/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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:12:36,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:12:36,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:12:36,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:12:36,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:12:36,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:12:36,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:12:36,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:12:36,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:12:36,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:12:36,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:12:36,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:12:36,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:12:36,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:12:36,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:12:36,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:12:36,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:12:36,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:12:36,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:12:36,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:12:36,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:12:36,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:12:36,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:12:36,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:12:36,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:12:36,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:12:36,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:12:36,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:12:36,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:12:36,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:12:36,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:12:36,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:12:36,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:12:36,326 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:12:36,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:12:36,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:12:36,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:12:36,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:12:36,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:12:36,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:12:36,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:12:36,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:12:36,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:12:36,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:12:36,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:12:36,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:12:36,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:12:36,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:12:36,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:12:36,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:12:36,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:12:36,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:12:36,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:12:36,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:12:36,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:12:36,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:12:36,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:12:36,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:12:36,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:12:36,761 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:12:36,762 INFO L432 ainManager$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+lhb-reducer.c [2020-12-22 09:12:36,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d033fbf/2da306536504491f8d109317a97561de/FLAG5549450d1 [2020-12-22 09:12:37,986 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:12:37,987 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+lhb-reducer.c [2020-12-22 09:12:38,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d033fbf/2da306536504491f8d109317a97561de/FLAG5549450d1 [2020-12-22 09:12:38,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88d033fbf/2da306536504491f8d109317a97561de [2020-12-22 09:12:38,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:12:38,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:12:38,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:12:38,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:12:38,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:12:38,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:12:38" (1/1) ... [2020-12-22 09:12:38,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f1b4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:38, skipping insertion in model container [2020-12-22 09:12:38,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:12:38" (1/1) ... [2020-12-22 09:12:38,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:12:39,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:12:40,247 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+lhb-reducer.c[40266,40279] [2020-12-22 09:12:43,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:12:43,993 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:12:44,365 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+lhb-reducer.c[40266,40279] [2020-12-22 09:12:47,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:12:47,314 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:12:47,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47 WrapperNode [2020-12-22 09:12:47,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:12:47,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:12:47,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:12:47,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:12:47,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:47,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:47,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:12:47,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:12:47,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:12:47,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:12:47,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:47,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:47,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:47,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:48,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:48,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:48,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (1/1) ... [2020-12-22 09:12:48,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:12:48,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:12:48,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:12:48,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:12:48,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (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 09:12:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:12:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:12:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:12:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:13:04,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:13:04,915 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:13:04,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:04 BoogieIcfgContainer [2020-12-22 09:13:04,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:13:04,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:13:04,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:13:04,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:13:04,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:12:38" (1/3) ... [2020-12-22 09:13:04,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6bc495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:04, skipping insertion in model container [2020-12-22 09:13:04,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:12:47" (2/3) ... [2020-12-22 09:13:04,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6bc495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:13:04, skipping insertion in model container [2020-12-22 09:13:04,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:13:04" (3/3) ... [2020-12-22 09:13:04,935 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-12-22 09:13:04,942 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:13:04,952 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:13:04,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:13:05,029 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:13:05,029 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:13:05,029 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:13:05,030 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:13:05,030 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:13:05,030 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:13:05,030 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:13:05,030 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:13:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states. [2020-12-22 09:13:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:05,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:05,380 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] [2020-12-22 09:13:05,381 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:05,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:05,391 INFO L82 PathProgramCache]: Analyzing trace with hash 579486765, now seen corresponding path program 1 times [2020-12-22 09:13:05,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:05,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707080110] [2020-12-22 09:13:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:06,528 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 09:13:06,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707080110] [2020-12-22 09:13:06,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:06,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:06,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287476059] [2020-12-22 09:13:06,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:06,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:06,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:06,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:06,558 INFO L87 Difference]: Start difference. First operand 6849 states. Second operand 3 states. [2020-12-22 09:13:07,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:07,212 INFO L93 Difference]: Finished difference Result 13635 states and 23632 transitions. [2020-12-22 09:13:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:07,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:07,302 INFO L225 Difference]: With dead ends: 13635 [2020-12-22 09:13:07,302 INFO L226 Difference]: Without dead ends: 8146 [2020-12-22 09:13:07,326 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 09:13:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2020-12-22 09:13:07,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8144. [2020-12-22 09:13:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8144 states. [2020-12-22 09:13:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 13632 transitions. [2020-12-22 09:13:07,757 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 13632 transitions. Word has length 388 [2020-12-22 09:13:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:07,763 INFO L481 AbstractCegarLoop]: Abstraction has 8144 states and 13632 transitions. [2020-12-22 09:13:07,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 13632 transitions. [2020-12-22 09:13:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:07,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:07,797 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] [2020-12-22 09:13:07,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:13:07,799 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:07,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:07,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2020212822, now seen corresponding path program 1 times [2020-12-22 09:13:07,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:07,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885712082] [2020-12-22 09:13:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:08,586 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 09:13:08,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885712082] [2020-12-22 09:13:08,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:08,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:08,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935787095] [2020-12-22 09:13:08,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:08,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:08,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:08,591 INFO L87 Difference]: Start difference. First operand 8144 states and 13632 transitions. Second operand 3 states. [2020-12-22 09:13:10,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:10,012 INFO L93 Difference]: Finished difference Result 17753 states and 29829 transitions. [2020-12-22 09:13:10,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:10,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:10,081 INFO L225 Difference]: With dead ends: 17753 [2020-12-22 09:13:10,081 INFO L226 Difference]: Without dead ends: 10791 [2020-12-22 09:13:10,100 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 09:13:10,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2020-12-22 09:13:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2020-12-22 09:13:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10789 states. [2020-12-22 09:13:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 18037 transitions. [2020-12-22 09:13:10,630 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 18037 transitions. Word has length 388 [2020-12-22 09:13:10,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:10,631 INFO L481 AbstractCegarLoop]: Abstraction has 10789 states and 18037 transitions. [2020-12-22 09:13:10,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 18037 transitions. [2020-12-22 09:13:10,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:10,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:10,668 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] [2020-12-22 09:13:10,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:13:10,669 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash -502292862, now seen corresponding path program 1 times [2020-12-22 09:13:10,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:10,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176691033] [2020-12-22 09:13:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:11,433 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 09:13:11,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176691033] [2020-12-22 09:13:11,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:11,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:11,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706354418] [2020-12-22 09:13:11,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:11,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:11,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:11,436 INFO L87 Difference]: Start difference. First operand 10789 states and 18037 transitions. Second operand 3 states. [2020-12-22 09:13:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:12,417 INFO L93 Difference]: Finished difference Result 19123 states and 32023 transitions. [2020-12-22 09:13:12,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:12,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:12,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:12,509 INFO L225 Difference]: With dead ends: 19123 [2020-12-22 09:13:12,509 INFO L226 Difference]: Without dead ends: 16693 [2020-12-22 09:13:12,523 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 09:13:12,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16693 states. [2020-12-22 09:13:13,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16693 to 16691. [2020-12-22 09:13:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16691 states. [2020-12-22 09:13:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16691 states to 16691 states and 27904 transitions. [2020-12-22 09:13:13,311 INFO L78 Accepts]: Start accepts. Automaton has 16691 states and 27904 transitions. Word has length 388 [2020-12-22 09:13:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:13,320 INFO L481 AbstractCegarLoop]: Abstraction has 16691 states and 27904 transitions. [2020-12-22 09:13:13,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 16691 states and 27904 transitions. [2020-12-22 09:13:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:13,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:13,377 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] [2020-12-22 09:13:13,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:13:13,378 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:13,379 INFO L82 PathProgramCache]: Analyzing trace with hash -913903934, now seen corresponding path program 1 times [2020-12-22 09:13:13,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:13,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730816281] [2020-12-22 09:13:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:13,935 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 09:13:13,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730816281] [2020-12-22 09:13:13,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:13,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:13,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125544950] [2020-12-22 09:13:13,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:13,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:13,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:13,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:13,938 INFO L87 Difference]: Start difference. First operand 16691 states and 27904 transitions. Second operand 3 states. [2020-12-22 09:13:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:16,496 INFO L93 Difference]: Finished difference Result 32018 states and 53524 transitions. [2020-12-22 09:13:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:16,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:16,585 INFO L225 Difference]: With dead ends: 32018 [2020-12-22 09:13:16,586 INFO L226 Difference]: Without dead ends: 28712 [2020-12-22 09:13:16,602 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 09:13:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28712 states. [2020-12-22 09:13:17,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28712 to 28710. [2020-12-22 09:13:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28710 states. [2020-12-22 09:13:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28710 states to 28710 states and 47822 transitions. [2020-12-22 09:13:17,732 INFO L78 Accepts]: Start accepts. Automaton has 28710 states and 47822 transitions. Word has length 388 [2020-12-22 09:13:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:17,733 INFO L481 AbstractCegarLoop]: Abstraction has 28710 states and 47822 transitions. [2020-12-22 09:13:17,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 28710 states and 47822 transitions. [2020-12-22 09:13:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:17,819 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] [2020-12-22 09:13:17,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:13:17,819 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash -644895742, now seen corresponding path program 1 times [2020-12-22 09:13:17,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:17,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735038676] [2020-12-22 09:13:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:18,247 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 09:13:18,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735038676] [2020-12-22 09:13:18,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:18,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:18,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192041919] [2020-12-22 09:13:18,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:18,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:18,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:18,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:18,250 INFO L87 Difference]: Start difference. First operand 28710 states and 47822 transitions. Second operand 3 states. [2020-12-22 09:13:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:19,760 INFO L93 Difference]: Finished difference Result 33258 states and 55366 transitions. [2020-12-22 09:13:19,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:19,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:19,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:19,841 INFO L225 Difference]: With dead ends: 33258 [2020-12-22 09:13:19,842 INFO L226 Difference]: Without dead ends: 30296 [2020-12-22 09:13:19,858 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 09:13:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30296 states. [2020-12-22 09:13:20,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30296 to 30150. [2020-12-22 09:13:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30150 states. [2020-12-22 09:13:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30150 states to 30150 states and 50168 transitions. [2020-12-22 09:13:21,040 INFO L78 Accepts]: Start accepts. Automaton has 30150 states and 50168 transitions. Word has length 388 [2020-12-22 09:13:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:21,041 INFO L481 AbstractCegarLoop]: Abstraction has 30150 states and 50168 transitions. [2020-12-22 09:13:21,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 30150 states and 50168 transitions. [2020-12-22 09:13:21,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:21,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:21,093 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] [2020-12-22 09:13:21,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:13:21,093 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:21,094 INFO L82 PathProgramCache]: Analyzing trace with hash 896866583, now seen corresponding path program 1 times [2020-12-22 09:13:21,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:21,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867836547] [2020-12-22 09:13:21,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:22,118 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 09:13:22,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867836547] [2020-12-22 09:13:22,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:22,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:22,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622089136] [2020-12-22 09:13:22,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:22,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:22,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:22,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:22,121 INFO L87 Difference]: Start difference. First operand 30150 states and 50168 transitions. Second operand 3 states. [2020-12-22 09:13:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:23,778 INFO L93 Difference]: Finished difference Result 73512 states and 122474 transitions. [2020-12-22 09:13:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:23,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:23,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:23,908 INFO L225 Difference]: With dead ends: 73512 [2020-12-22 09:13:23,908 INFO L226 Difference]: Without dead ends: 44978 [2020-12-22 09:13:23,959 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 09:13:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44978 states. [2020-12-22 09:13:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44978 to 43676. [2020-12-22 09:13:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43676 states. [2020-12-22 09:13:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43676 states to 43676 states and 72376 transitions. [2020-12-22 09:13:25,424 INFO L78 Accepts]: Start accepts. Automaton has 43676 states and 72376 transitions. Word has length 388 [2020-12-22 09:13:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:25,425 INFO L481 AbstractCegarLoop]: Abstraction has 43676 states and 72376 transitions. [2020-12-22 09:13:25,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 43676 states and 72376 transitions. [2020-12-22 09:13:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:25,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:25,485 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] [2020-12-22 09:13:25,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:13:25,485 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:25,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1890639942, now seen corresponding path program 1 times [2020-12-22 09:13:25,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:25,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256902419] [2020-12-22 09:13:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:26,409 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 09:13:26,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256902419] [2020-12-22 09:13:26,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:26,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:26,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156590773] [2020-12-22 09:13:26,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:26,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:26,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:26,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:26,416 INFO L87 Difference]: Start difference. First operand 43676 states and 72376 transitions. Second operand 3 states. [2020-12-22 09:13:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:28,505 INFO L93 Difference]: Finished difference Result 110402 states and 183507 transitions. [2020-12-22 09:13:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:28,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:28,721 INFO L225 Difference]: With dead ends: 110402 [2020-12-22 09:13:28,722 INFO L226 Difference]: Without dead ends: 70520 [2020-12-22 09:13:28,974 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 09:13:29,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70520 states. [2020-12-22 09:13:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70520 to 66346. [2020-12-22 09:13:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66346 states. [2020-12-22 09:13:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66346 states to 66346 states and 109153 transitions. [2020-12-22 09:13:31,226 INFO L78 Accepts]: Start accepts. Automaton has 66346 states and 109153 transitions. Word has length 388 [2020-12-22 09:13:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:31,227 INFO L481 AbstractCegarLoop]: Abstraction has 66346 states and 109153 transitions. [2020-12-22 09:13:31,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 66346 states and 109153 transitions. [2020-12-22 09:13:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-12-22 09:13:31,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:31,329 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] [2020-12-22 09:13:31,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:13:31,331 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:31,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1218777864, now seen corresponding path program 1 times [2020-12-22 09:13:31,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:31,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648450935] [2020-12-22 09:13:31,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:32,132 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 09:13:32,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648450935] [2020-12-22 09:13:32,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:32,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:13:32,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692715891] [2020-12-22 09:13:32,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:13:32,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:32,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:13:32,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:13:32,135 INFO L87 Difference]: Start difference. First operand 66346 states and 109153 transitions. Second operand 3 states. [2020-12-22 09:13:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:33,737 INFO L93 Difference]: Finished difference Result 98310 states and 163139 transitions. [2020-12-22 09:13:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:13:33,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 388 [2020-12-22 09:13:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:33,809 INFO L225 Difference]: With dead ends: 98310 [2020-12-22 09:13:33,809 INFO L226 Difference]: Without dead ends: 38164 [2020-12-22 09:13:33,858 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 09:13:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38164 states. [2020-12-22 09:13:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38164 to 34162. [2020-12-22 09:13:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34162 states. [2020-12-22 09:13:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34162 states to 34162 states and 56673 transitions. [2020-12-22 09:13:35,035 INFO L78 Accepts]: Start accepts. Automaton has 34162 states and 56673 transitions. Word has length 388 [2020-12-22 09:13:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:35,036 INFO L481 AbstractCegarLoop]: Abstraction has 34162 states and 56673 transitions. [2020-12-22 09:13:35,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:13:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34162 states and 56673 transitions. [2020-12-22 09:13:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 09:13:35,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:35,073 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 09:13:35,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:13:35,074 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash -365455318, now seen corresponding path program 1 times [2020-12-22 09:13:35,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:35,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349559380] [2020-12-22 09:13:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:35,764 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 09:13:35,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349559380] [2020-12-22 09:13:35,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:35,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:35,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419237216] [2020-12-22 09:13:35,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:35,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:35,768 INFO L87 Difference]: Start difference. First operand 34162 states and 56673 transitions. Second operand 7 states. [2020-12-22 09:13:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:40,240 INFO L93 Difference]: Finished difference Result 116932 states and 195882 transitions. [2020-12-22 09:13:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:13:40,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-12-22 09:13:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:40,645 INFO L225 Difference]: With dead ends: 116932 [2020-12-22 09:13:40,645 INFO L226 Difference]: Without dead ends: 107778 [2020-12-22 09:13:40,684 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 09:13:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107778 states. [2020-12-22 09:13:42,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107778 to 43399. [2020-12-22 09:13:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43399 states. [2020-12-22 09:13:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43399 states to 43399 states and 72054 transitions. [2020-12-22 09:13:43,041 INFO L78 Accepts]: Start accepts. Automaton has 43399 states and 72054 transitions. Word has length 392 [2020-12-22 09:13:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:43,041 INFO L481 AbstractCegarLoop]: Abstraction has 43399 states and 72054 transitions. [2020-12-22 09:13:43,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:13:43,041 INFO L276 IsEmpty]: Start isEmpty. Operand 43399 states and 72054 transitions. [2020-12-22 09:13:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:13:43,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:43,070 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 09:13:43,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:13:43,070 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash 871962965, now seen corresponding path program 1 times [2020-12-22 09:13:43,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:43,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214216517] [2020-12-22 09:13:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:43,587 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 09:13:43,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214216517] [2020-12-22 09:13:43,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:43,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:13:43,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135430416] [2020-12-22 09:13:43,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:13:43,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:43,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:13:43,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:13:43,590 INFO L87 Difference]: Start difference. First operand 43399 states and 72054 transitions. Second operand 4 states. [2020-12-22 09:13:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:46,625 INFO L93 Difference]: Finished difference Result 89101 states and 148857 transitions. [2020-12-22 09:13:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:13:46,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 393 [2020-12-22 09:13:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:46,711 INFO L225 Difference]: With dead ends: 89101 [2020-12-22 09:13:46,712 INFO L226 Difference]: Without dead ends: 70827 [2020-12-22 09:13:46,738 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 09:13:46,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70827 states. [2020-12-22 09:13:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70827 to 61543. [2020-12-22 09:13:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61543 states. [2020-12-22 09:13:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61543 states to 61543 states and 102358 transitions. [2020-12-22 09:13:49,752 INFO L78 Accepts]: Start accepts. Automaton has 61543 states and 102358 transitions. Word has length 393 [2020-12-22 09:13:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:13:49,753 INFO L481 AbstractCegarLoop]: Abstraction has 61543 states and 102358 transitions. [2020-12-22 09:13:49,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:13:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 61543 states and 102358 transitions. [2020-12-22 09:13:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:13:49,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:13:49,783 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 09:13:49,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:13:49,784 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:13:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:13:49,785 INFO L82 PathProgramCache]: Analyzing trace with hash 2131821715, now seen corresponding path program 1 times [2020-12-22 09:13:49,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:13:49,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833300363] [2020-12-22 09:13:49,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:13:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:13:50,450 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 09:13:50,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833300363] [2020-12-22 09:13:50,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:13:50,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:13:50,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728277050] [2020-12-22 09:13:50,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:13:50,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:13:50,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:13:50,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:13:50,454 INFO L87 Difference]: Start difference. First operand 61543 states and 102358 transitions. Second operand 7 states. [2020-12-22 09:13:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:13:56,333 INFO L93 Difference]: Finished difference Result 143731 states and 240476 transitions. [2020-12-22 09:13:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:13:56,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-12-22 09:13:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:13:56,521 INFO L225 Difference]: With dead ends: 143731 [2020-12-22 09:13:56,522 INFO L226 Difference]: Without dead ends: 125489 [2020-12-22 09:13:56,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:13:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125489 states. [2020-12-22 09:14:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125489 to 79719. [2020-12-22 09:14:00,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79719 states. [2020-12-22 09:14:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79719 states to 79719 states and 132822 transitions. [2020-12-22 09:14:00,822 INFO L78 Accepts]: Start accepts. Automaton has 79719 states and 132822 transitions. Word has length 393 [2020-12-22 09:14:00,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:00,823 INFO L481 AbstractCegarLoop]: Abstraction has 79719 states and 132822 transitions. [2020-12-22 09:14:00,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:00,823 INFO L276 IsEmpty]: Start isEmpty. Operand 79719 states and 132822 transitions. [2020-12-22 09:14:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:14:00,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:00,869 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 09:14:00,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:14:00,869 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:00,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1534638356, now seen corresponding path program 1 times [2020-12-22 09:14:00,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:00,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899914021] [2020-12-22 09:14:00,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:01,825 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 09:14:01,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899914021] [2020-12-22 09:14:01,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:01,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:14:01,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500074702] [2020-12-22 09:14:01,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:01,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:01,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:01,828 INFO L87 Difference]: Start difference. First operand 79719 states and 132822 transitions. Second operand 7 states. [2020-12-22 09:14:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:09,432 INFO L93 Difference]: Finished difference Result 162174 states and 271207 transitions. [2020-12-22 09:14:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:09,433 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-12-22 09:14:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:09,662 INFO L225 Difference]: With dead ends: 162174 [2020-12-22 09:14:09,662 INFO L226 Difference]: Without dead ends: 143932 [2020-12-22 09:14:09,704 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 09:14:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143932 states. [2020-12-22 09:14:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143932 to 97956. [2020-12-22 09:14:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97956 states. [2020-12-22 09:14:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97956 states to 97956 states and 163347 transitions. [2020-12-22 09:14:15,619 INFO L78 Accepts]: Start accepts. Automaton has 97956 states and 163347 transitions. Word has length 393 [2020-12-22 09:14:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:15,620 INFO L481 AbstractCegarLoop]: Abstraction has 97956 states and 163347 transitions. [2020-12-22 09:14:15,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 97956 states and 163347 transitions. [2020-12-22 09:14:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:14:15,649 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:15,649 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 09:14:15,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:14:15,650 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:15,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:15,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1647138668, now seen corresponding path program 1 times [2020-12-22 09:14:15,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:15,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802523147] [2020-12-22 09:14:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:16,638 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 09:14:16,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802523147] [2020-12-22 09:14:16,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:16,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 09:14:16,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514837611] [2020-12-22 09:14:16,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 09:14:16,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:16,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 09:14:16,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:14:16,640 INFO L87 Difference]: Start difference. First operand 97956 states and 163347 transitions. Second operand 7 states. [2020-12-22 09:14:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:26,413 INFO L93 Difference]: Finished difference Result 180382 states and 301703 transitions. [2020-12-22 09:14:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:14:26,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-12-22 09:14:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:26,842 INFO L225 Difference]: With dead ends: 180382 [2020-12-22 09:14:26,842 INFO L226 Difference]: Without dead ends: 162140 [2020-12-22 09:14:26,894 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 09:14:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162140 states. [2020-12-22 09:14:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162140 to 116181. [2020-12-22 09:14:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116181 states. [2020-12-22 09:14:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116181 states to 116181 states and 193860 transitions. [2020-12-22 09:14:34,371 INFO L78 Accepts]: Start accepts. Automaton has 116181 states and 193860 transitions. Word has length 393 [2020-12-22 09:14:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:34,386 INFO L481 AbstractCegarLoop]: Abstraction has 116181 states and 193860 transitions. [2020-12-22 09:14:34,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 09:14:34,387 INFO L276 IsEmpty]: Start isEmpty. Operand 116181 states and 193860 transitions. [2020-12-22 09:14:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:14:34,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:34,440 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 09:14:34,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:14:34,440 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:34,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:34,441 INFO L82 PathProgramCache]: Analyzing trace with hash 252404365, now seen corresponding path program 1 times [2020-12-22 09:14:34,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:34,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657183366] [2020-12-22 09:14:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:35,156 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 09:14:35,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657183366] [2020-12-22 09:14:35,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:35,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:35,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887019550] [2020-12-22 09:14:35,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:35,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:35,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:35,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:35,166 INFO L87 Difference]: Start difference. First operand 116181 states and 193860 transitions. Second operand 3 states. [2020-12-22 09:14:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:14:42,142 INFO L93 Difference]: Finished difference Result 228872 states and 382163 transitions. [2020-12-22 09:14:42,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:14:42,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 393 [2020-12-22 09:14:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:14:42,345 INFO L225 Difference]: With dead ends: 228872 [2020-12-22 09:14:42,346 INFO L226 Difference]: Without dead ends: 116183 [2020-12-22 09:14:42,430 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 09:14:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116183 states. [2020-12-22 09:14:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116183 to 116181. [2020-12-22 09:14:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116181 states. [2020-12-22 09:14:49,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116181 states to 116181 states and 193443 transitions. [2020-12-22 09:14:49,804 INFO L78 Accepts]: Start accepts. Automaton has 116181 states and 193443 transitions. Word has length 393 [2020-12-22 09:14:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:14:49,804 INFO L481 AbstractCegarLoop]: Abstraction has 116181 states and 193443 transitions. [2020-12-22 09:14:49,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:14:49,804 INFO L276 IsEmpty]: Start isEmpty. Operand 116181 states and 193443 transitions. [2020-12-22 09:14:49,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:14:49,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:14:49,835 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 09:14:49,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:14:49,835 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:14:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:14:49,836 INFO L82 PathProgramCache]: Analyzing trace with hash 487567825, now seen corresponding path program 1 times [2020-12-22 09:14:49,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:14:49,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392927425] [2020-12-22 09:14:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:14:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:14:50,456 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 09:14:50,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392927425] [2020-12-22 09:14:50,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:14:50,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:14:50,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83382889] [2020-12-22 09:14:50,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:14:50,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:14:50,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:14:50,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:14:50,461 INFO L87 Difference]: Start difference. First operand 116181 states and 193443 transitions. Second operand 3 states. [2020-12-22 09:15:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:02,149 INFO L93 Difference]: Finished difference Result 316585 states and 527399 transitions. [2020-12-22 09:15:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:02,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 393 [2020-12-22 09:15:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:02,533 INFO L225 Difference]: With dead ends: 316585 [2020-12-22 09:15:02,534 INFO L226 Difference]: Without dead ends: 201856 [2020-12-22 09:15:02,643 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 09:15:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201856 states. [2020-12-22 09:15:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201856 to 193842. [2020-12-22 09:15:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193842 states. [2020-12-22 09:15:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193842 states to 193842 states and 320950 transitions. [2020-12-22 09:15:17,466 INFO L78 Accepts]: Start accepts. Automaton has 193842 states and 320950 transitions. Word has length 393 [2020-12-22 09:15:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:17,467 INFO L481 AbstractCegarLoop]: Abstraction has 193842 states and 320950 transitions. [2020-12-22 09:15:17,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:17,470 INFO L276 IsEmpty]: Start isEmpty. Operand 193842 states and 320950 transitions. [2020-12-22 09:15:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:15:17,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:17,519 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 09:15:17,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:15:17,520 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:17,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1103767798, now seen corresponding path program 1 times [2020-12-22 09:15:17,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:17,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096709042] [2020-12-22 09:15:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:18,380 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 09:15:18,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096709042] [2020-12-22 09:15:18,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:18,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:15:18,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714125054] [2020-12-22 09:15:18,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:15:18,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:18,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:15:18,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:15:18,383 INFO L87 Difference]: Start difference. First operand 193842 states and 320950 transitions. Second operand 3 states. [2020-12-22 09:15:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:15:25,301 INFO L93 Difference]: Finished difference Result 288474 states and 478332 transitions. [2020-12-22 09:15:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:15:25,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 393 [2020-12-22 09:15:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:15:25,489 INFO L225 Difference]: With dead ends: 288474 [2020-12-22 09:15:25,489 INFO L226 Difference]: Without dead ends: 101306 [2020-12-22 09:15:25,622 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 09:15:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101306 states. [2020-12-22 09:15:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101306 to 101304. [2020-12-22 09:15:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101304 states. [2020-12-22 09:15:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101304 states to 101304 states and 167392 transitions. [2020-12-22 09:15:32,357 INFO L78 Accepts]: Start accepts. Automaton has 101304 states and 167392 transitions. Word has length 393 [2020-12-22 09:15:32,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:15:32,358 INFO L481 AbstractCegarLoop]: Abstraction has 101304 states and 167392 transitions. [2020-12-22 09:15:32,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:15:32,358 INFO L276 IsEmpty]: Start isEmpty. Operand 101304 states and 167392 transitions. [2020-12-22 09:15:32,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-12-22 09:15:32,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:15:32,383 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 09:15:32,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:15:32,383 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:15:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:15:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1375229711, now seen corresponding path program 1 times [2020-12-22 09:15:32,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:15:32,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932750763] [2020-12-22 09:15:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:15:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:15:33,847 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 09:15:33,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932750763] [2020-12-22 09:15:33,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:15:33,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:15:33,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340234754] [2020-12-22 09:15:33,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:15:33,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:15:33,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:15:33,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:15:33,851 INFO L87 Difference]: Start difference. First operand 101304 states and 167392 transitions. Second operand 8 states. [2020-12-22 09:16:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:16:00,366 INFO L93 Difference]: Finished difference Result 398230 states and 657637 transitions. [2020-12-22 09:16:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 09:16:00,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 393 [2020-12-22 09:16:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:16:00,992 INFO L225 Difference]: With dead ends: 398230 [2020-12-22 09:16:00,992 INFO L226 Difference]: Without dead ends: 341208 [2020-12-22 09:16:01,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:16:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341208 states.