/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.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:12:59,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:12:59,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:12:59,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:12:59,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:12:59,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:12:59,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:12:59,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:12:59,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:12:59,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:12:59,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:12:59,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:12:59,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:12:59,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:12:59,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:12:59,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:12:59,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:12:59,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:12:59,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:12:59,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:12:59,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:12:59,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:12:59,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:12:59,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:12:59,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:12:59,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:12:59,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:12:59,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:12:59,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:12:59,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:12:59,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:12:59,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:12:59,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:12:59,414 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:12:59,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:12:59,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:12:59,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:12:59,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:12:59,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:12:59,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:12:59,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:12:59,417 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:12:59,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:12:59,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:12:59,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:12:59,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:12:59,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:12:59,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:12:59,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:12:59,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:12:59,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:12:59,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:12:59,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:12:59,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:12:59,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:12:59,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:12:59,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:12:59,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:12:59,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:12:59,944 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:12:59,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:13:00,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af39d9f4/178588f2599f4f218f8fc0a4bdefe4bf/FLAGd820a79d6 [2020-12-22 09:13:01,061 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:13:01,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:13:01,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af39d9f4/178588f2599f4f218f8fc0a4bdefe4bf/FLAGd820a79d6 [2020-12-22 09:13:01,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8af39d9f4/178588f2599f4f218f8fc0a4bdefe4bf [2020-12-22 09:13:01,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:13:01,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:13:01,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:01,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:13:01,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:13:01,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:01" (1/1) ... [2020-12-22 09:13:01,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c512112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:01, skipping insertion in model container [2020-12-22 09:13:01,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:13:01" (1/1) ... [2020-12-22 09:13:01,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:13:01,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:13:02,467 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.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39635,39648] [2020-12-22 09:13:02,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:02,947 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:13:03,300 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.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[39635,39648] [2020-12-22 09:13:03,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:13:03,735 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:13:03,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03 WrapperNode [2020-12-22 09:13:03,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:13:03,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:03,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:13:03,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:13:03,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:03,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:13:04,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:13:04,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:13:04,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:13:04,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (1/1) ... [2020-12-22 09:13:04,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:13:04,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:13:04,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:13:04,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:13:04,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (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 09:13:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:13:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:13:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:13:04,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:13:08,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:13:08,687 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:13:08,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:08 BoogieIcfgContainer [2020-12-22 09:13:08,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:13:08,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:13:08,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:13:08,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:13:08,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:13:01" (1/3) ... [2020-12-22 09:13:08,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889cdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:08, skipping insertion in model container [2020-12-22 09:13:08,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:13:03" (2/3) ... [2020-12-22 09:13:08,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889cdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:08, skipping insertion in model container [2020-12-22 09:13:08,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:08" (3/3) ... [2020-12-22 09:13:08,701 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-12-22 09:13:08,708 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:13:08,715 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:13:08,735 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:13:08,774 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:13:08,774 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:13:08,775 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:13:08,775 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:13:08,775 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:13:08,775 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:13:08,775 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:13:08,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:13:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states. [2020-12-22 09:13:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:13:08,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:08,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:08,867 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:08,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:08,873 INFO L82 PathProgramCache]: Analyzing trace with hash 908510727, now seen corresponding path program 1 times [2020-12-22 09:13:08,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:08,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009660317] [2020-12-22 09:13:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:10,242 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 09:13:10,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009660317] [2020-12-22 09:13:10,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:10,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:10,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783016655] [2020-12-22 09:13:10,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:10,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:10,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:10,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:10,281 INFO L87 Difference]: Start difference. First operand 1544 states. Second operand 3 states. [2020-12-22 09:13:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:10,601 INFO L93 Difference]: Finished difference Result 3144 states and 5490 transitions. [2020-12-22 09:13:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:10,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-12-22 09:13:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:10,670 INFO L225 Difference]: With dead ends: 3144 [2020-12-22 09:13:10,670 INFO L226 Difference]: Without dead ends: 2170 [2020-12-22 09:13:10,683 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 09:13:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2170 states. [2020-12-22 09:13:10,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2170 to 2168. [2020-12-22 09:13:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2168 states. [2020-12-22 09:13:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 3624 transitions. [2020-12-22 09:13:10,859 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 3624 transitions. Word has length 392 [2020-12-22 09:13:10,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:10,860 INFO L481 AbstractCegarLoop]: Abstraction has 2168 states and 3624 transitions. [2020-12-22 09:13:10,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 3624 transitions. [2020-12-22 09:13:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:13:10,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:10,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:10,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:13:10,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:10,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:10,875 INFO L82 PathProgramCache]: Analyzing trace with hash -844649649, now seen corresponding path program 1 times [2020-12-22 09:13:10,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:10,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887917931] [2020-12-22 09:13:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:11,377 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 09:13:11,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887917931] [2020-12-22 09:13:11,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:11,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:11,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773219168] [2020-12-22 09:13:11,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:11,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:11,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:11,383 INFO L87 Difference]: Start difference. First operand 2168 states and 3624 transitions. Second operand 3 states. [2020-12-22 09:13:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:11,635 INFO L93 Difference]: Finished difference Result 4810 states and 7952 transitions. [2020-12-22 09:13:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:11,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-12-22 09:13:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:11,666 INFO L225 Difference]: With dead ends: 4810 [2020-12-22 09:13:11,666 INFO L226 Difference]: Without dead ends: 3246 [2020-12-22 09:13:11,673 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 09:13:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2020-12-22 09:13:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3244. [2020-12-22 09:13:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3244 states. [2020-12-22 09:13:11,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 5377 transitions. [2020-12-22 09:13:11,975 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 5377 transitions. Word has length 392 [2020-12-22 09:13:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:11,977 INFO L481 AbstractCegarLoop]: Abstraction has 3244 states and 5377 transitions. [2020-12-22 09:13:11,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:11,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 5377 transitions. [2020-12-22 09:13:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:13:11,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:11,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:11,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:13:11,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:12,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1261885765, now seen corresponding path program 1 times [2020-12-22 09:13:12,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:12,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445749296] [2020-12-22 09:13:12,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:12,482 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 09:13:12,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445749296] [2020-12-22 09:13:12,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:12,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:12,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837039915] [2020-12-22 09:13:12,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:12,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:12,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:12,503 INFO L87 Difference]: Start difference. First operand 3244 states and 5377 transitions. Second operand 3 states. [2020-12-22 09:13:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:12,763 INFO L93 Difference]: Finished difference Result 7416 states and 12182 transitions. [2020-12-22 09:13:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:12,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-12-22 09:13:12,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:12,792 INFO L225 Difference]: With dead ends: 7416 [2020-12-22 09:13:12,793 INFO L226 Difference]: Without dead ends: 4880 [2020-12-22 09:13:12,800 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 09:13:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2020-12-22 09:13:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 4878. [2020-12-22 09:13:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4878 states. [2020-12-22 09:13:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 8022 transitions. [2020-12-22 09:13:13,074 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 8022 transitions. Word has length 392 [2020-12-22 09:13:13,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:13,082 INFO L481 AbstractCegarLoop]: Abstraction has 4878 states and 8022 transitions. [2020-12-22 09:13:13,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:13,083 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 8022 transitions. [2020-12-22 09:13:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:13:13,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:13,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:13,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:13:13,100 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:13,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1671552370, now seen corresponding path program 1 times [2020-12-22 09:13:13,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:13,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51637193] [2020-12-22 09:13:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:13,587 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 09:13:13,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51637193] [2020-12-22 09:13:13,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:13,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:13,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222159487] [2020-12-22 09:13:13,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:13,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:13,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:13,593 INFO L87 Difference]: Start difference. First operand 4878 states and 8022 transitions. Second operand 3 states. [2020-12-22 09:13:13,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:13,899 INFO L93 Difference]: Finished difference Result 6750 states and 11200 transitions. [2020-12-22 09:13:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:13,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 392 [2020-12-22 09:13:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:13,930 INFO L225 Difference]: With dead ends: 6750 [2020-12-22 09:13:13,931 INFO L226 Difference]: Without dead ends: 5460 [2020-12-22 09:13:13,938 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 09:13:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2020-12-22 09:13:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5454. [2020-12-22 09:13:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5454 states. [2020-12-22 09:13:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 8998 transitions. [2020-12-22 09:13:14,298 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 8998 transitions. Word has length 392 [2020-12-22 09:13:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:14,299 INFO L481 AbstractCegarLoop]: Abstraction has 5454 states and 8998 transitions. [2020-12-22 09:13:14,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 8998 transitions. [2020-12-22 09:13:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:13:14,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:14,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:14,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:13:14,317 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:14,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1121095993, now seen corresponding path program 1 times [2020-12-22 09:13:14,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:14,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208864177] [2020-12-22 09:13:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:15,086 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 09:13:15,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208864177] [2020-12-22 09:13:15,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:15,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:15,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968937755] [2020-12-22 09:13:15,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:15,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:15,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:15,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:15,089 INFO L87 Difference]: Start difference. First operand 5454 states and 8998 transitions. Second operand 7 states. [2020-12-22 09:13:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:16,929 INFO L93 Difference]: Finished difference Result 23340 states and 39313 transitions. [2020-12-22 09:13:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:13:16,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-12-22 09:13:16,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:17,022 INFO L225 Difference]: With dead ends: 23340 [2020-12-22 09:13:17,023 INFO L226 Difference]: Without dead ends: 21474 [2020-12-22 09:13:17,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 09:13:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21474 states. [2020-12-22 09:13:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21474 to 7978. [2020-12-22 09:13:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7978 states. [2020-12-22 09:13:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7978 states to 7978 states and 13234 transitions. [2020-12-22 09:13:17,920 INFO L78 Accepts]: Start accepts. Automaton has 7978 states and 13234 transitions. Word has length 392 [2020-12-22 09:13:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:17,922 INFO L481 AbstractCegarLoop]: Abstraction has 7978 states and 13234 transitions. [2020-12-22 09:13:17,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:13:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7978 states and 13234 transitions. [2020-12-22 09:13:17,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:13:17,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:17,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:17,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:13:17,949 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:17,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1078061460, now seen corresponding path program 1 times [2020-12-22 09:13:17,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:17,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636718977] [2020-12-22 09:13:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:18,657 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 09:13:18,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636718977] [2020-12-22 09:13:18,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:18,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:13:18,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654118982] [2020-12-22 09:13:18,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:13:18,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:18,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:13:18,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:13:18,660 INFO L87 Difference]: Start difference. First operand 7978 states and 13234 transitions. Second operand 4 states. [2020-12-22 09:13:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:19,759 INFO L93 Difference]: Finished difference Result 18208 states and 30527 transitions. [2020-12-22 09:13:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:19,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2020-12-22 09:13:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:19,803 INFO L225 Difference]: With dead ends: 18208 [2020-12-22 09:13:19,804 INFO L226 Difference]: Without dead ends: 14478 [2020-12-22 09:13:19,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:13:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14478 states. [2020-12-22 09:13:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14478 to 12350. [2020-12-22 09:13:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12350 states. [2020-12-22 09:13:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12350 states to 12350 states and 20586 transitions. [2020-12-22 09:13:20,736 INFO L78 Accepts]: Start accepts. Automaton has 12350 states and 20586 transitions. Word has length 393 [2020-12-22 09:13:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:20,737 INFO L481 AbstractCegarLoop]: Abstraction has 12350 states and 20586 transitions. [2020-12-22 09:13:20,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:13:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12350 states and 20586 transitions. [2020-12-22 09:13:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 09:13:20,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:20,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:20,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:13:20,872 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash -2103011578, now seen corresponding path program 1 times [2020-12-22 09:13:20,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:20,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006899321] [2020-12-22 09:13:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:21,264 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 09:13:21,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006899321] [2020-12-22 09:13:21,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:21,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:21,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642421923] [2020-12-22 09:13:21,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:21,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:21,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:21,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:21,267 INFO L87 Difference]: Start difference. First operand 12350 states and 20586 transitions. Second operand 3 states. [2020-12-22 09:13:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:22,878 INFO L93 Difference]: Finished difference Result 25312 states and 42255 transitions. [2020-12-22 09:13:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:22,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 394 [2020-12-22 09:13:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:22,948 INFO L225 Difference]: With dead ends: 25312 [2020-12-22 09:13:22,949 INFO L226 Difference]: Without dead ends: 23034 [2020-12-22 09:13:22,962 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 09:13:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23034 states. [2020-12-22 09:13:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23034 to 23032. [2020-12-22 09:13:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23032 states. [2020-12-22 09:13:24,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23032 states to 23032 states and 38387 transitions. [2020-12-22 09:13:24,665 INFO L78 Accepts]: Start accepts. Automaton has 23032 states and 38387 transitions. Word has length 394 [2020-12-22 09:13:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:24,666 INFO L481 AbstractCegarLoop]: Abstraction has 23032 states and 38387 transitions. [2020-12-22 09:13:24,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 23032 states and 38387 transitions. [2020-12-22 09:13:24,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 09:13:24,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:24,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:24,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:13:24,706 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:24,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:24,707 INFO L82 PathProgramCache]: Analyzing trace with hash 92886377, now seen corresponding path program 1 times [2020-12-22 09:13:24,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:24,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443618850] [2020-12-22 09:13:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:25,609 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 09:13:25,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443618850] [2020-12-22 09:13:25,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:25,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:25,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035075016] [2020-12-22 09:13:25,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:25,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:25,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:25,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:25,614 INFO L87 Difference]: Start difference. First operand 23032 states and 38387 transitions. Second operand 7 states. [2020-12-22 09:13:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:28,919 INFO L93 Difference]: Finished difference Result 57008 states and 95925 transitions. [2020-12-22 09:13:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:13:28,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-12-22 09:13:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:29,081 INFO L225 Difference]: With dead ends: 57008 [2020-12-22 09:13:29,082 INFO L226 Difference]: Without dead ends: 49562 [2020-12-22 09:13:29,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:13:29,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49562 states. [2020-12-22 09:13:31,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49562 to 30916. [2020-12-22 09:13:31,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30916 states. [2020-12-22 09:13:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30916 states to 30916 states and 51667 transitions. [2020-12-22 09:13:31,352 INFO L78 Accepts]: Start accepts. Automaton has 30916 states and 51667 transitions. Word has length 394 [2020-12-22 09:13:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:31,353 INFO L481 AbstractCegarLoop]: Abstraction has 30916 states and 51667 transitions. [2020-12-22 09:13:31,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:13:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 30916 states and 51667 transitions. [2020-12-22 09:13:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 09:13:31,376 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:31,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:31,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:13:31,377 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:31,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:31,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1807515309, now seen corresponding path program 1 times [2020-12-22 09:13:31,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:31,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346161046] [2020-12-22 09:13:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:32,241 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 09:13:32,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346161046] [2020-12-22 09:13:32,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:32,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:32,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019766308] [2020-12-22 09:13:32,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:32,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:32,244 INFO L87 Difference]: Start difference. First operand 30916 states and 51667 transitions. Second operand 7 states. [2020-12-22 09:13:32,492 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-22 09:13:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:35,865 INFO L93 Difference]: Finished difference Result 64492 states and 108535 transitions. [2020-12-22 09:13:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:13:35,866 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-12-22 09:13:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:36,000 INFO L225 Difference]: With dead ends: 64492 [2020-12-22 09:13:36,001 INFO L226 Difference]: Without dead ends: 57046 [2020-12-22 09:13:36,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:13:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57046 states. [2020-12-22 09:13:38,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57046 to 38400. [2020-12-22 09:13:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38400 states. [2020-12-22 09:13:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38400 states to 38400 states and 64277 transitions. [2020-12-22 09:13:38,680 INFO L78 Accepts]: Start accepts. Automaton has 38400 states and 64277 transitions. Word has length 394 [2020-12-22 09:13:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:38,681 INFO L481 AbstractCegarLoop]: Abstraction has 38400 states and 64277 transitions. [2020-12-22 09:13:38,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:13:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 38400 states and 64277 transitions. [2020-12-22 09:13:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 09:13:38,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:38,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:38,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:13:38,706 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash 260567086, now seen corresponding path program 1 times [2020-12-22 09:13:38,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:38,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334946752] [2020-12-22 09:13:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:39,159 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 09:13:39,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334946752] [2020-12-22 09:13:39,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:39,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:13:39,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302277112] [2020-12-22 09:13:39,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:13:39,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:13:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:13:39,163 INFO L87 Difference]: Start difference. First operand 38400 states and 64277 transitions. Second operand 4 states. [2020-12-22 09:13:43,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:43,941 INFO L93 Difference]: Finished difference Result 107018 states and 180100 transitions. [2020-12-22 09:13:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:43,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 394 [2020-12-22 09:13:43,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:44,107 INFO L225 Difference]: With dead ends: 107018 [2020-12-22 09:13:44,108 INFO L226 Difference]: Without dead ends: 77240 [2020-12-22 09:13:44,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:13:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77240 states. [2020-12-22 09:13:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77240 to 69512. [2020-12-22 09:13:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69512 states. [2020-12-22 09:13:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69512 states to 69512 states and 116523 transitions. [2020-12-22 09:13:48,797 INFO L78 Accepts]: Start accepts. Automaton has 69512 states and 116523 transitions. Word has length 394 [2020-12-22 09:13:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:48,798 INFO L481 AbstractCegarLoop]: Abstraction has 69512 states and 116523 transitions. [2020-12-22 09:13:48,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:13:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 69512 states and 116523 transitions. [2020-12-22 09:13:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 09:13:48,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:48,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:13:48,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:13:48,821 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash -391853053, now seen corresponding path program 1 times [2020-12-22 09:13:48,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:48,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430162020] [2020-12-22 09:13:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:49,642 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 09:13:49,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430162020] [2020-12-22 09:13:49,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:49,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:49,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959560912] [2020-12-22 09:13:49,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:49,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:49,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:49,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:49,646 INFO L87 Difference]: Start difference. First operand 69512 states and 116523 transitions. Second operand 7 states. [2020-12-22 09:13:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:57,479 INFO L93 Difference]: Finished difference Result 122024 states and 205367 transitions. [2020-12-22 09:13:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:13:57,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 394 [2020-12-22 09:13:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:57,707 INFO L225 Difference]: With dead ends: 122024 [2020-12-22 09:13:57,707 INFO L226 Difference]: Without dead ends: 114578 [2020-12-22 09:13:57,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:13:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114578 states. [2020-12-22 09:14:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114578 to 77376. [2020-12-22 09:14:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77376 states. [2020-12-22 09:14:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77376 states to 77376 states and 129783 transitions. [2020-12-22 09:14:03,411 INFO L78 Accepts]: Start accepts. Automaton has 77376 states and 129783 transitions. Word has length 394 [2020-12-22 09:14:03,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:03,412 INFO L481 AbstractCegarLoop]: Abstraction has 77376 states and 129783 transitions. [2020-12-22 09:14:03,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 77376 states and 129783 transitions. [2020-12-22 09:14:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-12-22 09:14:03,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:03,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:03,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:14:03,429 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:03,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:03,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1950522580, now seen corresponding path program 1 times [2020-12-22 09:14:03,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:03,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104906293] [2020-12-22 09:14:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:03,760 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 09:14:03,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104906293] [2020-12-22 09:14:03,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:03,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:03,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428143150] [2020-12-22 09:14:03,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:03,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:03,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:03,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:03,763 INFO L87 Difference]: Start difference. First operand 77376 states and 129783 transitions. Second operand 3 states. [2020-12-22 09:14:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:13,885 INFO L93 Difference]: Finished difference Result 230515 states and 386627 transitions. [2020-12-22 09:14:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:13,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 395 [2020-12-22 09:14:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:14,145 INFO L225 Difference]: With dead ends: 230515 [2020-12-22 09:14:14,146 INFO L226 Difference]: Without dead ends: 153244 [2020-12-22 09:14:14,354 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 09:14:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153244 states. [2020-12-22 09:14:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153244 to 153242. [2020-12-22 09:14:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153242 states. [2020-12-22 09:14:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153242 states to 153242 states and 256562 transitions. [2020-12-22 09:14:25,443 INFO L78 Accepts]: Start accepts. Automaton has 153242 states and 256562 transitions. Word has length 395 [2020-12-22 09:14:25,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:25,443 INFO L481 AbstractCegarLoop]: Abstraction has 153242 states and 256562 transitions. [2020-12-22 09:14:25,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:25,443 INFO L276 IsEmpty]: Start isEmpty. Operand 153242 states and 256562 transitions. [2020-12-22 09:14:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-12-22 09:14:25,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:25,478 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:14:25,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:14:25,479 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:25,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:25,479 INFO L82 PathProgramCache]: Analyzing trace with hash 663876598, now seen corresponding path program 1 times [2020-12-22 09:14:25,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:25,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887516936] [2020-12-22 09:14:25,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:26,169 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 09:14:26,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887516936] [2020-12-22 09:14:26,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:26,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:26,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551905048] [2020-12-22 09:14:26,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:26,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:26,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:26,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:26,177 INFO L87 Difference]: Start difference. First operand 153242 states and 256562 transitions. Second operand 3 states. [2020-12-22 09:14:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:46,652 INFO L93 Difference]: Finished difference Result 454065 states and 760393 transitions. [2020-12-22 09:14:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:46,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 395 [2020-12-22 09:14:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:47,372 INFO L225 Difference]: With dead ends: 454065 [2020-12-22 09:14:47,373 INFO L226 Difference]: Without dead ends: 300964 [2020-12-22 09:14:47,548 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 09:14:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300964 states.