/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:09:21,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:09:21,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:09:21,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:09:21,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:09:21,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:09:21,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:09:21,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:09:21,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:09:21,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:09:21,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:09:21,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:09:21,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:09:21,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:09:21,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:09:21,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:09:21,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:09:21,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:09:21,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:09:21,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:09:21,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:09:21,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:09:21,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:09:21,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:09:21,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:09:21,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:09:21,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:09:21,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:09:21,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:09:21,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:09:21,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:09:21,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:09:21,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:09:21,835 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:09:21,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:09:21,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:09:21,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:09:21,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:09:21,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:09:21,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:09:21,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:09:21,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:09:21,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:09:21,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:09:21,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:09:21,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:09:21,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:09:21,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:09:21,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:09:21,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:09:21,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:09:21,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:09:21,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:09:21,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:09:21,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:09:22,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:09:22,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:09:22,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:09:22,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:09:22,336 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:09:22,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:09:22,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f9b1a36/ba5585b46b56416d9e0716be819ef706/FLAG26128f314 [2020-12-22 09:09:23,298 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:09:23,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:09:23,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f9b1a36/ba5585b46b56416d9e0716be819ef706/FLAG26128f314 [2020-12-22 09:09:23,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6f9b1a36/ba5585b46b56416d9e0716be819ef706 [2020-12-22 09:09:23,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:09:23,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:09:23,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:09:23,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:09:23,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:09:23,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:09:23" (1/1) ... [2020-12-22 09:09:23,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b36a4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:23, skipping insertion in model container [2020-12-22 09:09:23,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:09:23" (1/1) ... [2020-12-22 09:09:23,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:09:23,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:09:24,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34132,34145] [2020-12-22 09:09:24,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:09:24,619 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:09:24,930 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[34132,34145] [2020-12-22 09:09:25,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:09:25,105 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:09:25,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25 WrapperNode [2020-12-22 09:09:25,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:09:25,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:09:25,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:09:25,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:09:25,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:09:25,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:09:25,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:09:25,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:09:25,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... [2020-12-22 09:09:25,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:09:25,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:09:25,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:09:25,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:09:25,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:09:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:09:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:09:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:09:25,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:09:29,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:09:29,132 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:09:29,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:09:29 BoogieIcfgContainer [2020-12-22 09:09:29,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:09:29,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:09:29,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:09:29,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:09:29,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:09:23" (1/3) ... [2020-12-22 09:09:29,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e02ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:09:29, skipping insertion in model container [2020-12-22 09:09:29,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:09:25" (2/3) ... [2020-12-22 09:09:29,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e02ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:09:29, skipping insertion in model container [2020-12-22 09:09:29,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:09:29" (3/3) ... [2020-12-22 09:09:29,167 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 09:09:29,180 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:09:29,188 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:09:29,219 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:09:29,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:09:29,286 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:09:29,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:09:29,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:09:29,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:09:29,287 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:09:29,287 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:09:29,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:09:29,326 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states. [2020-12-22 09:09:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:09:29,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:29,354 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:29,354 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:29,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash -404802235, now seen corresponding path program 1 times [2020-12-22 09:09:29,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:29,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142832270] [2020-12-22 09:09:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:30,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142832270] [2020-12-22 09:09:30,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:30,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:30,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189295623] [2020-12-22 09:09:30,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:30,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:30,476 INFO L87 Difference]: Start difference. First operand 784 states. Second operand 3 states. [2020-12-22 09:09:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:30,884 INFO L93 Difference]: Finished difference Result 1438 states and 2532 transitions. [2020-12-22 09:09:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:30,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 322 [2020-12-22 09:09:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:30,915 INFO L225 Difference]: With dead ends: 1438 [2020-12-22 09:09:30,915 INFO L226 Difference]: Without dead ends: 1249 [2020-12-22 09:09:30,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2020-12-22 09:09:31,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1247. [2020-12-22 09:09:31,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-12-22 09:09:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1942 transitions. [2020-12-22 09:09:31,056 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1942 transitions. Word has length 322 [2020-12-22 09:09:31,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:31,058 INFO L481 AbstractCegarLoop]: Abstraction has 1247 states and 1942 transitions. [2020-12-22 09:09:31,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:31,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1942 transitions. [2020-12-22 09:09:31,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-12-22 09:09:31,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:31,066 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:31,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:09:31,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:31,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:31,068 INFO L82 PathProgramCache]: Analyzing trace with hash -177646589, now seen corresponding path program 1 times [2020-12-22 09:09:31,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:31,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914299644] [2020-12-22 09:09:31,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:32,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:32,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914299644] [2020-12-22 09:09:32,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:32,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:32,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592542063] [2020-12-22 09:09:32,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:32,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:32,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:32,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:32,083 INFO L87 Difference]: Start difference. First operand 1247 states and 1942 transitions. Second operand 4 states. [2020-12-22 09:09:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:32,523 INFO L93 Difference]: Finished difference Result 3689 states and 5737 transitions. [2020-12-22 09:09:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:32,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2020-12-22 09:09:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:32,541 INFO L225 Difference]: With dead ends: 3689 [2020-12-22 09:09:32,541 INFO L226 Difference]: Without dead ends: 2453 [2020-12-22 09:09:32,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-12-22 09:09:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2451. [2020-12-22 09:09:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2451 states. [2020-12-22 09:09:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3795 transitions. [2020-12-22 09:09:32,697 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3795 transitions. Word has length 322 [2020-12-22 09:09:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:32,699 INFO L481 AbstractCegarLoop]: Abstraction has 2451 states and 3795 transitions. [2020-12-22 09:09:32,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3795 transitions. [2020-12-22 09:09:32,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:09:32,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:32,710 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:32,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:09:32,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:32,714 INFO L82 PathProgramCache]: Analyzing trace with hash 888222084, now seen corresponding path program 1 times [2020-12-22 09:09:32,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:32,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291032412] [2020-12-22 09:09:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:33,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291032412] [2020-12-22 09:09:33,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:33,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:33,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574581968] [2020-12-22 09:09:33,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:33,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:33,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:33,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:33,229 INFO L87 Difference]: Start difference. First operand 2451 states and 3795 transitions. Second operand 3 states. [2020-12-22 09:09:33,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:33,630 INFO L93 Difference]: Finished difference Result 7134 states and 11005 transitions. [2020-12-22 09:09:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:33,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-12-22 09:09:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:33,658 INFO L225 Difference]: With dead ends: 7134 [2020-12-22 09:09:33,659 INFO L226 Difference]: Without dead ends: 4808 [2020-12-22 09:09:33,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:33,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2020-12-22 09:09:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4806. [2020-12-22 09:09:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4806 states. [2020-12-22 09:09:33,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7399 transitions. [2020-12-22 09:09:33,974 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7399 transitions. Word has length 324 [2020-12-22 09:09:33,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:33,978 INFO L481 AbstractCegarLoop]: Abstraction has 4806 states and 7399 transitions. [2020-12-22 09:09:33,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7399 transitions. [2020-12-22 09:09:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-12-22 09:09:33,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:33,991 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:33,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:09:33,992 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:33,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash -844976183, now seen corresponding path program 1 times [2020-12-22 09:09:33,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:33,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677215835] [2020-12-22 09:09:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:34,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677215835] [2020-12-22 09:09:34,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:34,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:34,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963224299] [2020-12-22 09:09:34,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:34,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:34,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:34,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:34,175 INFO L87 Difference]: Start difference. First operand 4806 states and 7399 transitions. Second operand 3 states. [2020-12-22 09:09:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:34,761 INFO L93 Difference]: Finished difference Result 14351 states and 22081 transitions. [2020-12-22 09:09:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:34,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 324 [2020-12-22 09:09:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:34,811 INFO L225 Difference]: With dead ends: 14351 [2020-12-22 09:09:34,811 INFO L226 Difference]: Without dead ends: 9583 [2020-12-22 09:09:34,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2020-12-22 09:09:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 4825. [2020-12-22 09:09:35,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4825 states. [2020-12-22 09:09:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 7427 transitions. [2020-12-22 09:09:35,192 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 7427 transitions. Word has length 324 [2020-12-22 09:09:35,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:35,193 INFO L481 AbstractCegarLoop]: Abstraction has 4825 states and 7427 transitions. [2020-12-22 09:09:35,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:35,193 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 7427 transitions. [2020-12-22 09:09:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-12-22 09:09:35,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:35,207 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:35,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:09:35,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash 167963603, now seen corresponding path program 1 times [2020-12-22 09:09:35,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:35,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805024346] [2020-12-22 09:09:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:35,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805024346] [2020-12-22 09:09:35,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:35,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:35,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205317320] [2020-12-22 09:09:35,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:35,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:35,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:35,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:35,410 INFO L87 Difference]: Start difference. First operand 4825 states and 7427 transitions. Second operand 3 states. [2020-12-22 09:09:35,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:35,951 INFO L93 Difference]: Finished difference Result 14370 states and 22102 transitions. [2020-12-22 09:09:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:35,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 325 [2020-12-22 09:09:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:36,022 INFO L225 Difference]: With dead ends: 14370 [2020-12-22 09:09:36,023 INFO L226 Difference]: Without dead ends: 9601 [2020-12-22 09:09:36,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:36,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9601 states. [2020-12-22 09:09:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9601 to 4843. [2020-12-22 09:09:36,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4843 states. [2020-12-22 09:09:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 7448 transitions. [2020-12-22 09:09:36,554 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 7448 transitions. Word has length 325 [2020-12-22 09:09:36,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:36,555 INFO L481 AbstractCegarLoop]: Abstraction has 4843 states and 7448 transitions. [2020-12-22 09:09:36,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 7448 transitions. [2020-12-22 09:09:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 09:09:36,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:36,574 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:36,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:09:36,575 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:36,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1702930433, now seen corresponding path program 1 times [2020-12-22 09:09:36,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:36,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962128129] [2020-12-22 09:09:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:36,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962128129] [2020-12-22 09:09:36,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:36,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:36,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735577317] [2020-12-22 09:09:36,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:36,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:36,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:36,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:36,989 INFO L87 Difference]: Start difference. First operand 4843 states and 7448 transitions. Second operand 3 states. [2020-12-22 09:09:37,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:37,570 INFO L93 Difference]: Finished difference Result 14006 states and 21457 transitions. [2020-12-22 09:09:37,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:37,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2020-12-22 09:09:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:37,596 INFO L225 Difference]: With dead ends: 14006 [2020-12-22 09:09:37,597 INFO L226 Difference]: Without dead ends: 9404 [2020-12-22 09:09:37,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2020-12-22 09:09:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 9402. [2020-12-22 09:09:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9402 states. [2020-12-22 09:09:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9402 states to 9402 states and 14356 transitions. [2020-12-22 09:09:38,284 INFO L78 Accepts]: Start accepts. Automaton has 9402 states and 14356 transitions. Word has length 326 [2020-12-22 09:09:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:38,285 INFO L481 AbstractCegarLoop]: Abstraction has 9402 states and 14356 transitions. [2020-12-22 09:09:38,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9402 states and 14356 transitions. [2020-12-22 09:09:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-12-22 09:09:38,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:38,307 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:38,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:09:38,307 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:38,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1284193380, now seen corresponding path program 1 times [2020-12-22 09:09:38,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:38,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307722748] [2020-12-22 09:09:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:38,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307722748] [2020-12-22 09:09:38,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:38,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:09:38,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134292472] [2020-12-22 09:09:38,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:09:38,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:38,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:09:38,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:38,875 INFO L87 Difference]: Start difference. First operand 9402 states and 14356 transitions. Second operand 5 states. [2020-12-22 09:09:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:40,115 INFO L93 Difference]: Finished difference Result 27612 states and 42069 transitions. [2020-12-22 09:09:40,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:40,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-12-22 09:09:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:40,168 INFO L225 Difference]: With dead ends: 27612 [2020-12-22 09:09:40,169 INFO L226 Difference]: Without dead ends: 18265 [2020-12-22 09:09:40,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18265 states. [2020-12-22 09:09:41,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18265 to 18263. [2020-12-22 09:09:41,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18263 states. [2020-12-22 09:09:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18263 states to 18263 states and 27665 transitions. [2020-12-22 09:09:41,578 INFO L78 Accepts]: Start accepts. Automaton has 18263 states and 27665 transitions. Word has length 326 [2020-12-22 09:09:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:41,578 INFO L481 AbstractCegarLoop]: Abstraction has 18263 states and 27665 transitions. [2020-12-22 09:09:41,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:09:41,578 INFO L276 IsEmpty]: Start isEmpty. Operand 18263 states and 27665 transitions. [2020-12-22 09:09:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-12-22 09:09:41,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:41,618 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:41,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:09:41,618 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1840045812, now seen corresponding path program 1 times [2020-12-22 09:09:41,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:41,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486873743] [2020-12-22 09:09:41,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:42,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486873743] [2020-12-22 09:09:42,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:42,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:42,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853994691] [2020-12-22 09:09:42,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:42,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:42,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:42,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:42,122 INFO L87 Difference]: Start difference. First operand 18263 states and 27665 transitions. Second operand 4 states. [2020-12-22 09:09:44,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:44,155 INFO L93 Difference]: Finished difference Result 53731 states and 81247 transitions. [2020-12-22 09:09:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:44,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-12-22 09:09:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:44,263 INFO L225 Difference]: With dead ends: 53731 [2020-12-22 09:09:44,263 INFO L226 Difference]: Without dead ends: 35665 [2020-12-22 09:09:44,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35665 states. [2020-12-22 09:09:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35665 to 35663. [2020-12-22 09:09:46,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35663 states. [2020-12-22 09:09:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35663 states to 35663 states and 53600 transitions. [2020-12-22 09:09:46,864 INFO L78 Accepts]: Start accepts. Automaton has 35663 states and 53600 transitions. Word has length 328 [2020-12-22 09:09:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:46,865 INFO L481 AbstractCegarLoop]: Abstraction has 35663 states and 53600 transitions. [2020-12-22 09:09:46,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 35663 states and 53600 transitions. [2020-12-22 09:09:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-12-22 09:09:46,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:46,932 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:46,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:09:46,933 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:46,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:46,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1154074372, now seen corresponding path program 1 times [2020-12-22 09:09:46,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:46,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335172731] [2020-12-22 09:09:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:47,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:47,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335172731] [2020-12-22 09:09:47,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:47,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:47,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499688100] [2020-12-22 09:09:47,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:47,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:47,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:47,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:47,257 INFO L87 Difference]: Start difference. First operand 35663 states and 53600 transitions. Second operand 3 states. [2020-12-22 09:09:50,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:50,225 INFO L93 Difference]: Finished difference Result 104565 states and 156736 transitions. [2020-12-22 09:09:50,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:50,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-12-22 09:09:50,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:50,421 INFO L225 Difference]: With dead ends: 104565 [2020-12-22 09:09:50,421 INFO L226 Difference]: Without dead ends: 69795 [2020-12-22 09:09:50,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69795 states. [2020-12-22 09:09:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69795 to 69793. [2020-12-22 09:09:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69793 states. [2020-12-22 09:09:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69793 states to 69793 states and 104130 transitions. [2020-12-22 09:09:53,903 INFO L78 Accepts]: Start accepts. Automaton has 69793 states and 104130 transitions. Word has length 330 [2020-12-22 09:09:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:53,903 INFO L481 AbstractCegarLoop]: Abstraction has 69793 states and 104130 transitions. [2020-12-22 09:09:53,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 69793 states and 104130 transitions. [2020-12-22 09:09:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-12-22 09:09:54,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:54,068 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:54,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:09:54,068 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:54,069 INFO L82 PathProgramCache]: Analyzing trace with hash 653565193, now seen corresponding path program 1 times [2020-12-22 09:09:54,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:54,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748032080] [2020-12-22 09:09:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:54,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748032080] [2020-12-22 09:09:54,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:54,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:54,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224795924] [2020-12-22 09:09:54,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:54,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:54,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:54,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:54,547 INFO L87 Difference]: Start difference. First operand 69793 states and 104130 transitions. Second operand 3 states. [2020-12-22 09:09:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:59,891 INFO L93 Difference]: Finished difference Result 208583 states and 311084 transitions. [2020-12-22 09:09:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:59,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 330 [2020-12-22 09:09:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:00,267 INFO L225 Difference]: With dead ends: 208583 [2020-12-22 09:10:00,268 INFO L226 Difference]: Without dead ends: 139233 [2020-12-22 09:10:00,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139233 states. [2020-12-22 09:10:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139233 to 69983. [2020-12-22 09:10:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69983 states. [2020-12-22 09:10:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69983 states to 69983 states and 104410 transitions. [2020-12-22 09:10:04,831 INFO L78 Accepts]: Start accepts. Automaton has 69983 states and 104410 transitions. Word has length 330 [2020-12-22 09:10:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:04,831 INFO L481 AbstractCegarLoop]: Abstraction has 69983 states and 104410 transitions. [2020-12-22 09:10:04,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:04,832 INFO L276 IsEmpty]: Start isEmpty. Operand 69983 states and 104410 transitions. [2020-12-22 09:10:04,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-12-22 09:10:04,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:04,934 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:04,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:10:04,935 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2108005747, now seen corresponding path program 1 times [2020-12-22 09:10:04,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:04,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307631023] [2020-12-22 09:10:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:05,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307631023] [2020-12-22 09:10:05,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:05,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:05,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282737976] [2020-12-22 09:10:05,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:05,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:05,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:05,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:05,141 INFO L87 Difference]: Start difference. First operand 69983 states and 104410 transitions. Second operand 3 states. [2020-12-22 09:10:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:11,089 INFO L93 Difference]: Finished difference Result 208695 states and 311162 transitions. [2020-12-22 09:10:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:11,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2020-12-22 09:10:11,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:11,305 INFO L225 Difference]: With dead ends: 208695 [2020-12-22 09:10:11,306 INFO L226 Difference]: Without dead ends: 139395 [2020-12-22 09:10:11,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139395 states. [2020-12-22 09:10:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139395 to 70145. [2020-12-22 09:10:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70145 states. [2020-12-22 09:10:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70145 states to 70145 states and 104596 transitions. [2020-12-22 09:10:15,777 INFO L78 Accepts]: Start accepts. Automaton has 70145 states and 104596 transitions. Word has length 331 [2020-12-22 09:10:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:15,778 INFO L481 AbstractCegarLoop]: Abstraction has 70145 states and 104596 transitions. [2020-12-22 09:10:15,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 70145 states and 104596 transitions. [2020-12-22 09:10:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-12-22 09:10:15,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:15,840 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:15,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:10:15,841 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash -917478145, now seen corresponding path program 1 times [2020-12-22 09:10:15,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:15,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985686024] [2020-12-22 09:10:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:16,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985686024] [2020-12-22 09:10:16,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:16,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:16,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778359496] [2020-12-22 09:10:16,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:16,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:16,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:16,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:16,341 INFO L87 Difference]: Start difference. First operand 70145 states and 104596 transitions. Second operand 3 states. [2020-12-22 09:10:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:22,717 INFO L93 Difference]: Finished difference Result 205475 states and 305674 transitions. [2020-12-22 09:10:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:22,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 332 [2020-12-22 09:10:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:22,910 INFO L225 Difference]: With dead ends: 205475 [2020-12-22 09:10:22,910 INFO L226 Difference]: Without dead ends: 136873 [2020-12-22 09:10:22,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:23,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136873 states. [2020-12-22 09:10:30,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136873 to 136871. [2020-12-22 09:10:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136871 states. [2020-12-22 09:10:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136871 states to 136871 states and 202526 transitions. [2020-12-22 09:10:30,684 INFO L78 Accepts]: Start accepts. Automaton has 136871 states and 202526 transitions. Word has length 332 [2020-12-22 09:10:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:30,684 INFO L481 AbstractCegarLoop]: Abstraction has 136871 states and 202526 transitions. [2020-12-22 09:10:30,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 136871 states and 202526 transitions. [2020-12-22 09:10:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-12-22 09:10:30,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:30,809 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:30,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:10:30,809 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:30,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash -214824356, now seen corresponding path program 1 times [2020-12-22 09:10:30,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:30,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889023898] [2020-12-22 09:10:30,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:31,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889023898] [2020-12-22 09:10:31,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:31,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:10:31,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245404215] [2020-12-22 09:10:31,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:10:31,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:31,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:10:31,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:31,561 INFO L87 Difference]: Start difference. First operand 136871 states and 202526 transitions. Second operand 5 states. [2020-12-22 09:10:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:44,675 INFO L93 Difference]: Finished difference Result 402165 states and 593592 transitions. [2020-12-22 09:10:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:10:44,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-12-22 09:10:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:45,301 INFO L225 Difference]: With dead ends: 402165 [2020-12-22 09:10:45,301 INFO L226 Difference]: Without dead ends: 265913 [2020-12-22 09:10:45,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:10:45,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265913 states. [2020-12-22 09:11:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265913 to 265911. [2020-12-22 09:11:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265911 states. [2020-12-22 09:11:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265911 states to 265911 states and 389722 transitions. [2020-12-22 09:11:01,800 INFO L78 Accepts]: Start accepts. Automaton has 265911 states and 389722 transitions. Word has length 332 [2020-12-22 09:11:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:11:01,801 INFO L481 AbstractCegarLoop]: Abstraction has 265911 states and 389722 transitions. [2020-12-22 09:11:01,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:11:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 265911 states and 389722 transitions. [2020-12-22 09:11:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-12-22 09:11:02,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:11:02,007 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:11:02,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:11:02,007 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:11:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:11:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1786954416, now seen corresponding path program 1 times [2020-12-22 09:11:02,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:11:02,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759375090] [2020-12-22 09:11:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:11:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:11:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:11:02,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759375090] [2020-12-22 09:11:02,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:11:02,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:11:02,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027716768] [2020-12-22 09:11:02,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:11:02,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:11:02,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:11:02,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:02,800 INFO L87 Difference]: Start difference. First operand 265911 states and 389722 transitions. Second operand 3 states. [2020-12-22 09:11:27,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:27,838 INFO L93 Difference]: Finished difference Result 754573 states and 1101970 transitions. [2020-12-22 09:11:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:27,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 334 [2020-12-22 09:11:27,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:28,965 INFO L225 Difference]: With dead ends: 754573 [2020-12-22 09:11:28,966 INFO L226 Difference]: Without dead ends: 495171 [2020-12-22 09:11:29,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:29,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495171 states. [2020-12-22 09:12:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495171 to 495169. [2020-12-22 09:12:01,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495169 states. [2020-12-22 09:12:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495169 states to 495169 states and 718704 transitions. [2020-12-22 09:12:03,418 INFO L78 Accepts]: Start accepts. Automaton has 495169 states and 718704 transitions. Word has length 334 [2020-12-22 09:12:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:12:03,418 INFO L481 AbstractCegarLoop]: Abstraction has 495169 states and 718704 transitions. [2020-12-22 09:12:03,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:12:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 495169 states and 718704 transitions. [2020-12-22 09:12:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-12-22 09:12:03,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:12:03,829 INFO L422 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:12:03,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:12:03,830 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:12:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:12:03,830 INFO L82 PathProgramCache]: Analyzing trace with hash -548235795, now seen corresponding path program 1 times [2020-12-22 09:12:03,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:12:03,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355619740] [2020-12-22 09:12:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:12:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:12:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:12:04,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355619740] [2020-12-22 09:12:04,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:12:04,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:12:04,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674833204] [2020-12-22 09:12:04,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:12:04,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:12:04,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:12:04,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:12:04,797 INFO L87 Difference]: Start difference. First operand 495169 states and 718704 transitions. Second operand 5 states.