./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/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/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6d55d399b7f413c968459e57be858565c9c3a03797404fd2613513b79af9aeb3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:03:03,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:03:03,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:03:03,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:03:03,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:03:03,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:03:03,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:03:03,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:03:03,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:03:03,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:03:03,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:03:03,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:03:03,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:03:03,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:03:03,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:03:03,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:03:03,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:03:03,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:03:03,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:03:03,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:03:03,342 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:03:03,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:03:03,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:03:03,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:03:03,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:03:03,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:03:03,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:03:03,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:03:03,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:03:03,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:03:03,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:03:03,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:03:03,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:03:03,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:03:03,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:03:03,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:03:03,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:03:03,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:03:03,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:03:03,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:03:03,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:03:03,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:03:03,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:03:03,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:03:03,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:03:03,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:03:03,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:03:03,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:03:03,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:03:03,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:03:03,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:03:03,404 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:03:03,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:03:03,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:03:03,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:03:03,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:03:03,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:03:03,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:03:03,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:03:03,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:03:03,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:03:03,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:03:03,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:03:03,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:03:03,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:03:03,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:03:03,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:03:03,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:03:03,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:03:03,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:03:03,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:03:03,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:03:03,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:03:03,409 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:03:03,409 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:03:03,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:03:03,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d55d399b7f413c968459e57be858565c9c3a03797404fd2613513b79af9aeb3 [2022-07-21 08:03:03,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:03:03,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:03:03,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:03:03,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:03:03,761 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:03:03,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-21 08:03:03,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b174358/dd7b081b26c14993ad8ba906de5240db/FLAGd02564498 [2022-07-21 08:03:04,282 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:03:04,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-21 08:03:04,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b174358/dd7b081b26c14993ad8ba906de5240db/FLAGd02564498 [2022-07-21 08:03:04,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5b174358/dd7b081b26c14993ad8ba906de5240db [2022-07-21 08:03:04,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:03:04,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:03:04,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:03:04,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:03:04,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:03:04,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:03:04" (1/1) ... [2022-07-21 08:03:04,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e08626e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:04, skipping insertion in model container [2022-07-21 08:03:04,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:03:04" (1/1) ... [2022-07-21 08:03:04,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:03:04,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:03:04,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[913,926] [2022-07-21 08:03:04,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[5977,5990] [2022-07-21 08:03:04,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:03:05,007 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:03:05,017 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[913,926] [2022-07-21 08:03:05,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c[5977,5990] [2022-07-21 08:03:05,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:03:05,126 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:03:05,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05 WrapperNode [2022-07-21 08:03:05,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:03:05,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:03:05,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:03:05,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:03:05,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,204 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 881 [2022-07-21 08:03:05,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:03:05,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:03:05,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:03:05,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:03:05,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:03:05,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:03:05,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:03:05,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:03:05,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (1/1) ... [2022-07-21 08:03:05,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:03:05,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:05,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:03:05,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:03:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:03:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:03:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:03:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-21 08:03:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-21 08:03:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:03:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:03:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:03:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:03:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:03:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:03:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:03:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:03:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:03:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:03:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:03:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:03:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:03:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:03:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:03:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:03:05,373 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:03:05,578 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:03:05,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:03:06,258 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:03:06,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:03:06,273 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-21 08:03:06,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:03:06 BoogieIcfgContainer [2022-07-21 08:03:06,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:03:06,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:03:06,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:03:06,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:03:06,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:03:04" (1/3) ... [2022-07-21 08:03:06,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ff8919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:03:06, skipping insertion in model container [2022-07-21 08:03:06,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:05" (2/3) ... [2022-07-21 08:03:06,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ff8919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:03:06, skipping insertion in model container [2022-07-21 08:03:06,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:03:06" (3/3) ... [2022-07-21 08:03:06,284 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-21 08:03:06,297 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:03:06,298 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:03:06,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:03:06,376 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@198e1a41, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59d0fd31 [2022-07-21 08:03:06,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:03:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 338 states have (on average 1.636094674556213) internal successors, (553), 343 states have internal predecessors, (553), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 08:03:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 08:03:06,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:06,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:06,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:06,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1554468982, now seen corresponding path program 1 times [2022-07-21 08:03:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134684500] [2022-07-21 08:03:06,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:06,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 08:03:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134684500] [2022-07-21 08:03:06,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134684500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:06,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:06,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937868178] [2022-07-21 08:03:06,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:06,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:06,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:06,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:06,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:06,753 INFO L87 Difference]: Start difference. First operand has 379 states, 338 states have (on average 1.636094674556213) internal successors, (553), 343 states have internal predecessors, (553), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:07,047 INFO L93 Difference]: Finished difference Result 806 states and 1296 transitions. [2022-07-21 08:03:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:07,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-21 08:03:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:07,072 INFO L225 Difference]: With dead ends: 806 [2022-07-21 08:03:07,073 INFO L226 Difference]: Without dead ends: 439 [2022-07-21 08:03:07,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:07,085 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 764 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:07,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 943 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:03:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-21 08:03:07,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 433. [2022-07-21 08:03:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 387 states have (on average 1.5142118863049097) internal successors, (586), 391 states have internal predecessors, (586), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (37), 31 states have call predecessors, (37), 31 states have call successors, (37) [2022-07-21 08:03:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 656 transitions. [2022-07-21 08:03:07,151 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 656 transitions. Word has length 44 [2022-07-21 08:03:07,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:07,151 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 656 transitions. [2022-07-21 08:03:07,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:07,152 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 656 transitions. [2022-07-21 08:03:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:03:07,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:07,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:03:07,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:07,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1185645894, now seen corresponding path program 1 times [2022-07-21 08:03:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204034989] [2022-07-21 08:03:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:03:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:07,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:07,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204034989] [2022-07-21 08:03:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204034989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:07,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:07,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:07,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503526928] [2022-07-21 08:03:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:07,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:07,233 INFO L87 Difference]: Start difference. First operand 433 states and 656 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:07,677 INFO L93 Difference]: Finished difference Result 681 states and 996 transitions. [2022-07-21 08:03:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:07,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-21 08:03:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:07,686 INFO L225 Difference]: With dead ends: 681 [2022-07-21 08:03:07,687 INFO L226 Difference]: Without dead ends: 557 [2022-07-21 08:03:07,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:07,690 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 308 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:07,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1208 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:03:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-21 08:03:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 500. [2022-07-21 08:03:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 448 states have (on average 1.4955357142857142) internal successors, (670), 452 states have internal predecessors, (670), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-21 08:03:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 746 transitions. [2022-07-21 08:03:07,740 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 746 transitions. Word has length 45 [2022-07-21 08:03:07,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:07,740 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 746 transitions. [2022-07-21 08:03:07,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 746 transitions. [2022-07-21 08:03:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:03:07,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:07,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:03:07,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash -98711567, now seen corresponding path program 1 times [2022-07-21 08:03:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973672822] [2022-07-21 08:03:07,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:07,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:03:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:07,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:07,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973672822] [2022-07-21 08:03:07,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973672822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:07,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:07,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589825614] [2022-07-21 08:03:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:07,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:07,793 INFO L87 Difference]: Start difference. First operand 500 states and 746 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:07,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:07,960 INFO L93 Difference]: Finished difference Result 908 states and 1305 transitions. [2022-07-21 08:03:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:07,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-21 08:03:07,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:07,965 INFO L225 Difference]: With dead ends: 908 [2022-07-21 08:03:07,965 INFO L226 Difference]: Without dead ends: 717 [2022-07-21 08:03:07,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:07,967 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 773 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:07,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 942 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-21 08:03:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 665. [2022-07-21 08:03:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 594 states have (on average 1.4478114478114479) internal successors, (860), 601 states have internal predecessors, (860), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (57), 43 states have call predecessors, (57), 45 states have call successors, (57) [2022-07-21 08:03:07,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 964 transitions. [2022-07-21 08:03:07,998 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 964 transitions. Word has length 45 [2022-07-21 08:03:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:07,998 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 964 transitions. [2022-07-21 08:03:07,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 964 transitions. [2022-07-21 08:03:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 08:03:08,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:08,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:08,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:03:08,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1131261626, now seen corresponding path program 1 times [2022-07-21 08:03:08,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:08,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454070729] [2022-07-21 08:03:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:03:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:03:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:03:08,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:08,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454070729] [2022-07-21 08:03:08,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454070729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:08,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:08,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584649887] [2022-07-21 08:03:08,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:08,108 INFO L87 Difference]: Start difference. First operand 665 states and 964 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:08,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:08,491 INFO L93 Difference]: Finished difference Result 1249 states and 1749 transitions. [2022-07-21 08:03:08,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:08,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-21 08:03:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:08,496 INFO L225 Difference]: With dead ends: 1249 [2022-07-21 08:03:08,496 INFO L226 Difference]: Without dead ends: 893 [2022-07-21 08:03:08,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:08,498 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 292 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:08,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1263 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:03:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-07-21 08:03:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 855. [2022-07-21 08:03:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 760 states have (on average 1.394736842105263) internal successors, (1060), 769 states have internal predecessors, (1060), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (81), 57 states have call predecessors, (81), 59 states have call successors, (81) [2022-07-21 08:03:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1202 transitions. [2022-07-21 08:03:08,532 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1202 transitions. Word has length 62 [2022-07-21 08:03:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:08,533 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1202 transitions. [2022-07-21 08:03:08,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1202 transitions. [2022-07-21 08:03:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 08:03:08,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:08,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:08,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:03:08,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1244909695, now seen corresponding path program 1 times [2022-07-21 08:03:08,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:08,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992968478] [2022-07-21 08:03:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:08,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:03:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 08:03:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:08,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992968478] [2022-07-21 08:03:08,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992968478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:08,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:08,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:08,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970970268] [2022-07-21 08:03:08,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:08,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:08,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:08,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:08,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:08,581 INFO L87 Difference]: Start difference. First operand 855 states and 1202 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 08:03:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:08,751 INFO L93 Difference]: Finished difference Result 1508 states and 2055 transitions. [2022-07-21 08:03:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-21 08:03:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:08,756 INFO L225 Difference]: With dead ends: 1508 [2022-07-21 08:03:08,757 INFO L226 Difference]: Without dead ends: 1054 [2022-07-21 08:03:08,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:08,758 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 760 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:08,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 939 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:08,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-07-21 08:03:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 999. [2022-07-21 08:03:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 888 states have (on average 1.3637387387387387) internal successors, (1211), 899 states have internal predecessors, (1211), 69 states have call successors, (69), 35 states have call predecessors, (69), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2022-07-21 08:03:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1375 transitions. [2022-07-21 08:03:08,798 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1375 transitions. Word has length 67 [2022-07-21 08:03:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:08,798 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1375 transitions. [2022-07-21 08:03:08,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 08:03:08,798 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1375 transitions. [2022-07-21 08:03:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:03:08,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:08,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:08,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:03:08,800 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:08,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2059834607, now seen corresponding path program 1 times [2022-07-21 08:03:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:08,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917955331] [2022-07-21 08:03:08,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:08,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:03:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:03:08,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:08,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917955331] [2022-07-21 08:03:08,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917955331] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:08,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406072081] [2022-07-21 08:03:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:08,899 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:08,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:03:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:09,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:03:09,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:09,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:03:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:09,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406072081] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:09,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:03:09,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-21 08:03:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487028802] [2022-07-21 08:03:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:09,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:09,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:09,165 INFO L87 Difference]: Start difference. First operand 999 states and 1375 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:09,329 INFO L93 Difference]: Finished difference Result 1055 states and 1443 transitions. [2022-07-21 08:03:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:03:09,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-21 08:03:09,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:09,334 INFO L225 Difference]: With dead ends: 1055 [2022-07-21 08:03:09,334 INFO L226 Difference]: Without dead ends: 1052 [2022-07-21 08:03:09,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:03:09,336 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1025 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:09,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:09,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-07-21 08:03:09,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 998. [2022-07-21 08:03:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 888 states have (on average 1.3614864864864864) internal successors, (1209), 898 states have internal predecessors, (1209), 68 states have call successors, (68), 35 states have call predecessors, (68), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2022-07-21 08:03:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1372 transitions. [2022-07-21 08:03:09,380 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1372 transitions. Word has length 68 [2022-07-21 08:03:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:09,381 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1372 transitions. [2022-07-21 08:03:09,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1372 transitions. [2022-07-21 08:03:09,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 08:03:09,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:09,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:09,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 08:03:09,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 08:03:09,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash -570809660, now seen corresponding path program 1 times [2022-07-21 08:03:09,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:09,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249678668] [2022-07-21 08:03:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:09,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:03:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:03:09,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249678668] [2022-07-21 08:03:09,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249678668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847056824] [2022-07-21 08:03:09,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:09,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:09,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:09,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:09,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:03:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:09,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:03:09,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:10,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:03:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:10,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847056824] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:03:10,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:03:10,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-21 08:03:10,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134133285] [2022-07-21 08:03:10,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:03:10,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:03:10,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:10,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:03:10,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:10,139 INFO L87 Difference]: Start difference. First operand 998 states and 1372 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-21 08:03:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:11,590 INFO L93 Difference]: Finished difference Result 2698 states and 3592 transitions. [2022-07-21 08:03:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 08:03:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-21 08:03:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:11,600 INFO L225 Difference]: With dead ends: 2698 [2022-07-21 08:03:11,600 INFO L226 Difference]: Without dead ends: 2154 [2022-07-21 08:03:11,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 08:03:11,604 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1566 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:11,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 3599 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:03:11,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-07-21 08:03:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1387. [2022-07-21 08:03:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1238 states have (on average 1.327140549273021) internal successors, (1643), 1256 states have internal predecessors, (1643), 88 states have call successors, (88), 49 states have call predecessors, (88), 59 states have return successors, (129), 82 states have call predecessors, (129), 87 states have call successors, (129) [2022-07-21 08:03:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1860 transitions. [2022-07-21 08:03:11,708 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1860 transitions. Word has length 69 [2022-07-21 08:03:11,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:11,709 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1860 transitions. [2022-07-21 08:03:11,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-21 08:03:11,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1860 transitions. [2022-07-21 08:03:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 08:03:11,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:11,712 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:11,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:11,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-21 08:03:11,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1763884292, now seen corresponding path program 1 times [2022-07-21 08:03:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:11,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601030260] [2022-07-21 08:03:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:11,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:03:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 08:03:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 08:03:12,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601030260] [2022-07-21 08:03:12,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601030260] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388524464] [2022-07-21 08:03:12,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:12,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:12,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:12,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:12,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:03:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:03:12,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:12,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:12,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388524464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:12,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:12,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:12,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486110106] [2022-07-21 08:03:12,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:12,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:12,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:12,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:12,175 INFO L87 Difference]: Start difference. First operand 1387 states and 1860 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 08:03:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:12,233 INFO L93 Difference]: Finished difference Result 2110 states and 2798 transitions. [2022-07-21 08:03:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-21 08:03:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:12,239 INFO L225 Difference]: With dead ends: 2110 [2022-07-21 08:03:12,239 INFO L226 Difference]: Without dead ends: 1265 [2022-07-21 08:03:12,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:12,241 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 525 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:12,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 671 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:12,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-07-21 08:03:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1250. [2022-07-21 08:03:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1117 states have (on average 1.3294538943598926) internal successors, (1485), 1134 states have internal predecessors, (1485), 80 states have call successors, (80), 43 states have call predecessors, (80), 51 states have return successors, (115), 73 states have call predecessors, (115), 79 states have call successors, (115) [2022-07-21 08:03:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1680 transitions. [2022-07-21 08:03:12,317 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1680 transitions. Word has length 88 [2022-07-21 08:03:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:12,318 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1680 transitions. [2022-07-21 08:03:12,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 08:03:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1680 transitions. [2022-07-21 08:03:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 08:03:12,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:12,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:12,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:12,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:12,533 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:12,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash -555075298, now seen corresponding path program 1 times [2022-07-21 08:03:12,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:12,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116935399] [2022-07-21 08:03:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 08:03:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:03:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 08:03:12,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:12,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116935399] [2022-07-21 08:03:12,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116935399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:12,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682680947] [2022-07-21 08:03:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:12,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:12,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:03:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:03:12,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:03:12,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:12,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682680947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:12,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:12,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:12,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595442718] [2022-07-21 08:03:12,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:12,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:12,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:12,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:12,782 INFO L87 Difference]: Start difference. First operand 1250 states and 1680 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 08:03:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:12,827 INFO L93 Difference]: Finished difference Result 1629 states and 2148 transitions. [2022-07-21 08:03:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:12,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-21 08:03:12,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:12,830 INFO L225 Difference]: With dead ends: 1629 [2022-07-21 08:03:12,830 INFO L226 Difference]: Without dead ends: 303 [2022-07-21 08:03:12,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:12,833 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 62 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:12,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1150 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-21 08:03:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-07-21 08:03:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 273 states have (on average 1.564102564102564) internal successors, (427), 274 states have internal predecessors, (427), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 08:03:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 473 transitions. [2022-07-21 08:03:12,844 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 473 transitions. Word has length 103 [2022-07-21 08:03:12,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:12,844 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 473 transitions. [2022-07-21 08:03:12,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 08:03:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 473 transitions. [2022-07-21 08:03:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:12,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:12,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:12,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:13,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:13,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1331621070, now seen corresponding path program 1 times [2022-07-21 08:03:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:13,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550065004] [2022-07-21 08:03:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:13,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:13,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550065004] [2022-07-21 08:03:13,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550065004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:13,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:13,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:03:13,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708846898] [2022-07-21 08:03:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:03:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:03:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:13,176 INFO L87 Difference]: Start difference. First operand 303 states and 473 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:14,102 INFO L93 Difference]: Finished difference Result 704 states and 1117 transitions. [2022-07-21 08:03:14,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:03:14,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:14,105 INFO L225 Difference]: With dead ends: 704 [2022-07-21 08:03:14,105 INFO L226 Difference]: Without dead ends: 412 [2022-07-21 08:03:14,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:14,107 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 801 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:14,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 833 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-21 08:03:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 303. [2022-07-21 08:03:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 273 states have (on average 1.5604395604395604) internal successors, (426), 274 states have internal predecessors, (426), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-21 08:03:14,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 472 transitions. [2022-07-21 08:03:14,123 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 472 transitions. Word has length 145 [2022-07-21 08:03:14,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:14,124 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 472 transitions. [2022-07-21 08:03:14,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 472 transitions. [2022-07-21 08:03:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:14,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:14,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:14,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:03:14,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:14,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:14,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1695087568, now seen corresponding path program 1 times [2022-07-21 08:03:14,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:14,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25573285] [2022-07-21 08:03:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:14,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:14,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:14,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25573285] [2022-07-21 08:03:14,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25573285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:14,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:14,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:03:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863136212] [2022-07-21 08:03:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:14,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:03:14,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:03:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:03:14,250 INFO L87 Difference]: Start difference. First operand 303 states and 472 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:16,230 INFO L93 Difference]: Finished difference Result 1103 states and 1759 transitions. [2022-07-21 08:03:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:03:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:16,234 INFO L225 Difference]: With dead ends: 1103 [2022-07-21 08:03:16,234 INFO L226 Difference]: Without dead ends: 818 [2022-07-21 08:03:16,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:16,235 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1208 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:16,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1317 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:03:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-21 08:03:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 601. [2022-07-21 08:03:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 546 states have (on average 1.5732600732600732) internal successors, (859), 548 states have internal predecessors, (859), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-21 08:03:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 944 transitions. [2022-07-21 08:03:16,269 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 944 transitions. Word has length 145 [2022-07-21 08:03:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:16,269 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 944 transitions. [2022-07-21 08:03:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 944 transitions. [2022-07-21 08:03:16,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:16,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:16,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:16,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:03:16,272 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 47915956, now seen corresponding path program 1 times [2022-07-21 08:03:16,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:16,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071766475] [2022-07-21 08:03:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:16,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:16,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:16,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:16,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:16,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071766475] [2022-07-21 08:03:16,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071766475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:16,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:16,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:16,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264467833] [2022-07-21 08:03:16,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:16,391 INFO L87 Difference]: Start difference. First operand 601 states and 944 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:18,913 INFO L93 Difference]: Finished difference Result 1821 states and 2906 transitions. [2022-07-21 08:03:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:18,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:18,931 INFO L225 Difference]: With dead ends: 1821 [2022-07-21 08:03:18,931 INFO L226 Difference]: Without dead ends: 1238 [2022-07-21 08:03:18,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:18,933 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1230 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:18,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2284 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 08:03:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-07-21 08:03:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 878. [2022-07-21 08:03:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 798 states have (on average 1.5664160401002507) internal successors, (1250), 801 states have internal predecessors, (1250), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-21 08:03:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1373 transitions. [2022-07-21 08:03:18,986 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1373 transitions. Word has length 145 [2022-07-21 08:03:18,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:18,986 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1373 transitions. [2022-07-21 08:03:18,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1373 transitions. [2022-07-21 08:03:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:18,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:18,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:18,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:03:18,989 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash 994953842, now seen corresponding path program 1 times [2022-07-21 08:03:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:18,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66106904] [2022-07-21 08:03:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:19,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:19,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66106904] [2022-07-21 08:03:19,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66106904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:19,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:19,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883214563] [2022-07-21 08:03:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:19,113 INFO L87 Difference]: Start difference. First operand 878 states and 1373 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:21,419 INFO L93 Difference]: Finished difference Result 2878 states and 4583 transitions. [2022-07-21 08:03:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:21,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:21,429 INFO L225 Difference]: With dead ends: 2878 [2022-07-21 08:03:21,429 INFO L226 Difference]: Without dead ends: 2018 [2022-07-21 08:03:21,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:21,433 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1224 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:21,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 2272 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:03:21,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-07-21 08:03:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1436. [2022-07-21 08:03:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1306 states have (on average 1.5612557427258806) internal successors, (2039), 1311 states have internal predecessors, (2039), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-21 08:03:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2242 transitions. [2022-07-21 08:03:21,534 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2242 transitions. Word has length 145 [2022-07-21 08:03:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:21,535 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2242 transitions. [2022-07-21 08:03:21,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2242 transitions. [2022-07-21 08:03:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:21,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:21,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:21,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:03:21,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:21,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1055455056, now seen corresponding path program 1 times [2022-07-21 08:03:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:21,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66890291] [2022-07-21 08:03:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:21,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:21,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66890291] [2022-07-21 08:03:21,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66890291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:21,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:21,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:21,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592068888] [2022-07-21 08:03:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:21,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:21,673 INFO L87 Difference]: Start difference. First operand 1436 states and 2242 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:24,096 INFO L93 Difference]: Finished difference Result 4918 states and 7800 transitions. [2022-07-21 08:03:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:24,111 INFO L225 Difference]: With dead ends: 4918 [2022-07-21 08:03:24,112 INFO L226 Difference]: Without dead ends: 3500 [2022-07-21 08:03:24,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:24,116 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1223 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:24,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2267 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:03:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2022-07-21 08:03:24,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 2553. [2022-07-21 08:03:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.557038312526905) internal successors, (3617), 2332 states have internal predecessors, (3617), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-21 08:03:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3986 transitions. [2022-07-21 08:03:24,294 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3986 transitions. Word has length 145 [2022-07-21 08:03:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:24,295 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3986 transitions. [2022-07-21 08:03:24,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3986 transitions. [2022-07-21 08:03:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:24,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:24,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:24,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:03:24,298 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash -567407950, now seen corresponding path program 1 times [2022-07-21 08:03:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:24,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368253251] [2022-07-21 08:03:24,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:24,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:24,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368253251] [2022-07-21 08:03:24,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368253251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:24,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:24,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872503385] [2022-07-21 08:03:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:24,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:24,431 INFO L87 Difference]: Start difference. First operand 2553 states and 3986 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:25,602 INFO L93 Difference]: Finished difference Result 6054 states and 9605 transitions. [2022-07-21 08:03:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:25,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:25,616 INFO L225 Difference]: With dead ends: 6054 [2022-07-21 08:03:25,616 INFO L226 Difference]: Without dead ends: 3519 [2022-07-21 08:03:25,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:25,636 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1005 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:25,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1082 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2022-07-21 08:03:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 2553. [2022-07-21 08:03:25,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.5531640120533792) internal successors, (3608), 2332 states have internal predecessors, (3608), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-21 08:03:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3977 transitions. [2022-07-21 08:03:25,828 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3977 transitions. Word has length 145 [2022-07-21 08:03:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:25,828 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3977 transitions. [2022-07-21 08:03:25,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3977 transitions. [2022-07-21 08:03:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:25,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:25,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:25,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:03:25,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:25,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1660043152, now seen corresponding path program 1 times [2022-07-21 08:03:25,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:25,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611804863] [2022-07-21 08:03:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:25,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:25,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611804863] [2022-07-21 08:03:25,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611804863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:25,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:25,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719186405] [2022-07-21 08:03:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:25,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:25,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:25,973 INFO L87 Difference]: Start difference. First operand 2553 states and 3977 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:27,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:27,175 INFO L93 Difference]: Finished difference Result 6044 states and 9558 transitions. [2022-07-21 08:03:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:27,190 INFO L225 Difference]: With dead ends: 6044 [2022-07-21 08:03:27,190 INFO L226 Difference]: Without dead ends: 3509 [2022-07-21 08:03:27,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:27,196 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 873 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:27,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1234 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:03:27,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-21 08:03:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2553. [2022-07-21 08:03:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.5492897115798536) internal successors, (3599), 2332 states have internal predecessors, (3599), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-21 08:03:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3968 transitions. [2022-07-21 08:03:27,405 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3968 transitions. Word has length 145 [2022-07-21 08:03:27,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:27,405 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3968 transitions. [2022-07-21 08:03:27,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3968 transitions. [2022-07-21 08:03:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:27,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:27,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:03:27,408 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:27,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1352751858, now seen corresponding path program 1 times [2022-07-21 08:03:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:27,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815245136] [2022-07-21 08:03:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:27,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:27,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815245136] [2022-07-21 08:03:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815245136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:27,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:27,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622218094] [2022-07-21 08:03:27,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:27,538 INFO L87 Difference]: Start difference. First operand 2553 states and 3968 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:28,674 INFO L93 Difference]: Finished difference Result 6034 states and 9511 transitions. [2022-07-21 08:03:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:28,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:28,688 INFO L225 Difference]: With dead ends: 6034 [2022-07-21 08:03:28,688 INFO L226 Difference]: Without dead ends: 3499 [2022-07-21 08:03:28,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:28,694 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1051 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:28,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1048 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-07-21 08:03:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2553. [2022-07-21 08:03:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.545415411106328) internal successors, (3590), 2332 states have internal predecessors, (3590), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-21 08:03:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3959 transitions. [2022-07-21 08:03:28,910 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3959 transitions. Word has length 145 [2022-07-21 08:03:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:28,910 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3959 transitions. [2022-07-21 08:03:28,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3959 transitions. [2022-07-21 08:03:28,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:28,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:28,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:28,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:03:28,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash -489723856, now seen corresponding path program 1 times [2022-07-21 08:03:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:28,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949156209] [2022-07-21 08:03:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:29,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949156209] [2022-07-21 08:03:29,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949156209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:29,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:29,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:29,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104627308] [2022-07-21 08:03:29,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:29,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:29,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:29,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:29,041 INFO L87 Difference]: Start difference. First operand 2553 states and 3959 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:31,429 INFO L93 Difference]: Finished difference Result 8967 states and 14058 transitions. [2022-07-21 08:03:31,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:31,453 INFO L225 Difference]: With dead ends: 8967 [2022-07-21 08:03:31,453 INFO L226 Difference]: Without dead ends: 6432 [2022-07-21 08:03:31,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:31,459 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1201 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:31,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2244 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:03:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2022-07-21 08:03:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 4821. [2022-07-21 08:03:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4391 states have (on average 1.5399681166021408) internal successors, (6762), 4408 states have internal predecessors, (6762), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-21 08:03:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7481 transitions. [2022-07-21 08:03:31,853 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7481 transitions. Word has length 145 [2022-07-21 08:03:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:31,853 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7481 transitions. [2022-07-21 08:03:31,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7481 transitions. [2022-07-21 08:03:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:31,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:31,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:31,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:03:31,858 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:31,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2083240754, now seen corresponding path program 1 times [2022-07-21 08:03:31,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:31,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272091444] [2022-07-21 08:03:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:31,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:31,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:31,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272091444] [2022-07-21 08:03:31,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272091444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:31,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:31,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362114213] [2022-07-21 08:03:31,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:31,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:31,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:31,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:31,984 INFO L87 Difference]: Start difference. First operand 4821 states and 7481 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:33,351 INFO L93 Difference]: Finished difference Result 11286 states and 17750 transitions. [2022-07-21 08:03:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:33,375 INFO L225 Difference]: With dead ends: 11286 [2022-07-21 08:03:33,375 INFO L226 Difference]: Without dead ends: 6483 [2022-07-21 08:03:33,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:33,387 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1003 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:33,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1065 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2022-07-21 08:03:33,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 4821. [2022-07-21 08:03:33,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4391 states have (on average 1.5360965611478024) internal successors, (6745), 4408 states have internal predecessors, (6745), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-21 08:03:33,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7464 transitions. [2022-07-21 08:03:33,822 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7464 transitions. Word has length 145 [2022-07-21 08:03:33,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:33,823 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7464 transitions. [2022-07-21 08:03:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:33,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7464 transitions. [2022-07-21 08:03:33,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:33,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:33,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:33,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:03:33,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:33,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:33,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1750597616, now seen corresponding path program 1 times [2022-07-21 08:03:33,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:33,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111321554] [2022-07-21 08:03:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:33,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:33,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111321554] [2022-07-21 08:03:33,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111321554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:33,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:33,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:33,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729825415] [2022-07-21 08:03:33,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:33,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:33,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:33,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:33,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:33,961 INFO L87 Difference]: Start difference. First operand 4821 states and 7464 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:37,278 INFO L93 Difference]: Finished difference Result 19061 states and 29752 transitions. [2022-07-21 08:03:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:37,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:37,335 INFO L225 Difference]: With dead ends: 19061 [2022-07-21 08:03:37,336 INFO L226 Difference]: Without dead ends: 14258 [2022-07-21 08:03:37,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:37,388 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1521 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:37,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2213 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:03:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2022-07-21 08:03:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 9272. [2022-07-21 08:03:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 8458 states have (on average 1.5340506029794279) internal successors, (12975), 8491 states have internal predecessors, (12975), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2022-07-21 08:03:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 14416 transitions. [2022-07-21 08:03:38,167 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 14416 transitions. Word has length 145 [2022-07-21 08:03:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:38,167 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 14416 transitions. [2022-07-21 08:03:38,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 14416 transitions. [2022-07-21 08:03:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:38,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:38,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:38,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:03:38,175 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:38,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -542483410, now seen corresponding path program 1 times [2022-07-21 08:03:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:38,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803386084] [2022-07-21 08:03:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:38,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:38,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803386084] [2022-07-21 08:03:38,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803386084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:38,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:38,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259943118] [2022-07-21 08:03:38,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:38,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:38,304 INFO L87 Difference]: Start difference. First operand 9272 states and 14416 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:43,260 INFO L93 Difference]: Finished difference Result 36550 states and 57266 transitions. [2022-07-21 08:03:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:43,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:43,356 INFO L225 Difference]: With dead ends: 36550 [2022-07-21 08:03:43,357 INFO L226 Difference]: Without dead ends: 27296 [2022-07-21 08:03:43,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:43,389 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1264 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:43,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2336 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 08:03:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-07-21 08:03:44,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 18233. [2022-07-21 08:03:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18233 states, 16667 states have (on average 1.5341093178136438) internal successors, (25569), 16732 states have internal predecessors, (25569), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2022-07-21 08:03:44,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18233 states to 18233 states and 28584 transitions. [2022-07-21 08:03:44,826 INFO L78 Accepts]: Start accepts. Automaton has 18233 states and 28584 transitions. Word has length 145 [2022-07-21 08:03:44,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:44,826 INFO L495 AbstractCegarLoop]: Abstraction has 18233 states and 28584 transitions. [2022-07-21 08:03:44,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 18233 states and 28584 transitions. [2022-07-21 08:03:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:44,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:44,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:44,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:03:44,837 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1184661552, now seen corresponding path program 1 times [2022-07-21 08:03:44,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:44,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355948943] [2022-07-21 08:03:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:44,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:44,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355948943] [2022-07-21 08:03:44,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355948943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:44,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:44,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672874572] [2022-07-21 08:03:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:44,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:44,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:44,951 INFO L87 Difference]: Start difference. First operand 18233 states and 28584 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:52,182 INFO L93 Difference]: Finished difference Result 71141 states and 112344 transitions. [2022-07-21 08:03:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:52,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:03:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:52,389 INFO L225 Difference]: With dead ends: 71141 [2022-07-21 08:03:52,390 INFO L226 Difference]: Without dead ends: 52926 [2022-07-21 08:03:52,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:52,455 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1442 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:52,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2207 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:03:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52926 states. [2022-07-21 08:03:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52926 to 36122. [2022-07-21 08:03:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36122 states, 33084 states have (on average 1.5350924918389555) internal successors, (50787), 33213 states have internal predecessors, (50787), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2022-07-21 08:03:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36122 states to 36122 states and 57372 transitions. [2022-07-21 08:03:55,825 INFO L78 Accepts]: Start accepts. Automaton has 36122 states and 57372 transitions. Word has length 145 [2022-07-21 08:03:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:55,825 INFO L495 AbstractCegarLoop]: Abstraction has 36122 states and 57372 transitions. [2022-07-21 08:03:55,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 36122 states and 57372 transitions. [2022-07-21 08:03:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:03:55,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:55,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:55,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:03:55,847 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:55,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:55,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1656017902, now seen corresponding path program 1 times [2022-07-21 08:03:55,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:55,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021026736] [2022-07-21 08:03:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:55,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:03:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:03:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:03:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:03:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:55,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:55,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021026736] [2022-07-21 08:03:55,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021026736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:55,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:55,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202783169] [2022-07-21 08:03:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:55,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:55,960 INFO L87 Difference]: Start difference. First operand 36122 states and 57372 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:08,670 INFO L93 Difference]: Finished difference Result 139140 states and 222558 transitions. [2022-07-21 08:04:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:04:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:09,047 INFO L225 Difference]: With dead ends: 139140 [2022-07-21 08:04:09,047 INFO L226 Difference]: Without dead ends: 103036 [2022-07-21 08:04:09,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:09,154 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1242 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:09,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 2294 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 08:04:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103036 states. [2022-07-21 08:04:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103036 to 71835. [2022-07-21 08:04:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71835 states, 65917 states have (on average 1.5365535446091296) internal successors, (101285), 66174 states have internal predecessors, (101285), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2022-07-21 08:04:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71835 states to 71835 states and 116340 transitions. [2022-07-21 08:04:15,612 INFO L78 Accepts]: Start accepts. Automaton has 71835 states and 116340 transitions. Word has length 145 [2022-07-21 08:04:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:15,613 INFO L495 AbstractCegarLoop]: Abstraction has 71835 states and 116340 transitions. [2022-07-21 08:04:15,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 71835 states and 116340 transitions. [2022-07-21 08:04:15,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:04:15,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:15,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:04:15,652 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:15,653 INFO L85 PathProgramCache]: Analyzing trace with hash 8654960, now seen corresponding path program 1 times [2022-07-21 08:04:15,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:15,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329125549] [2022-07-21 08:04:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:04:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:04:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:04:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:04:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:15,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:15,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329125549] [2022-07-21 08:04:15,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329125549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:15,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:15,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:15,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846267090] [2022-07-21 08:04:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:15,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:15,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:15,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:15,767 INFO L87 Difference]: Start difference. First operand 71835 states and 116340 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)