:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-04 15:44:16,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-04 15:44:16,281 INFO L175 Difference]: Start difference. First operand has 92 places, 72 transitions, 627 flow. Second operand 8 states and 78 transitions. [2024-06-04 15:44:16,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 83 transitions, 819 flow [2024-06-04 15:44:16,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 83 transitions, 732 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:16,295 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 576 flow [2024-06-04 15:44:16,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2024-06-04 15:44:16,296 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-04 15:44:16,296 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 576 flow [2024-06-04 15:44:16,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:16,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:16,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:16,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:44:16,297 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:16,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash 449309024, now seen corresponding path program 3 times [2024-06-04 15:44:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:16,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465006893] [2024-06-04 15:44:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:16,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:17,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:17,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465006893] [2024-06-04 15:44:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465006893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036887842] [2024-06-04 15:44:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:17,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:17,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:17,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 576 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:17,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:17,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:17,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:17,490 INFO L124 PetriNetUnfolderBase]: 206/385 cut-off events. [2024-06-04 15:44:17,490 INFO L125 PetriNetUnfolderBase]: For 4991/4991 co-relation queries the response was YES. [2024-06-04 15:44:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1855 conditions, 385 events. 206/385 cut-off events. For 4991/4991 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1493 event pairs, 31 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1809. Up to 343 conditions per place. [2024-06-04 15:44:17,494 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 66 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-06-04 15:44:17,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 85 transitions, 780 flow [2024-06-04 15:44:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:17,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:17,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-04 15:44:17,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-04 15:44:17,495 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 576 flow. Second operand 8 states and 83 transitions. [2024-06-04 15:44:17,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 85 transitions, 780 flow [2024-06-04 15:44:17,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 754 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:17,512 INFO L231 Difference]: Finished difference. Result has 95 places, 74 transitions, 600 flow [2024-06-04 15:44:17,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=600, PETRI_PLACES=95, PETRI_TRANSITIONS=74} [2024-06-04 15:44:17,513 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-04 15:44:17,513 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 74 transitions, 600 flow [2024-06-04 15:44:17,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:17,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:17,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:17,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:44:17,514 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:17,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 685484384, now seen corresponding path program 4 times [2024-06-04 15:44:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:17,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712720888] [2024-06-04 15:44:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712720888] [2024-06-04 15:44:18,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712720888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:18,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:18,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:18,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938442326] [2024-06-04 15:44:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:18,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:18,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:18,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:18,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:18,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 74 transitions, 600 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:18,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:18,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:18,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:18,539 INFO L124 PetriNetUnfolderBase]: 203/380 cut-off events. [2024-06-04 15:44:18,540 INFO L125 PetriNetUnfolderBase]: For 4858/4858 co-relation queries the response was YES. [2024-06-04 15:44:18,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 380 events. 203/380 cut-off events. For 4858/4858 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1468 event pairs, 30 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 1772. Up to 345 conditions per place. [2024-06-04 15:44:18,544 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 68 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-04 15:44:18,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 84 transitions, 788 flow [2024-06-04 15:44:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-04 15:44:18,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-04 15:44:18,548 INFO L175 Difference]: Start difference. First operand has 95 places, 74 transitions, 600 flow. Second operand 8 states and 80 transitions. [2024-06-04 15:44:18,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 84 transitions, 788 flow [2024-06-04 15:44:18,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 84 transitions, 748 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:18,564 INFO L231 Difference]: Finished difference. Result has 97 places, 74 transitions, 593 flow [2024-06-04 15:44:18,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=593, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2024-06-04 15:44:18,566 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-04 15:44:18,566 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 593 flow [2024-06-04 15:44:18,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:18,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:18,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:18,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:44:18,566 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:18,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 685484136, now seen corresponding path program 1 times [2024-06-04 15:44:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:18,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804637511] [2024-06-04 15:44:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:19,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804637511] [2024-06-04 15:44:19,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804637511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:19,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:19,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:19,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706955323] [2024-06-04 15:44:19,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:19,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:19,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:19,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:19,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:19,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:19,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:19,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:19,536 INFO L124 PetriNetUnfolderBase]: 200/375 cut-off events. [2024-06-04 15:44:19,536 INFO L125 PetriNetUnfolderBase]: For 4558/4558 co-relation queries the response was YES. [2024-06-04 15:44:19,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1766 conditions, 375 events. 200/375 cut-off events. For 4558/4558 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1443 event pairs, 31 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1718. Up to 337 conditions per place. [2024-06-04 15:44:19,540 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 65 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2024-06-04 15:44:19,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 83 transitions, 779 flow [2024-06-04 15:44:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:44:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:44:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-04 15:44:19,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-04 15:44:19,541 INFO L175 Difference]: Start difference. First operand has 97 places, 74 transitions, 593 flow. Second operand 7 states and 74 transitions. [2024-06-04 15:44:19,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 83 transitions, 779 flow [2024-06-04 15:44:19,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 83 transitions, 726 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:19,556 INFO L231 Difference]: Finished difference. Result has 97 places, 74 transitions, 580 flow [2024-06-04 15:44:19,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=580, PETRI_PLACES=97, PETRI_TRANSITIONS=74} [2024-06-04 15:44:19,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-04 15:44:19,557 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 74 transitions, 580 flow [2024-06-04 15:44:19,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:19,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:19,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:44:19,558 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1526560532, now seen corresponding path program 1 times [2024-06-04 15:44:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113078685] [2024-06-04 15:44:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:20,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:20,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113078685] [2024-06-04 15:44:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113078685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:20,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:20,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:20,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984717977] [2024-06-04 15:44:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:20,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:20,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:20,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 74 transitions, 580 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:20,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:20,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:20,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:20,650 INFO L124 PetriNetUnfolderBase]: 234/449 cut-off events. [2024-06-04 15:44:20,651 INFO L125 PetriNetUnfolderBase]: For 9901/9901 co-relation queries the response was YES. [2024-06-04 15:44:20,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2129 conditions, 449 events. 234/449 cut-off events. For 9901/9901 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1835 event pairs, 47 based on Foata normal form. 8/457 useless extension candidates. Maximal degree in co-relation 2081. Up to 188 conditions per place. [2024-06-04 15:44:20,655 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 56 selfloop transitions, 31 changer transitions 12/101 dead transitions. [2024-06-04 15:44:20,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 908 flow [2024-06-04 15:44:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 15:44:20,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-04 15:44:20,656 INFO L175 Difference]: Start difference. First operand has 97 places, 74 transitions, 580 flow. Second operand 9 states and 108 transitions. [2024-06-04 15:44:20,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 908 flow [2024-06-04 15:44:20,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 827 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:20,673 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 555 flow [2024-06-04 15:44:20,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2024-06-04 15:44:20,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-04 15:44:20,674 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 555 flow [2024-06-04 15:44:20,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:20,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:20,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:44:20,675 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:20,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1524686582, now seen corresponding path program 2 times [2024-06-04 15:44:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217415997] [2024-06-04 15:44:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:21,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:21,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217415997] [2024-06-04 15:44:21,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217415997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:21,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:21,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:21,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338722847] [2024-06-04 15:44:21,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:21,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:21,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:21,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:21,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 72 transitions, 555 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:21,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:21,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:21,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:21,718 INFO L124 PetriNetUnfolderBase]: 255/496 cut-off events. [2024-06-04 15:44:21,718 INFO L125 PetriNetUnfolderBase]: For 13363/13363 co-relation queries the response was YES. [2024-06-04 15:44:21,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 496 events. 255/496 cut-off events. For 13363/13363 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2122 event pairs, 58 based on Foata normal form. 8/504 useless extension candidates. Maximal degree in co-relation 2438. Up to 211 conditions per place. [2024-06-04 15:44:21,721 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 33 changer transitions 17/102 dead transitions. [2024-06-04 15:44:21,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 897 flow [2024-06-04 15:44:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:44:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:44:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:44:21,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-04 15:44:21,723 INFO L175 Difference]: Start difference. First operand has 98 places, 72 transitions, 555 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:44:21,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 897 flow [2024-06-04 15:44:21,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 860 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:21,743 INFO L231 Difference]: Finished difference. Result has 99 places, 66 transitions, 547 flow [2024-06-04 15:44:21,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=547, PETRI_PLACES=99, PETRI_TRANSITIONS=66} [2024-06-04 15:44:21,744 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-04 15:44:21,744 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 66 transitions, 547 flow [2024-06-04 15:44:21,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:21,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:21,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:21,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:44:21,745 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:21,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:21,745 INFO L85 PathProgramCache]: Analyzing trace with hash -957895842, now seen corresponding path program 3 times [2024-06-04 15:44:21,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:21,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858957008] [2024-06-04 15:44:21,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:21,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:22,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:22,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858957008] [2024-06-04 15:44:22,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858957008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:22,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:22,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:22,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14232180] [2024-06-04 15:44:22,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:22,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:22,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:22,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:22,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:22,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 66 transitions, 547 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:22,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:22,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:22,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:22,832 INFO L124 PetriNetUnfolderBase]: 231/452 cut-off events. [2024-06-04 15:44:22,832 INFO L125 PetriNetUnfolderBase]: For 11717/11717 co-relation queries the response was YES. [2024-06-04 15:44:22,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 452 events. 231/452 cut-off events. For 11717/11717 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1880 event pairs, 60 based on Foata normal form. 10/462 useless extension candidates. Maximal degree in co-relation 2252. Up to 248 conditions per place. [2024-06-04 15:44:22,835 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 45 selfloop transitions, 27 changer transitions 12/86 dead transitions. [2024-06-04 15:44:22,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 86 transitions, 775 flow [2024-06-04 15:44:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:22,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 15:44:22,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-04 15:44:22,838 INFO L175 Difference]: Start difference. First operand has 99 places, 66 transitions, 547 flow. Second operand 9 states and 104 transitions. [2024-06-04 15:44:22,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 86 transitions, 775 flow [2024-06-04 15:44:22,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 86 transitions, 698 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:44:22,849 INFO L231 Difference]: Finished difference. Result has 91 places, 63 transitions, 510 flow [2024-06-04 15:44:22,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=510, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2024-06-04 15:44:22,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-04 15:44:22,849 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 510 flow [2024-06-04 15:44:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:22,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:22,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:44:22,850 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1544058816, now seen corresponding path program 4 times [2024-06-04 15:44:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:22,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217781667] [2024-06-04 15:44:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:23,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:23,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217781667] [2024-06-04 15:44:23,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217781667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:23,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:23,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:23,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867215339] [2024-06-04 15:44:23,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:23,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:23,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:23,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 510 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:23,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:23,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:23,765 INFO L124 PetriNetUnfolderBase]: 224/443 cut-off events. [2024-06-04 15:44:23,766 INFO L125 PetriNetUnfolderBase]: For 9008/9008 co-relation queries the response was YES. [2024-06-04 15:44:23,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 443 events. 224/443 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1848 event pairs, 55 based on Foata normal form. 8/451 useless extension candidates. Maximal degree in co-relation 2153. Up to 153 conditions per place. [2024-06-04 15:44:23,774 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 27 changer transitions 10/88 dead transitions. [2024-06-04 15:44:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 800 flow [2024-06-04 15:44:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-04 15:44:23,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-04 15:44:23,777 INFO L175 Difference]: Start difference. First operand has 91 places, 63 transitions, 510 flow. Second operand 8 states and 98 transitions. [2024-06-04 15:44:23,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 800 flow [2024-06-04 15:44:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 735 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 15:44:23,788 INFO L231 Difference]: Finished difference. Result has 88 places, 61 transitions, 489 flow [2024-06-04 15:44:23,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=88, PETRI_TRANSITIONS=61} [2024-06-04 15:44:23,789 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-04 15:44:23,789 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 61 transitions, 489 flow [2024-06-04 15:44:23,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:23,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:23,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:44:23,789 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:23,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1544062536, now seen corresponding path program 5 times [2024-06-04 15:44:23,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:23,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117036872] [2024-06-04 15:44:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:24,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:24,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117036872] [2024-06-04 15:44:24,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117036872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:24,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:24,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348792538] [2024-06-04 15:44:24,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:24,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:24,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:24,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:24,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 61 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:24,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:24,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:24,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:24,602 INFO L124 PetriNetUnfolderBase]: 218/431 cut-off events. [2024-06-04 15:44:24,602 INFO L125 PetriNetUnfolderBase]: For 9209/9209 co-relation queries the response was YES. [2024-06-04 15:44:24,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 431 events. 218/431 cut-off events. For 9209/9209 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1811 event pairs, 57 based on Foata normal form. 12/443 useless extension candidates. Maximal degree in co-relation 2055. Up to 241 conditions per place. [2024-06-04 15:44:24,606 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 28 changer transitions 8/81 dead transitions. [2024-06-04 15:44:24,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 81 transitions, 711 flow [2024-06-04 15:44:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-04 15:44:24,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:44:24,608 INFO L175 Difference]: Start difference. First operand has 88 places, 61 transitions, 489 flow. Second operand 8 states and 95 transitions. [2024-06-04 15:44:24,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 81 transitions, 711 flow [2024-06-04 15:44:24,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 81 transitions, 661 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 15:44:24,618 INFO L231 Difference]: Finished difference. Result has 87 places, 58 transitions, 470 flow [2024-06-04 15:44:24,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=470, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2024-06-04 15:44:24,619 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-04 15:44:24,619 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 470 flow [2024-06-04 15:44:24,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:24,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:24,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:24,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:44:24,620 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:24,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:24,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2141749510, now seen corresponding path program 1 times [2024-06-04 15:44:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:24,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362744666] [2024-06-04 15:44:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:24,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:25,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:25,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362744666] [2024-06-04 15:44:25,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362744666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:25,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:25,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083493505] [2024-06-04 15:44:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:25,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:25,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:25,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:25,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:25,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 470 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:25,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:25,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:25,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:25,583 INFO L124 PetriNetUnfolderBase]: 193/379 cut-off events. [2024-06-04 15:44:25,583 INFO L125 PetriNetUnfolderBase]: For 6312/6312 co-relation queries the response was YES. [2024-06-04 15:44:25,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1937 conditions, 379 events. 193/379 cut-off events. For 6312/6312 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1497 event pairs, 55 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 1895. Up to 267 conditions per place. [2024-06-04 15:44:25,585 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 44 selfloop transitions, 25 changer transitions 0/71 dead transitions. [2024-06-04 15:44:25,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 71 transitions, 648 flow [2024-06-04 15:44:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-04 15:44:25,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-04 15:44:25,587 INFO L175 Difference]: Start difference. First operand has 87 places, 58 transitions, 470 flow. Second operand 8 states and 86 transitions. [2024-06-04 15:44:25,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 71 transitions, 648 flow [2024-06-04 15:44:25,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 71 transitions, 566 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:44:25,597 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 452 flow [2024-06-04 15:44:25,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=452, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2024-06-04 15:44:25,598 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-04 15:44:25,598 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 452 flow [2024-06-04 15:44:25,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:25,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:25,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:25,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:44:25,599 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:25,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:25,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2141756950, now seen corresponding path program 2 times [2024-06-04 15:44:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:25,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846493167] [2024-06-04 15:44:25,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:25,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846493167] [2024-06-04 15:44:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846493167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:26,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:26,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968094450] [2024-06-04 15:44:26,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:26,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:26,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:26,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:26,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 452 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:26,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:26,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:26,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:26,689 INFO L124 PetriNetUnfolderBase]: 197/387 cut-off events. [2024-06-04 15:44:26,689 INFO L125 PetriNetUnfolderBase]: For 6921/6921 co-relation queries the response was YES. [2024-06-04 15:44:26,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 387 events. 197/387 cut-off events. For 6921/6921 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1542 event pairs, 55 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 1923. Up to 221 conditions per place. [2024-06-04 15:44:26,692 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 42 selfloop transitions, 28 changer transitions 0/72 dead transitions. [2024-06-04 15:44:26,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 72 transitions, 632 flow [2024-06-04 15:44:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-04 15:44:26,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:44:26,693 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 452 flow. Second operand 8 states and 87 transitions. [2024-06-04 15:44:26,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 72 transitions, 632 flow [2024-06-04 15:44:26,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 72 transitions, 578 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:26,703 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 471 flow [2024-06-04 15:44:26,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=471, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2024-06-04 15:44:26,704 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-04 15:44:26,704 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 471 flow [2024-06-04 15:44:26,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:26,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:26,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:44:26,705 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:26,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1544206686, now seen corresponding path program 6 times [2024-06-04 15:44:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:26,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948373637] [2024-06-04 15:44:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:27,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948373637] [2024-06-04 15:44:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948373637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:27,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:27,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:27,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401561923] [2024-06-04 15:44:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:27,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:27,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:27,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 471 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:27,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:27,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:27,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:27,690 INFO L124 PetriNetUnfolderBase]: 219/433 cut-off events. [2024-06-04 15:44:27,690 INFO L125 PetriNetUnfolderBase]: For 9524/9524 co-relation queries the response was YES. [2024-06-04 15:44:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 433 events. 219/433 cut-off events. For 9524/9524 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1816 event pairs, 59 based on Foata normal form. 10/443 useless extension candidates. Maximal degree in co-relation 2125. Up to 257 conditions per place. [2024-06-04 15:44:27,693 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 45 selfloop transitions, 27 changer transitions 9/83 dead transitions. [2024-06-04 15:44:27,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 83 transitions, 717 flow [2024-06-04 15:44:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:27,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 15:44:27,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2024-06-04 15:44:27,694 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 471 flow. Second operand 9 states and 103 transitions. [2024-06-04 15:44:27,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 83 transitions, 717 flow [2024-06-04 15:44:27,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 83 transitions, 652 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:27,708 INFO L231 Difference]: Finished difference. Result has 90 places, 59 transitions, 462 flow [2024-06-04 15:44:27,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=90, PETRI_TRANSITIONS=59} [2024-06-04 15:44:27,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-04 15:44:27,709 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 59 transitions, 462 flow [2024-06-04 15:44:27,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:27,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:27,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:27,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:44:27,710 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:27,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1549569066, now seen corresponding path program 7 times [2024-06-04 15:44:27,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:27,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546918609] [2024-06-04 15:44:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:27,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:28,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:28,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546918609] [2024-06-04 15:44:28,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546918609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:28,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:28,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:28,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804177230] [2024-06-04 15:44:28,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:28,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:28,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:28,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:28,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 59 transitions, 462 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:28,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:28,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:28,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:28,676 INFO L124 PetriNetUnfolderBase]: 215/429 cut-off events. [2024-06-04 15:44:28,676 INFO L125 PetriNetUnfolderBase]: For 10276/10276 co-relation queries the response was YES. [2024-06-04 15:44:28,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2168 conditions, 429 events. 215/429 cut-off events. For 10276/10276 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1819 event pairs, 63 based on Foata normal form. 10/439 useless extension candidates. Maximal degree in co-relation 2124. Up to 257 conditions per place. [2024-06-04 15:44:28,679 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 45 selfloop transitions, 23 changer transitions 9/79 dead transitions. [2024-06-04 15:44:28,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 79 transitions, 692 flow [2024-06-04 15:44:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:44:28,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-04 15:44:28,680 INFO L175 Difference]: Start difference. First operand has 90 places, 59 transitions, 462 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:44:28,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 79 transitions, 692 flow [2024-06-04 15:44:28,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 630 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:28,695 INFO L231 Difference]: Finished difference. Result has 90 places, 58 transitions, 448 flow [2024-06-04 15:44:28,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=90, PETRI_TRANSITIONS=58} [2024-06-04 15:44:28,696 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-04 15:44:28,696 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 58 transitions, 448 flow [2024-06-04 15:44:28,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:28,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:28,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:28,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:44:28,697 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:28,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1386113374, now seen corresponding path program 3 times [2024-06-04 15:44:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392400862] [2024-06-04 15:44:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:29,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:29,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392400862] [2024-06-04 15:44:29,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392400862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:29,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:29,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:29,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286232537] [2024-06-04 15:44:29,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:29,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:29,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:29,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:29,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 58 transitions, 448 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:29,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:29,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:29,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:29,564 INFO L124 PetriNetUnfolderBase]: 186/374 cut-off events. [2024-06-04 15:44:29,564 INFO L125 PetriNetUnfolderBase]: For 7603/7603 co-relation queries the response was YES. [2024-06-04 15:44:29,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 374 events. 186/374 cut-off events. For 7603/7603 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1493 event pairs, 56 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1881. Up to 328 conditions per place. [2024-06-04 15:44:29,566 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 51 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2024-06-04 15:44:29,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 70 transitions, 624 flow [2024-06-04 15:44:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-04 15:44:29,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-04 15:44:29,567 INFO L175 Difference]: Start difference. First operand has 90 places, 58 transitions, 448 flow. Second operand 8 states and 82 transitions. [2024-06-04 15:44:29,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 70 transitions, 624 flow [2024-06-04 15:44:29,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 70 transitions, 574 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:29,576 INFO L231 Difference]: Finished difference. Result has 89 places, 59 transitions, 451 flow [2024-06-04 15:44:29,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=451, PETRI_PLACES=89, PETRI_TRANSITIONS=59} [2024-06-04 15:44:29,576 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-04 15:44:29,577 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 59 transitions, 451 flow [2024-06-04 15:44:29,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:29,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:29,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:29,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:44:29,577 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:29,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:29,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1136770144, now seen corresponding path program 4 times [2024-06-04 15:44:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:29,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780058048] [2024-06-04 15:44:29,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:29,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:30,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:30,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780058048] [2024-06-04 15:44:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780058048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:30,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238326020] [2024-06-04 15:44:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:30,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:30,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:30,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:30,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:30,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:30,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 59 transitions, 451 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:30,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:30,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:30,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:30,467 INFO L124 PetriNetUnfolderBase]: 183/369 cut-off events. [2024-06-04 15:44:30,467 INFO L125 PetriNetUnfolderBase]: For 7045/7045 co-relation queries the response was YES. [2024-06-04 15:44:30,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 369 events. 183/369 cut-off events. For 7045/7045 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1471 event pairs, 55 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 1807. Up to 307 conditions per place. [2024-06-04 15:44:30,469 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-06-04 15:44:30,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 71 transitions, 629 flow [2024-06-04 15:44:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-04 15:44:30,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-04 15:44:30,471 INFO L175 Difference]: Start difference. First operand has 89 places, 59 transitions, 451 flow. Second operand 8 states and 83 transitions. [2024-06-04 15:44:30,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 71 transitions, 629 flow [2024-06-04 15:44:30,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 71 transitions, 588 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:30,485 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 464 flow [2024-06-04 15:44:30,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2024-06-04 15:44:30,486 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-04 15:44:30,486 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 464 flow [2024-06-04 15:44:30,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:30,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:30,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:30,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:44:30,487 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:30,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:30,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1395317584, now seen corresponding path program 5 times [2024-06-04 15:44:30,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:30,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602838233] [2024-06-04 15:44:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:30,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602838233] [2024-06-04 15:44:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602838233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:31,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:31,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:31,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305385499] [2024-06-04 15:44:31,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:31,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:31,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:31,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:31,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 464 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:31,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:31,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:31,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:31,338 INFO L124 PetriNetUnfolderBase]: 180/364 cut-off events. [2024-06-04 15:44:31,338 INFO L125 PetriNetUnfolderBase]: For 7041/7041 co-relation queries the response was YES. [2024-06-04 15:44:31,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 364 events. 180/364 cut-off events. For 7041/7041 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1445 event pairs, 41 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 1755. Up to 324 conditions per place. [2024-06-04 15:44:31,339 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 58 selfloop transitions, 11 changer transitions 0/71 dead transitions. [2024-06-04 15:44:31,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 71 transitions, 626 flow [2024-06-04 15:44:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-04 15:44:31,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32916666666666666 [2024-06-04 15:44:31,340 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 464 flow. Second operand 8 states and 79 transitions. [2024-06-04 15:44:31,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 71 transitions, 626 flow [2024-06-04 15:44:31,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 71 transitions, 582 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:31,351 INFO L231 Difference]: Finished difference. Result has 93 places, 60 transitions, 446 flow [2024-06-04 15:44:31,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=93, PETRI_TRANSITIONS=60} [2024-06-04 15:44:31,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-04 15:44:31,352 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 60 transitions, 446 flow [2024-06-04 15:44:31,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:31,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:31,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:31,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:44:31,353 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:31,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1129405102, now seen corresponding path program 8 times [2024-06-04 15:44:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180931545] [2024-06-04 15:44:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:31,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:31,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:31,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180931545] [2024-06-04 15:44:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180931545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:31,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:31,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:31,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705958043] [2024-06-04 15:44:31,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:31,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:31,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:31,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:31,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:32,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:32,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 60 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:32,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:32,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:32,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:32,251 INFO L124 PetriNetUnfolderBase]: 196/400 cut-off events. [2024-06-04 15:44:32,252 INFO L125 PetriNetUnfolderBase]: For 9449/9449 co-relation queries the response was YES. [2024-06-04 15:44:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1853 conditions, 400 events. 196/400 cut-off events. For 9449/9449 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1674 event pairs, 56 based on Foata normal form. 10/410 useless extension candidates. Maximal degree in co-relation 1807. Up to 312 conditions per place. [2024-06-04 15:44:32,254 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 13 changer transitions 9/80 dead transitions. [2024-06-04 15:44:32,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 80 transitions, 674 flow [2024-06-04 15:44:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-04 15:44:32,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2024-06-04 15:44:32,255 INFO L175 Difference]: Start difference. First operand has 93 places, 60 transitions, 446 flow. Second operand 9 states and 95 transitions. [2024-06-04 15:44:32,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 80 transitions, 674 flow [2024-06-04 15:44:32,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 80 transitions, 640 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:44:32,271 INFO L231 Difference]: Finished difference. Result has 97 places, 60 transitions, 444 flow [2024-06-04 15:44:32,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=444, PETRI_PLACES=97, PETRI_TRANSITIONS=60} [2024-06-04 15:44:32,272 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-04 15:44:32,272 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 60 transitions, 444 flow [2024-06-04 15:44:32,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:32,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:32,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:32,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:44:32,273 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:32,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1500287311, now seen corresponding path program 1 times [2024-06-04 15:44:32,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:32,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063177] [2024-06-04 15:44:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:33,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:33,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063177] [2024-06-04 15:44:33,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:33,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:33,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:33,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335344318] [2024-06-04 15:44:33,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:33,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:33,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:33,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 60 transitions, 444 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-04 15:44:33,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:33,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:33,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:33,386 INFO L124 PetriNetUnfolderBase]: 178/370 cut-off events. [2024-06-04 15:44:33,386 INFO L125 PetriNetUnfolderBase]: For 8961/8961 co-relation queries the response was YES. [2024-06-04 15:44:33,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 370 events. 178/370 cut-off events. For 8961/8961 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1522 event pairs, 51 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 1701. Up to 225 conditions per place. [2024-06-04 15:44:33,389 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 22 changer transitions 7/74 dead transitions. [2024-06-04 15:44:33,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 74 transitions, 624 flow [2024-06-04 15:44:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-04 15:44:33,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-04 15:44:33,390 INFO L175 Difference]: Start difference. First operand has 97 places, 60 transitions, 444 flow. Second operand 9 states and 94 transitions. [2024-06-04 15:44:33,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 74 transitions, 624 flow [2024-06-04 15:44:33,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 74 transitions, 580 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:33,404 INFO L231 Difference]: Finished difference. Result has 97 places, 57 transitions, 430 flow [2024-06-04 15:44:33,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=430, PETRI_PLACES=97, PETRI_TRANSITIONS=57} [2024-06-04 15:44:33,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-04 15:44:33,405 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 57 transitions, 430 flow [2024-06-04 15:44:33,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-04 15:44:33,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:33,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:33,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:44:33,406 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:33,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:33,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1797235943, now seen corresponding path program 2 times [2024-06-04 15:44:33,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:33,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938319971] [2024-06-04 15:44:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:33,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938319971] [2024-06-04 15:44:34,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938319971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:34,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:34,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:44:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855702995] [2024-06-04 15:44:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:44:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:44:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:44:34,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:34,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 57 transitions, 430 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:34,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:34,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:34,313 INFO L124 PetriNetUnfolderBase]: 165/342 cut-off events. [2024-06-04 15:44:34,314 INFO L125 PetriNetUnfolderBase]: For 9008/9008 co-relation queries the response was YES. [2024-06-04 15:44:34,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 342 events. 165/342 cut-off events. For 9008/9008 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1369 event pairs, 49 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1597. Up to 194 conditions per place. [2024-06-04 15:44:34,316 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 34 selfloop transitions, 13 changer transitions 21/70 dead transitions. [2024-06-04 15:44:34,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 70 transitions, 600 flow [2024-06-04 15:44:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:44:34,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:44:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-04 15:44:34,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:44:34,317 INFO L175 Difference]: Start difference. First operand has 97 places, 57 transitions, 430 flow. Second operand 8 states and 84 transitions. [2024-06-04 15:44:34,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 70 transitions, 600 flow [2024-06-04 15:44:34,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 70 transitions, 515 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:44:34,332 INFO L231 Difference]: Finished difference. Result has 93 places, 43 transitions, 286 flow [2024-06-04 15:44:34,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=93, PETRI_TRANSITIONS=43} [2024-06-04 15:44:34,333 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-04 15:44:34,333 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 43 transitions, 286 flow [2024-06-04 15:44:34,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:34,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:34,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:34,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:44:34,334 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:34,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:34,334 INFO L85 PathProgramCache]: Analyzing trace with hash 798672515, now seen corresponding path program 3 times [2024-06-04 15:44:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677711744] [2024-06-04 15:44:34,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:34,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677711744] [2024-06-04 15:44:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677711744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:35,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:35,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:44:35,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363632538] [2024-06-04 15:44:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:35,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:44:35,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:35,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:44:35,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:44:35,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:35,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 43 transitions, 286 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-04 15:44:35,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:35,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:35,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:35,493 INFO L124 PetriNetUnfolderBase]: 124/271 cut-off events. [2024-06-04 15:44:35,494 INFO L125 PetriNetUnfolderBase]: For 8926/8926 co-relation queries the response was YES. [2024-06-04 15:44:35,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 271 events. 124/271 cut-off events. For 8926/8926 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1025 event pairs, 47 based on Foata normal form. 6/277 useless extension candidates. Maximal degree in co-relation 1289. Up to 166 conditions per place. [2024-06-04 15:44:35,495 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 8 changer transitions 23/58 dead transitions. [2024-06-04 15:44:35,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 58 transitions, 436 flow [2024-06-04 15:44:35,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-04 15:44:35,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-06-04 15:44:35,497 INFO L175 Difference]: Start difference. First operand has 93 places, 43 transitions, 286 flow. Second operand 9 states and 91 transitions. [2024-06-04 15:44:35,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 58 transitions, 436 flow [2024-06-04 15:44:35,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 58 transitions, 394 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:44:35,506 INFO L231 Difference]: Finished difference. Result has 79 places, 33 transitions, 209 flow [2024-06-04 15:44:35,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=209, PETRI_PLACES=79, PETRI_TRANSITIONS=33} [2024-06-04 15:44:35,507 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-06-04 15:44:35,507 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 33 transitions, 209 flow [2024-06-04 15:44:35,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2024-06-04 15:44:35,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:35,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:35,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:44:35,508 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:35,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:35,508 INFO L85 PathProgramCache]: Analyzing trace with hash 19835401, now seen corresponding path program 1 times [2024-06-04 15:44:35,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:35,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282092872] [2024-06-04 15:44:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:35,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:36,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282092872] [2024-06-04 15:44:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282092872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793670031] [2024-06-04 15:44:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:36,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:36,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 33 transitions, 209 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:36,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:36,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:36,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:36,610 INFO L124 PetriNetUnfolderBase]: 80/178 cut-off events. [2024-06-04 15:44:36,611 INFO L125 PetriNetUnfolderBase]: For 4095/4095 co-relation queries the response was YES. [2024-06-04 15:44:36,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 178 events. 80/178 cut-off events. For 4095/4095 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 571 event pairs, 37 based on Foata normal form. 8/186 useless extension candidates. Maximal degree in co-relation 743. Up to 113 conditions per place. [2024-06-04 15:44:36,611 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 21 selfloop transitions, 8 changer transitions 11/42 dead transitions. [2024-06-04 15:44:36,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 42 transitions, 311 flow [2024-06-04 15:44:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-06-04 15:44:36,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2024-06-04 15:44:36,612 INFO L175 Difference]: Start difference. First operand has 79 places, 33 transitions, 209 flow. Second operand 9 states and 82 transitions. [2024-06-04 15:44:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 42 transitions, 311 flow [2024-06-04 15:44:36,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 42 transitions, 275 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-04 15:44:36,615 INFO L231 Difference]: Finished difference. Result has 62 places, 28 transitions, 162 flow [2024-06-04 15:44:36,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=162, PETRI_PLACES=62, PETRI_TRANSITIONS=28} [2024-06-04 15:44:36,615 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-04 15:44:36,615 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 28 transitions, 162 flow [2024-06-04 15:44:36,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:36,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:36,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:36,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:44:36,616 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:36,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash 305172607, now seen corresponding path program 4 times [2024-06-04 15:44:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:36,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115273183] [2024-06-04 15:44:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:37,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:37,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115273183] [2024-06-04 15:44:37,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115273183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:37,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:37,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:37,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530805106] [2024-06-04 15:44:37,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:37,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:37,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:37,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:37,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:37,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:37,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 28 transitions, 162 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:37,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:37,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:37,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:37,578 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-04 15:44:37,579 INFO L125 PetriNetUnfolderBase]: For 917/917 co-relation queries the response was YES. [2024-06-04 15:44:37,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 127 events. 55/127 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 16 based on Foata normal form. 6/133 useless extension candidates. Maximal degree in co-relation 432. Up to 63 conditions per place. [2024-06-04 15:44:37,579 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 19 selfloop transitions, 5 changer transitions 14/40 dead transitions. [2024-06-04 15:44:37,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 40 transitions, 266 flow [2024-06-04 15:44:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2024-06-04 15:44:37,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2024-06-04 15:44:37,580 INFO L175 Difference]: Start difference. First operand has 62 places, 28 transitions, 162 flow. Second operand 9 states and 82 transitions. [2024-06-04 15:44:37,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 40 transitions, 266 flow [2024-06-04 15:44:37,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 40 transitions, 238 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:44:37,582 INFO L231 Difference]: Finished difference. Result has 57 places, 24 transitions, 129 flow [2024-06-04 15:44:37,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=129, PETRI_PLACES=57, PETRI_TRANSITIONS=24} [2024-06-04 15:44:37,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-04 15:44:37,583 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 24 transitions, 129 flow [2024-06-04 15:44:37,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:37,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:44:37,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:44:37,584 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:44:37,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:44:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash 20072737, now seen corresponding path program 5 times [2024-06-04 15:44:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:44:37,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145967982] [2024-06-04 15:44:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:44:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:44:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:44:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:44:38,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:44:38,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145967982] [2024-06-04 15:44:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145967982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:44:38,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:44:38,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:44:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384625221] [2024-06-04 15:44:38,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:44:38,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:44:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:44:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:44:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:44:38,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 15:44:38,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 24 transitions, 129 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:38,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:44:38,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 15:44:38,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:44:38,667 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-04 15:44:38,667 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-06-04 15:44:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 68 events. 26/68 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 1 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 198. Up to 24 conditions per place. [2024-06-04 15:44:38,667 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-04 15:44:38,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 30 transitions, 175 flow [2024-06-04 15:44:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:44:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:44:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 72 transitions. [2024-06-04 15:44:38,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2024-06-04 15:44:38,668 INFO L175 Difference]: Start difference. First operand has 57 places, 24 transitions, 129 flow. Second operand 9 states and 72 transitions. [2024-06-04 15:44:38,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 30 transitions, 175 flow [2024-06-04 15:44:38,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 147 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 15:44:38,668 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-04 15:44:38,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-04 15:44:38,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-04 15:44:38,669 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-04 15:44:38,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:44:38,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:44:38,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:44:38,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:44:38,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:44:38,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:44:38,672 INFO L445 BasicCegarLoop]: Path program histogram: [8, 5, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:44:38,674 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:44:38,674 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:44:38,678 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:44:38,678 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:44:38,678 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:44:38 BasicIcfg [2024-06-04 15:44:38,679 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:44:38,679 INFO L158 Benchmark]: Toolchain (without parser) took 47436.54ms. Allocated memory was 182.5MB in the beginning and 761.3MB in the end (delta: 578.8MB). Free memory was 105.0MB in the beginning and 463.6MB in the end (delta: -358.5MB). Peak memory consumption was 222.9MB. Max. memory is 16.1GB. [2024-06-04 15:44:38,679 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 182.5MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:44:38,679 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 182.5MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:44:38,680 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.55ms. Allocated memory is still 182.5MB. Free memory was 104.9MB in the beginning and 126.0MB in the end (delta: -21.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2024-06-04 15:44:38,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.20ms. Allocated memory is still 182.5MB. Free memory was 126.0MB in the beginning and 123.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:44:38,680 INFO L158 Benchmark]: Boogie Preprocessor took 44.30ms. Allocated memory is still 182.5MB. Free memory was 123.0MB in the beginning and 119.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 15:44:38,681 INFO L158 Benchmark]: RCFGBuilder took 635.71ms. Allocated memory is still 182.5MB. Free memory was 119.8MB in the beginning and 70.4MB in the end (delta: 49.4MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-06-04 15:44:38,681 INFO L158 Benchmark]: TraceAbstraction took 46045.40ms. Allocated memory was 182.5MB in the beginning and 761.3MB in the end (delta: 578.8MB). Free memory was 69.4MB in the beginning and 463.6MB in the end (delta: -394.1MB). Peak memory consumption was 184.6MB. Max. memory is 16.1GB. [2024-06-04 15:44:38,682 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 182.5MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 182.5MB. Free memory is still 110.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 629.55ms. Allocated memory is still 182.5MB. Free memory was 104.9MB in the beginning and 126.0MB in the end (delta: -21.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.20ms. Allocated memory is still 182.5MB. Free memory was 126.0MB in the beginning and 123.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.30ms. Allocated memory is still 182.5MB. Free memory was 123.0MB in the beginning and 119.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 635.71ms. Allocated memory is still 182.5MB. Free memory was 119.8MB in the beginning and 70.4MB in the end (delta: 49.4MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 46045.40ms. Allocated memory was 182.5MB in the beginning and 761.3MB in the end (delta: 578.8MB). Free memory was 69.4MB in the beginning and 463.6MB in the end (delta: -394.1MB). Peak memory consumption was 184.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 794]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.9s, OverallIterations: 46, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 12.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2130 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1756 mSDsluCounter, 1296 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1080 mSDsCounter, 469 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9463 IncrementalHoareTripleChecker+Invalid, 9932 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 469 mSolverCounterUnsat, 216 mSDtfsCounter, 9463 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 385 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 381 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=677occurred in iteration=21, InterpolantAutomatonStates: 347, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 32.4s InterpolantComputationTime, 697 NumberOfCodeBlocks, 697 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 651 ConstructedInterpolants, 0 QuantifiedInterpolants, 26598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 15:44:38,709 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